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March 10, 2020 Zimmerman/Batchelor podcast
ExoMars2020 rover delayed until 2022
The European Space Agency (ESA) today announced that they are delaying the launch of their ExoMars2020 rover mission until the next launch window in 2022
The press release says this will give them the time “necessary to make all components of the spacecraft fit for the Mars adventure.” Considering that the spacecraft’s parachutes have yet to have a successful high altitude test, that the entire spacecraft is not yet assembled, and that when they did the first thermal test of the rover the glue for the solar panel hinges failed, this seems that they need to do a lot of testing.
Overall the decision is smart. Better to give them the time to get this right then launch on time and have a failure.
At the same time, there appears to be something fundamentally wrong within the management of this project at ESA. This project was first proposed in 2001, and has gone through repeated restructurings and redesigns. Moreover, they began planning the rover for this 2020 launch in 2011, and after ten years were not ready for launch.
The European Space Agency (ESA) today announced that they are delaying the launch of their ExoMars2020 rover mission until the next launch window in 2022
The press release says this will give them the time “necessary to make all components of the spacecraft fit for the Mars adventure.” Considering that the spacecraft’s parachutes have yet to have a successful high altitude test, that the entire spacecraft is not yet assembled, and that when they did the first thermal test of the rover the glue for the solar panel hinges failed, this seems that they need to do a lot of testing.
Overall the decision is smart. Better to give them the time to get this right then launch on time and have a failure.
At the same time, there appears to be something fundamentally wrong within the management of this project at ESA. This project was first proposed in 2001, and has gone through repeated restructurings and redesigns. Moreover, they began planning the rover for this 2020 launch in 2011, and after ten years were not ready for launch.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon, any other book seller, or direct from my ebook publisher, ebookit. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Crosby, Stills, Nash, and Young – Our House
An evening pause: A hit in 1970, this song to me was one of the nicest songs from that time, and in many ways signaled the end of the 1960s.
Hat tip Diane Zimmerman.
House about to renew FISA with only cosmetic changes
The fix is in: The House is about to vote on a renewal of the Foreign Intelligence Surveillance Act (FISA), incorporating what appear to be only cosmetic changes to the law.
The deal reached by House leaders would require officers overseeing FISA applications to certify that the Justice Department has been fully informed of any issues with the accuracy of the application, and require that agencies submitting applications appoint officers to ensure the applications are compliant with the law.
The bill also includes measures to assuage concerns by Democrats and libertarians worried about government overreach in surveilling of American citizens, such as ending the National Security Agency’s to collect call detail records. It also includes measures to increase transparency, requiring the Justice Department to publish reports explaining its positions on how information is derived for FISA applications.
These are changes desired by the Democrats in the House. Or to put it another way, they are working hard to renew a law that I would call “The Law to Enable Democrats and their Allies in the Justice Department, FBI, and CIA to spy on Republicans”.
This law should expire. Trump should veto any renewal effort, no matter who writes it. It is unconstitutional., has done nothing to protect us, even as it is has been abused to violate our constitutional rights.
And even if it could be argued that the law provided the country some added security that would be lost if it expires, freedom is more important.
UPDATE: The House has passed the bill, which Senator Rand Paul (R-Kentucky) condemned as “weak sauce.”
“The ‘Deal’ on FISA is weak sauce diluted [and] made impotent by A.G. Barr. None of the reforms prevent secret FISA court from abusing the rights of Americans. None of the reforms prevent a President of either party from a politically motivated investigation. Big Disappointment!” Paul tweeted early Tuesday evening.
Paul and Sen. Mike Lee (R-Utah), who have both vocally called for sweeping reforms to FISA, are urging President Trump to veto the bill if it arrives at his desk.
Barr was first pushing for passage of a renewal that would have changed nothing in the law, making me think that his so-called investigations into the FISA corruption are probably hogwash. He might make noises about upholding the law, but so far what he has done makes him appear a willing partner in the Washington corrupt culture, working to keep the status quo.
The fix is in: The House is about to vote on a renewal of the Foreign Intelligence Surveillance Act (FISA), incorporating what appear to be only cosmetic changes to the law.
The deal reached by House leaders would require officers overseeing FISA applications to certify that the Justice Department has been fully informed of any issues with the accuracy of the application, and require that agencies submitting applications appoint officers to ensure the applications are compliant with the law.
The bill also includes measures to assuage concerns by Democrats and libertarians worried about government overreach in surveilling of American citizens, such as ending the National Security Agency’s to collect call detail records. It also includes measures to increase transparency, requiring the Justice Department to publish reports explaining its positions on how information is derived for FISA applications.
These are changes desired by the Democrats in the House. Or to put it another way, they are working hard to renew a law that I would call “The Law to Enable Democrats and their Allies in the Justice Department, FBI, and CIA to spy on Republicans”.
This law should expire. Trump should veto any renewal effort, no matter who writes it. It is unconstitutional., has done nothing to protect us, even as it is has been abused to violate our constitutional rights.
And even if it could be argued that the law provided the country some added security that would be lost if it expires, freedom is more important.
UPDATE: The House has passed the bill, which Senator Rand Paul (R-Kentucky) condemned as “weak sauce.”
“The ‘Deal’ on FISA is weak sauce diluted [and] made impotent by A.G. Barr. None of the reforms prevent secret FISA court from abusing the rights of Americans. None of the reforms prevent a President of either party from a politically motivated investigation. Big Disappointment!” Paul tweeted early Tuesday evening.
Paul and Sen. Mike Lee (R-Utah), who have both vocally called for sweeping reforms to FISA, are urging President Trump to veto the bill if it arrives at his desk.
Barr was first pushing for passage of a renewal that would have changed nothing in the law, making me think that his so-called investigations into the FISA corruption are probably hogwash. He might make noises about upholding the law, but so far what he has done makes him appear a willing partner in the Washington corrupt culture, working to keep the status quo.
Now available in hardback and paperback as well as ebook!
From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.
Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space, is a riveting page-turning story that documents how slavery slowly became pervasive in the southern British colonies of North America, colonies founded by a people and culture that not only did not allow slavery but in every way were hostile to the practice.
Conscious Choice does more however. In telling the tragic history of the Virginia colony and the rise of slavery there, Zimmerman lays out the proper path for creating healthy societies in places like the Moon and Mars.
“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of the Mars Society.
All editions are available at Amazon, Barnes & Noble, and all book vendors, with the ebook priced at $5.99 before discount. All editions can also be purchased direct from the ebook publisher, ebookit, in which case you don't support the big tech companies and the author gets a bigger cut much sooner.
Autographed printed copies are also available at discount directly from the author (hardback $29.95; paperback $14.95; Shipping cost for either: $6.00). Just send an email to zimmerman @ nasw dot org.
Big budget cut for India’s manned space program
India’s manned space program has received a 70% cut in funding in that country’s most recent budget, according to one news story from India.
From the first link:
The human spaceflight program of the Indian Space Research Organisation (ISRO), called Gaganyaan, received only about 30% of the funds sought by the according to the Times of India. ISRO said it will find a way around the low budget, but details were not provided in the news report.
The plan has been to launch a unmanned mission late this year or early next year, with the 5-to-7-day manned mission to occur one year later.
Based on the article from India, it appears to me that these cuts are part of the negotiation process for determining ISRO’s budget, and are not yet firm. It also appears that the government is experiencing sticker shock. It wants a manned mission, but when it was told what it would cost it balked.
I suspect that it is highly unlikely that they will be able to fly the manned mission by 2022 with these cuts. The Modi government will either have to decide to spend the money, or significantly delay its human spaceflight effort.
India’s manned space program has received a 70% cut in funding in that country’s most recent budget, according to one news story from India.
From the first link:
The human spaceflight program of the Indian Space Research Organisation (ISRO), called Gaganyaan, received only about 30% of the funds sought by the according to the Times of India. ISRO said it will find a way around the low budget, but details were not provided in the news report.
The plan has been to launch a unmanned mission late this year or early next year, with the 5-to-7-day manned mission to occur one year later.
Based on the article from India, it appears to me that these cuts are part of the negotiation process for determining ISRO’s budget, and are not yet firm. It also appears that the government is experiencing sticker shock. It wants a manned mission, but when it was told what it would cost it balked.
I suspect that it is highly unlikely that they will be able to fly the manned mission by 2022 with these cuts. The Modi government will either have to decide to spend the money, or significantly delay its human spaceflight effort.
Russia delays first 2020 Proton launch due to “component mismatch”
Russian officials yesterday announced that they are delaying the first Proton launch in 2020 from March to May in order to replace components that during tests were found to be “mismatched.”
According to [Khrunichev Space Center Director General Alexei] Varochko, quality control tests revealed mismatch of one of the components’ parameters. “In order to ensure proper serviceability and guarantee the implementation of the Khrunichev Center’s liabilities, it was decided to replace the components set, including in the Proton-M carrier rocket, which is kept at the Baikonur space center, to put Express satellites into orbit,” he said.
Nor are they having issues only with their Proton rocket. Two days ago they announced a one month delay of a Soyuz rocket, set for launch for Arianespace, because of “an off-nominal malfunction … on a circuit board” in the Freget-M upper stage. Rather than replace the component, they have decided to replace the entire stage
Proton is built by the Khrunichev facility. Freget-M is built by the Lavochkin facility. For both to have issues like this suggests once again that Russia’s aerospace industry continues to have serious quality control problems in its manufacturing processes. The one bright spot is that they are at least finding out about the problems prior to launch.
Russian officials yesterday announced that they are delaying the first Proton launch in 2020 from March to May in order to replace components that during tests were found to be “mismatched.”
According to [Khrunichev Space Center Director General Alexei] Varochko, quality control tests revealed mismatch of one of the components’ parameters. “In order to ensure proper serviceability and guarantee the implementation of the Khrunichev Center’s liabilities, it was decided to replace the components set, including in the Proton-M carrier rocket, which is kept at the Baikonur space center, to put Express satellites into orbit,” he said.
Nor are they having issues only with their Proton rocket. Two days ago they announced a one month delay of a Soyuz rocket, set for launch for Arianespace, because of “an off-nominal malfunction … on a circuit board” in the Freget-M upper stage. Rather than replace the component, they have decided to replace the entire stage
Proton is built by the Khrunichev facility. Freget-M is built by the Lavochkin facility. For both to have issues like this suggests once again that Russia’s aerospace industry continues to have serious quality control problems in its manufacturing processes. The one bright spot is that they are at least finding out about the problems prior to launch.
Leaving Earth: Space Stations, Rival Superpowers, and the Quest for Interplanetary Travel, can be purchased as an ebook everywhere for only $3.99 (before discount) at amazon, Barnes & Noble, all ebook vendors, or direct from my ebook publisher, ebookit.
If you buy it from ebookit you don't support the big oppressive tech companies and I get a bigger cut much sooner.
Winner of the 2003 Eugene M. Emme Award of the American Astronautical Society.
"Leaving Earth is one of the best and certainly the most comprehensive summary of our drive into space that I have ever read. It will be invaluable to future scholars because it will tell them how the next chapter of human history opened." -- Arthur C. Clarke
Hans Davis – Shadow Act
Martian dust devil tracks come and go
Click for full image.
Click for full image.
Cool image time! To understand what created the vastly strange and alien Martian surface, it will be necessary for scientists to monitor that surface closely for decades, if not centuries. To the right is one small example. Taken by the high resolution camera of Mars Reconnaissance Orbiter (MRO) and rotated, cropped, and reduced to post here, it shows a dune field inside a crater in the southern cratered highlands of Mars. Craters have been found to be great traps for dust and sand on Mars. Once the material is blown inside, the winds are not strong enough to lift the material out above the surrounding rims. Thus you often get giant dunes inside craters, as we see here.
What makes this location of interest to planetary scientists is the changing surface of these dunes. They have been monitoring the location since 2009. In 2013, the MRO science team released a captioned photograph, the second image to the right, also rotated, cropped, and reduced by me to match the same area in the top image. In that caption planetary scientist Corwin Atwood-Stone of the Lunar and Planetary Laboratory in Arizona wrote,
This area was previously imaged in August 2009, about two Mars years ago, and in that image dust devil tracks were also visible. However the tracks visible now are completely different from the earlier ones. This tells us that there has been at least one dust storm since then to erase the old tracks, and lots of dust devil activity to create the new ones.
Since then the MRO science team has taken repeated images of this location to monitor how the dust devil tracks change, as well as monitor possible changes to the dunes themselves, including avalanches. The newest image above shows the result of the global dust storm last year. It wiped out the dust devil tracks entirely.
The newer image was entitled, “Monitor Dune Avalanche Slopes,” but I couldn’t find any examples. Based on published research, I am sure there is something there, even if I couldn’t find them. Maybe my readers have a better eye than I.
Click for full image.
Click for full image.
Cool image time! To understand what created the vastly strange and alien Martian surface, it will be necessary for scientists to monitor that surface closely for decades, if not centuries. To the right is one small example. Taken by the high resolution camera of Mars Reconnaissance Orbiter (MRO) and rotated, cropped, and reduced to post here, it shows a dune field inside a crater in the southern cratered highlands of Mars. Craters have been found to be great traps for dust and sand on Mars. Once the material is blown inside, the winds are not strong enough to lift the material out above the surrounding rims. Thus you often get giant dunes inside craters, as we see here.
What makes this location of interest to planetary scientists is the changing surface of these dunes. They have been monitoring the location since 2009. In 2013, the MRO science team released a captioned photograph, the second image to the right, also rotated, cropped, and reduced by me to match the same area in the top image. In that caption planetary scientist Corwin Atwood-Stone of the Lunar and Planetary Laboratory in Arizona wrote,
This area was previously imaged in August 2009, about two Mars years ago, and in that image dust devil tracks were also visible. However the tracks visible now are completely different from the earlier ones. This tells us that there has been at least one dust storm since then to erase the old tracks, and lots of dust devil activity to create the new ones.
Since then the MRO science team has taken repeated images of this location to monitor how the dust devil tracks change, as well as monitor possible changes to the dunes themselves, including avalanches. The newest image above shows the result of the global dust storm last year. It wiped out the dust devil tracks entirely.
The newer image was entitled, “Monitor Dune Avalanche Slopes,” but I couldn’t find any examples. Based on published research, I am sure there is something there, even if I couldn’t find them. Maybe my readers have a better eye than I.
Astronomers more precisely estimate the diameter of neutron stars
Using several different techniques, astronomers now estimate that the typical neutron star will have a diameter of 11 kilometers, or about 7 miles.
What is significant about this new estimate is that if that neutron star happens to be orbiting a black hole and get pulled into it, it will be swallowed whole instead of being ripped apart.
Their results, which appeared in Nature Astronomy today, are more stringent by a factor of two than previous limits and show that a typical neutron star has a radius close to 11 kilometers. They also find that neutron stars merging with black holes are in most cases likely to be swallowed whole, unless the black hole is small and/or rapidly rotating. This means that while such mergers might be observable as gravitational-wave sources, they would be invisible in the electromagnetic spectrum.
In other words, such cataclysmic events would be largely invisible to observers.
Using several different techniques, astronomers now estimate that the typical neutron star will have a diameter of 11 kilometers, or about 7 miles.
What is significant about this new estimate is that if that neutron star happens to be orbiting a black hole and get pulled into it, it will be swallowed whole instead of being ripped apart.
Their results, which appeared in Nature Astronomy today, are more stringent by a factor of two than previous limits and show that a typical neutron star has a radius close to 11 kilometers. They also find that neutron stars merging with black holes are in most cases likely to be swallowed whole, unless the black hole is small and/or rapidly rotating. This means that while such mergers might be observable as gravitational-wave sources, they would be invisible in the electromagnetic spectrum.
In other words, such cataclysmic events would be largely invisible to observers.
New inspector general report slams NASA’s SLS management
A new report [pdf] by NASA’s inspector general released today harshly slams the management of NASA for the never-ending cost overruns and scheduling delays that have plagued the agency’s effort to build and launch the Space Launch System (SLS).
From the report’s introduction:
Based on our review of SLS Program cost reporting, we found that the Program exceeded its Agency Baseline Commitment (ABC)—that is, the cost and schedule baselines committed to Congress against which a program is measured—by at least 33 percent at the end of fiscal year 2019, a figure that could reach 43 percent or higher if additional delays push the launch date for Artemis I beyond November 2020.
… [T]he SLS Program now projects the Artemis I launch will be delayed to at least spring 2021 or later. Further, we found NASA’s ABC cost reporting only tracks Artemis I-related activities and not total SLS Program costs. Overall, by the end of fiscal year 2020, NASA will have spent more than $17 billion on the SLS Program—including almost $6 billion not tracked or reported as part of the ABC.
The graph below, taken from page 45 of the report, illustrates the management failures here quite starkly.
» Read more
The last cargo Dragon to berth with ISS using robot arm
Astronauts yesterday used the robot arm on ISS to berth SpaceX’s cargo Dragon freighter, the last time a Dragon capsule will be berthed to the station in this manner.
The successful supply deliver marked the 20th time a SpaceX Dragon cargo capsule has arrived at the space station since May 2012. The mission, known as CRS-20 or SpaceX-20, also the final flight of SpaceX’s first-generation Dragon spacecraft, which the company is retiring in favor of a new Dragon capsule designed to dock directly with the space station without needing to be captured by the robotic arm.
I could put this another way that is more embarrassing to NASA. After twenty flights, the agency has finally admitted that SpaceX can design a spacecraft that can do automatic dockings, and is now willing to allow it.
That of course is a gross simplification. Nonetheless, the successful unmanned demo flight last year of SpaceX’s crew Dragon, docking directly with ISS, has proven SpaceX can do it. And since that crew Dragon is essentially the same design for SpaceX’s future cargo Dragons, it makes sense to shift from robot-arm-berthing to direct docking for all future Dragon flights.
Astronauts yesterday used the robot arm on ISS to berth SpaceX’s cargo Dragon freighter, the last time a Dragon capsule will be berthed to the station in this manner.
The successful supply deliver marked the 20th time a SpaceX Dragon cargo capsule has arrived at the space station since May 2012. The mission, known as CRS-20 or SpaceX-20, also the final flight of SpaceX’s first-generation Dragon spacecraft, which the company is retiring in favor of a new Dragon capsule designed to dock directly with the space station without needing to be captured by the robotic arm.
I could put this another way that is more embarrassing to NASA. After twenty flights, the agency has finally admitted that SpaceX can design a spacecraft that can do automatic dockings, and is now willing to allow it.
That of course is a gross simplification. Nonetheless, the successful unmanned demo flight last year of SpaceX’s crew Dragon, docking directly with ISS, has proven SpaceX can do it. And since that crew Dragon is essentially the same design for SpaceX’s future cargo Dragons, it makes sense to shift from robot-arm-berthing to direct docking for all future Dragon flights.
China completes remote communications test of Mars rover
The new colonial movement: Though the report today in China’s state-run press is remarkably vague and lacking in details, it appears that they have successfully completed a remote communications test between their planned Mars rover and their ground control center.
The report also said that this will be the “only” such test before the summer launch of their orbiter/lander/rover to Mars.
China has been exceedingly closed-mouthed about this Mars project. Except for one landing test (which I found far from impressive), they have provided very little information about their progress.
While this does not mean they are having problems, it also does not engender confidence, especially because the launch window is only about four months away.
The new colonial movement: Though the report today in China’s state-run press is remarkably vague and lacking in details, it appears that they have successfully completed a remote communications test between their planned Mars rover and their ground control center.
The report also said that this will be the “only” such test before the summer launch of their orbiter/lander/rover to Mars.
China has been exceedingly closed-mouthed about this Mars project. Except for one landing test (which I found far from impressive), they have provided very little information about their progress.
While this does not mean they are having problems, it also does not engender confidence, especially because the launch window is only about four months away.
SpaceX raises $500 million for Starship, twice the amount planned
Capitalism in space: In a just completed fund-raising round, SpaceX raised twice the investment capital proposed, $500 million instead of $250 million.
These funds are in addition to the $1.33 billion raised previously. And according to the SpaceX official in charge of their Starlink satellite constellation, most of this money is not for Starlink:
While SpaceX expects it will cost about $10 billion or more to build the Starlink network, [vice president Jonathan] Hofeller said the company’s fundraising so far has largely not been directed to the Starlink division, as “we’ve been able to fund the development of Starlink primarily from our internal businesses.” He declared the company is in a “different position” in how it raises funds compared to other companies that are building satellite networks. “That’s why, in general, we’ve been very quiet about what we’re doing because we don’t need to go out and raise money for this particular venture,” Hofeller said.
This means the $1.83 billion raised is almost certainly all for developing Starship/Super Heavy.
Can SpaceX build this new heavy lift completely reusable rocket for that price? Considering that it cost them $500 million to develop Falcon Heavy, and that much of the engineering work from that will be applicable for the new rocket, I am willing to bet that they can.
My prediction is further reinforced by the company’s recent activities testing Starship’s tanks at Boca Chica, Texas. Only two weeks after a test to failure (resulting in some spectacular fireworks), the company has apparently successfully completed new tank tests on the next prototype.
In other words, they blew up a prototype, were able to clean up the mess, redesign what failed, and test it successfully, in only two weeks. To say such a pace would be impossible for NASA and its big space contractors like Boeing is probably the biggest understatement I’ve ever made.
This success should not make anyone think that the challenge of building Starship/Super Heavy will be easy or fast. This effort will be cutting edge engineering that in many ways will be beyond that edge. SpaceX is guaranteed to have further test failures along the way. Their pace, management approach, and track record however shows that the company knows how to deal with such issues, and will thus be able to proceed to completion.
Looking Glass – Brandy (You’re A Fine Girl)
On the radio
I will be doing a half hour live, beginning at 6:05 pm (Central) with Robert Pratt on Pratt on Texas, aired on 790-AM KFYO in Lubbock, 1470-AM KYYW in Abilene, and 1290-AM KWFS in Wichita Falls.
The subject will be the coronavirus, and the insane overreaction to it by many who should know better.
I will be doing a half hour live, beginning at 6:05 pm (Central) with Robert Pratt on Pratt on Texas, aired on 790-AM KFYO in Lubbock, 1470-AM KYYW in Abilene, and 1290-AM KWFS in Wichita Falls.
The subject will be the coronavirus, and the insane overreaction to it by many who should know better.
Martian badlands
Click for full image.
The photo to the right is a small section cropped from an image taken by the high resolution camera on Mars Reconnaissance Orbiter (MRO) on January 2, 2020. It shows the rough, cratered southern highlands dubbed Tyrrhena Terra that lie between the low Isidis Basin to the north and Mars’ deepest basin, Hellas, to the south.
The image was taken not because any specific scientific request, but because MRO was doing spectroscopy over this area and it made sense to also take a photograph. Comparing the photograph with the spectroscopic data allows scientists to better understand that spectroscopy.
The white cross in the map below shows the location of this image. The map itself covers latitudes from 40 degrees north to 55 degrees south.
» Read more
Click for full image.
The photo to the right is a small section cropped from an image taken by the high resolution camera on Mars Reconnaissance Orbiter (MRO) on January 2, 2020. It shows the rough, cratered southern highlands dubbed Tyrrhena Terra that lie between the low Isidis Basin to the north and Mars’ deepest basin, Hellas, to the south.
The image was taken not because any specific scientific request, but because MRO was doing spectroscopy over this area and it made sense to also take a photograph. Comparing the photograph with the spectroscopic data allows scientists to better understand that spectroscopy.
The white cross in the map below shows the location of this image. The map itself covers latitudes from 40 degrees north to 55 degrees south.
» Read more
Earth’s day was half hour shorter 70 million years ago
Using data from an ancient fossil shell, scientists have determined that 70 million years ago the Earth’s day was about 30 minutes shorter, and that a year comprised 372 days.
This result is not a surprise, as scientists have known for a long time that the day has been growing longer as the Moon’s gravity, producing tides, wears away at the Earth’s rotation. This data however is the most precise yet, and will allow scientists to better constrain not only the Earth’s changing rotation over time but the Moon’s orbit. As it slows the Earth’s rotation its own orbit around the Earth gets longer, pushing it farther away.
Using data from an ancient fossil shell, scientists have determined that 70 million years ago the Earth’s day was about 30 minutes shorter, and that a year comprised 372 days.
This result is not a surprise, as scientists have known for a long time that the day has been growing longer as the Moon’s gravity, producing tides, wears away at the Earth’s rotation. This data however is the most precise yet, and will allow scientists to better constrain not only the Earth’s changing rotation over time but the Moon’s orbit. As it slows the Earth’s rotation its own orbit around the Earth gets longer, pushing it farther away.
China launches another GPS-type satellite
China today successfully launched another of its Beidou GPS-type satellites, using its Long March 3B rocket.
I found this data point from the link interesting:
Real-time, stand-alone Beidou horizontal positioning accuracy was classed as better than 6 meters (95 percent) and with a vertical accuracy better than 10 meters (95 percent). …[However, t]he system will be dual-use, based on a civilian service that will provide an accuracy of 10 meters in the user position, 0.2 m/s on the user velocity and 50 nanoseconds in time accuracy; and the military and authorized user’s service, providing higher accuracies.
New commercial GPS units will eventually add the Beidou constellation, and when combined with data from the U.S, Russian, European, and Indian systems, will likely get accuracies even higher.
The leaders in the the 2020 launch race:
5 China
4 SpaceX
2 Arianespace (Europe)
2 Russia
The U.S. still leads China 7 to 5 in the national rankings.
China today successfully launched another of its Beidou GPS-type satellites, using its Long March 3B rocket.
I found this data point from the link interesting:
Real-time, stand-alone Beidou horizontal positioning accuracy was classed as better than 6 meters (95 percent) and with a vertical accuracy better than 10 meters (95 percent). …[However, t]he system will be dual-use, based on a civilian service that will provide an accuracy of 10 meters in the user position, 0.2 m/s on the user velocity and 50 nanoseconds in time accuracy; and the military and authorized user’s service, providing higher accuracies.
New commercial GPS units will eventually add the Beidou constellation, and when combined with data from the U.S, Russian, European, and Indian systems, will likely get accuracies even higher.
The leaders in the the 2020 launch race:
5 China
4 SpaceX
2 Arianespace (Europe)
2 Russia
The U.S. still leads China 7 to 5 in the national rankings.
March 6, 2020 Zimmerman/Batchelor podcast
Thank you!
Readers!
I want to thank everyone who contributed in the past month as part of my now-completed annual February birthday fund-raising drive. This was the best February campaign ever. For my readers to so generously give their hard-earned money for something that I offer for free humbles me greatly. Thank you! I will try to live up to your expectations.
For those who have not yet contributed, you can still do so, by checking out the options as outlined in the tip jar either in the right column (near the top) or at the bottom of the page (on mobile phones).
This thank you announcement will remain at the top of the page for the next week. Scroll down for today’s newest posts.
Curiosity reaches highest point yet on Mars
Click for full resolution version.
Time for some more cool images! The panorama above, cropped and reduced to post here, was assembled from images taken by Curiosity on March 6, 2020 by its left navigation camera, just after it topped the slope and settled on the very rocky plateau of what the scientists have dubbed the Greenheugh Piedmont, the highest point on Mars that Curiosity has so far traveled. It looks north, across Gale Crater to its far rim, about thirty miles away. That rim rises about a mile higher than where Curiosity sits today.
To quote Michelle Minitti, the planetary geologist who wrote the update describing this achievement:
Kudos to our rover drivers for making it up the steep, sandy slope below the “Greenheugh pediment” (visible in the [right] side of the above image) and delivering us to a stretch of geology we had our eyes on even before we landed in Gale crater!
The panorama below is also assembled from photos taken by the left navigation camera, but this time it looks south, across the piedmont toward Mt. Sharp. Its view of the the piedmont’s very very rough terrain I think proves that once the scientists have gathered their data from this point, the rover will descend back down and resume its original route, circling the piedmont to skirt its southern edge where orbital data suggests the going will be smoother.
» Read more
Click for full resolution version.
Time for some more cool images! The panorama above, cropped and reduced to post here, was assembled from images taken by Curiosity on March 6, 2020 by its left navigation camera, just after it topped the slope and settled on the very rocky plateau of what the scientists have dubbed the Greenheugh Piedmont, the highest point on Mars that Curiosity has so far traveled. It looks north, across Gale Crater to its far rim, about thirty miles away. That rim rises about a mile higher than where Curiosity sits today.
To quote Michelle Minitti, the planetary geologist who wrote the update describing this achievement:
Kudos to our rover drivers for making it up the steep, sandy slope below the “Greenheugh pediment” (visible in the [right] side of the above image) and delivering us to a stretch of geology we had our eyes on even before we landed in Gale crater!
The panorama below is also assembled from photos taken by the left navigation camera, but this time it looks south, across the piedmont toward Mt. Sharp. Its view of the the piedmont’s very very rough terrain I think proves that once the scientists have gathered their data from this point, the rover will descend back down and resume its original route, circling the piedmont to skirt its southern edge where orbital data suggests the going will be smoother.
» Read more
SpaceX successfully launches cargo Dragon to ISS
Capitalism in space: SpaceX tonight successfully launched a cargo Dragon freighter to ISS.
This is the third flight for this Dragon capsule. It was also the last flight of the company’s first generation Dragon capsules. The company also successfully landed the first stage, which was on its second flight. This was the fiftieth time they have successfully done this. I have embedded the launch video below the fold.
The leaders in the 2020 launch race:
4 China
4 SpaceX
2 Arianespace (Europe)
2 Russia
The U.S. now leads China 7 to 4 in the national rankings.
» Read more
Capitalism in space: SpaceX tonight successfully launched a cargo Dragon freighter to ISS.
This is the third flight for this Dragon capsule. It was also the last flight of the company’s first generation Dragon capsules. The company also successfully landed the first stage, which was on its second flight. This was the fiftieth time they have successfully done this. I have embedded the launch video below the fold.
The leaders in the 2020 launch race:
4 China
4 SpaceX
2 Arianespace (Europe)
2 Russia
The U.S. now leads China 7 to 4 in the national rankings.
» Read more
What Happens When an 18 Year Old Buys a Mainframe
An evening pause: This is a bit long for an evening pause, and I myself did not understand a good portion of the terminology, but it is still fascinating and worth watching nonetheless, if only to give you hope for the future. As the last questioner at the end said, “I think you’ve raised the bar on what all of us should expect from our kids now.”
Hat tip Diane Wilson.
Rolling boulders on Mars
Click for full image.
Cool image time! The photo to the left, cropped to post here, was taken by the high resolution camera on Mars Reconnaissance Orbiter (MRO) on January 21, 2020, and shows several boulders at the bottom of a slope, along with the tracks those boulders made as they rolled downhill sometime in the far past.
Uphill is to the south. We know the dark spots at the end of these tracks are large boulders partly because of the wind streaks emanating away from them to the north. As the wind goes around each rock it produces eddies that produce the tracks. Based on the scale and the image resolution (about 10 inches per pixel), these boulders range in size from about one to five feet in diameter.
This image has two points of interest. First, the tracks left by the boulders seem to have a repeating pattern. My guess is that the pattern most likely formed because the boulders are not spherical in shape, and as they rolled each roll repeated a certain pattern reflecting that shape. This theory is reinforced by a close look at each boulder. Though the resolution is insufficient to resolve the boulders themselves, the pixel distribution for each strongly suggests an asymmetric shape.
Second, this image, when compared with an earlier MRO image of the same spot, taken fourteen years ago in December 2006, shows no obvious change. These tracks, and their boulders, have therefore probably sat here, as we see them, for a long time. Since there appear to be two sets of tracks, with one overlying the other, this suggests that two separate events (an earthquake or nearby impact) each time caused a bunch of boulders to break free and roll downward together, with the second set of boulder tracks crossing over the earlier set.
Establishing when those two events occurred, however, will require some on-site data, something that will likely not occur until humans roam the surface of Mars in large numbers.
Click for full image.
Cool image time! The photo to the left, cropped to post here, was taken by the high resolution camera on Mars Reconnaissance Orbiter (MRO) on January 21, 2020, and shows several boulders at the bottom of a slope, along with the tracks those boulders made as they rolled downhill sometime in the far past.
Uphill is to the south. We know the dark spots at the end of these tracks are large boulders partly because of the wind streaks emanating away from them to the north. As the wind goes around each rock it produces eddies that produce the tracks. Based on the scale and the image resolution (about 10 inches per pixel), these boulders range in size from about one to five feet in diameter.
This image has two points of interest. First, the tracks left by the boulders seem to have a repeating pattern. My guess is that the pattern most likely formed because the boulders are not spherical in shape, and as they rolled each roll repeated a certain pattern reflecting that shape. This theory is reinforced by a close look at each boulder. Though the resolution is insufficient to resolve the boulders themselves, the pixel distribution for each strongly suggests an asymmetric shape.
Second, this image, when compared with an earlier MRO image of the same spot, taken fourteen years ago in December 2006, shows no obvious change. These tracks, and their boulders, have therefore probably sat here, as we see them, for a long time. Since there appear to be two sets of tracks, with one overlying the other, this suggests that two separate events (an earthquake or nearby impact) each time caused a bunch of boulders to break free and roll downward together, with the second set of boulder tracks crossing over the earlier set.
Establishing when those two events occurred, however, will require some on-site data, something that will likely not occur until humans roam the surface of Mars in large numbers.
Axiom and SpaceX sign deal for flying commercial tourists to ISS
Capitalism in space: Axiom, the commercial company that already has an agreement with NASA to build its own commercial modules for ISS, has signed an agreement with SpaceX to use its crew Dragon capsule to ferry one professional and three tourists to ISS, as soon as the second half of 2021.
The private crew members will spend at least eight days on the orbiting research platform, allowing them to enjoy “microgravity and views of Earth that can only be fully appreciated in the large, venerable station,” Axiom said in a statement.
Axiom said Thursday it has signed a contract with SpaceX to transport a commander “professionally trained” by Axiom and three private astronauts to the space station on a Crew Dragon spacecraft. The mission could take off as soon as the second half of 2021, Axiom said.
This is SpaceX’s second commercial customer for its Dragon capsule. Two weeks ago it signed a deal with Space Adventures to fly four tourists on a crew Dragon for up to five days.
Capitalism in space: Axiom, the commercial company that already has an agreement with NASA to build its own commercial modules for ISS, has signed an agreement with SpaceX to use its crew Dragon capsule to ferry one professional and three tourists to ISS, as soon as the second half of 2021.
The private crew members will spend at least eight days on the orbiting research platform, allowing them to enjoy “microgravity and views of Earth that can only be fully appreciated in the large, venerable station,” Axiom said in a statement.
Axiom said Thursday it has signed a contract with SpaceX to transport a commander “professionally trained” by Axiom and three private astronauts to the space station on a Crew Dragon spacecraft. The mission could take off as soon as the second half of 2021, Axiom said.
This is SpaceX’s second commercial customer for its Dragon capsule. Two weeks ago it signed a deal with Space Adventures to fly four tourists on a crew Dragon for up to five days.
Bucky Covington – Different World
A evening pause: Performed live in 2014.
Hat tip Mike Nelson, who notes that the song probably “resonates far more to you and me than the performer. The lyrics trigger vibrant memories of my life as a kid in the 1960s going to Redeemer Lutheran grade school.” I agree, as someone who also grew up in the 1960s going to public school in Brooklyn, New York. Yet, I also suspect that Covington’s childhood, born in 1977 in North Carolina and growing up in the 1980s, was not that much different. No computers, and as a kid you played outside.
And most important of all, you grew up with a mother and a father, who were committed to staying together to raise their kids. That time is sadly long gone, and the children since have suffered terribly because of it.
.
NASA dubs next Mars rover “Perseverance”
NASA today announced that they have named their next Mars rover, due to launch in July, “Perseverance.”
The name was announced Thursday by Thomas Zurbuchen, associate administrator of the Science Mission Directorate, during a celebration at Lake Braddock Secondary School in Burke, Virginia. Zurbuchen was at the school to congratulate seventh grader Alexander Mather, who submitted the winning entry to the agency’s “Name the Rover” essay contest, which received 28,000 entries fromK-12 students from every U.S. state and territory.
“Alex’s entry captured the spirit of exploration,” said Zurbuchen. “Like every exploration mission before, our rover is going to face challenges, and it’s going to make amazing discoveries. It’s already surmounted many obstacles to get us to the point where we are today – processing for launch. Alex and his classmates are the Artemis Generation, and they’re going to be taking the next steps into space that lead to Mars. That inspiring work will always require perseverance. We can’t wait to see that nameplate on Mars.”
I truly hope that the rover is well-named, and lives a very long life on Mars, long enough that it is still in use the day an human arrives to touch it again.
NASA today announced that they have named their next Mars rover, due to launch in July, “Perseverance.”
The name was announced Thursday by Thomas Zurbuchen, associate administrator of the Science Mission Directorate, during a celebration at Lake Braddock Secondary School in Burke, Virginia. Zurbuchen was at the school to congratulate seventh grader Alexander Mather, who submitted the winning entry to the agency’s “Name the Rover” essay contest, which received 28,000 entries fromK-12 students from every U.S. state and territory.
“Alex’s entry captured the spirit of exploration,” said Zurbuchen. “Like every exploration mission before, our rover is going to face challenges, and it’s going to make amazing discoveries. It’s already surmounted many obstacles to get us to the point where we are today – processing for launch. Alex and his classmates are the Artemis Generation, and they’re going to be taking the next steps into space that lead to Mars. That inspiring work will always require perseverance. We can’t wait to see that nameplate on Mars.”
I truly hope that the rover is well-named, and lives a very long life on Mars, long enough that it is still in use the day an human arrives to touch it again.
Coronavirus and the madness of crowds
Yesterday I got a bit of frustrating and disappointing news. The 51st Lunar and Planetary Science Conference (LPSC-51) to be held in the Houston suburbs beginning on March 15 (to which I was planning to attend) had been canceled due to coronavirus/COVID-19 fears. From the organizers’ email:
We regret to inform you that LPSC 51 will be cancelled due to concerns about COVID-19. This difficult decision has been made after a careful assessment of the risks as determined by the CDC and WHO; consultation with NASA PSD leadership; and consideration of community feedback. We are fully committed to ensuring that our conference attendees remain safe and well.
The organizers had earlier in the week sent out an email stating that they were considering their options because of the epidemic, and would announce a decision on March 6. That they pushed forward the cancellation decision by two days was almost certainly prompted by the revelation yesterday that a case of coronavirus had been confirmed in Houston.
To say this is a disappointment is an understatement. I was very much looking forward to meeting face-to-face many of the planetary scientists I have been corresponding with during the past few years. I was also eagerly anticipating getting an up-front look at the most recent discoveries in the exploration of the solar system, and to pass those discoveries on to my readers.
My disappointment however must pale in comparison to the disappointment of the scientists involved, especially the younger ones trying to establish themselves in the field. They need conferences like this to not only promote their work, but to network and to learn for themselves what others in their field are doing.
What makes this decision more appalling to me is how completely pointless and fear-driven it is. While it makes sense to try to slow the spread of the disease while scientists scramble to understand it and possibly develop a vaccine, it also makes no sense to stop living and to cease all effort out of mindless fear and ignorant panic.
And what we have today is the latter. This planetary conference was not the only one cancelled this week. On March 2 the American Physical Society panicked and cancelled its only annual convention, only 36 hours before it was about to begin, out of a fear that a gathering of 11,000 scientists from all over the world would help spread the disease.
This decision was absurd, however, as a large bulk of the conference’s attendees had already arrived. The cancellation thus accomplished practically nothing to stop coronavirus, while succeeding ably in stymying the spread of knowledge.
The simple fact is that though COVID-19 is a concern and must not be ignored, it is hardly the worldwide crisis being touted by our mindless press, odious politicians, and largely politically correct intellectual community.
A rational look at the facts give a bit of context that deflates the balloon of this madness. Several facts, both good and bad:
» Read more
DARPA finally picks Northrop Grumman for satellite servicing
Capitalism in space: Following the successful docking of Northrop Grumman’s Mission Extension Vehicle-1 (MEV) to a decommissioned commercial communications satellite on February 27, 2020, DARPA has finally selected that company as its partner in its government-funded satellite servicing program.
For reasons that have been puzzling, DARPA previously rejected the MEV and chose in 2017 as its partner what was then a mostly Canadian company, causing legal protests. That company however backed out of the program in January, and with the success of MEV, DARPA could no longer justify its strange aversion to Northrop Grumman.
Northrop Grumman had planned to market MEV to commercial companies. The infusion of support from DARPA will accelerate that process.
Capitalism in space: Following the successful docking of Northrop Grumman’s Mission Extension Vehicle-1 (MEV) to a decommissioned commercial communications satellite on February 27, 2020, DARPA has finally selected that company as its partner in its government-funded satellite servicing program.
For reasons that have been puzzling, DARPA previously rejected the MEV and chose in 2017 as its partner what was then a mostly Canadian company, causing legal protests. That company however backed out of the program in January, and with the success of MEV, DARPA could no longer justify its strange aversion to Northrop Grumman.
Northrop Grumman had planned to market MEV to commercial companies. The infusion of support from DARPA will accelerate that process.
Florida to reconfigure Cape Canaveral roads to accommodate New Glenn
Capitalism in space: Because the first stages of Blue Origin’s New Glenn rocket will be so large and heavy, Florida is instituting a project to widen roads and move light and utility poles in order to accommodate the transport from the factory to the launchpad.
The road widening will make room for the stage, which must follow a route not usually used. The more direct route however requires the stage to cross a bridge that cannot take its weight. If New Glenn does begin to fly regularly, however, I would expect money will eventually be found to rebuild that bridge.
Capitalism in space: Because the first stages of Blue Origin’s New Glenn rocket will be so large and heavy, Florida is instituting a project to widen roads and move light and utility poles in order to accommodate the transport from the factory to the launchpad.
The road widening will make room for the stage, which must follow a route not usually used. The more direct route however requires the stage to cross a bridge that cannot take its weight. If New Glenn does begin to fly regularly, however, I would expect money will eventually be found to rebuild that bridge.