February 9, 2023 Zimmerman/Batchelor podcast
Embedded below the fold in two parts.
To listen to all of John Batchelor’s podcasts, go here.
» Read more
Embedded below the fold in two parts.
To listen to all of John Batchelor’s podcasts, go here.
» Read more
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, 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
February 9, 2023 Quick space links
Courtesy of BtB’s stringer Jay.
- Everyday Astronaut tours Stoke Space
The video is an hour long, but well worth the watch.
- Shotwell: Ukraine used Starlink for offensive military actions, something SpaceX had not expected
I don’t believe her. You would have to be incredibly naive to not expect the Ukraine to use this tool in any way it could in its desperate fight against the Russians, especially in the early part of the war when Russia occupied gigantic parts of the Ukraine.
Courtesy of BtB’s stringer Jay.
- Everyday Astronaut tours Stoke Space
The video is an hour long, but well worth the watch.
- Shotwell: Ukraine used Starlink for offensive military actions, something SpaceX had not expected
I don’t believe her. You would have to be incredibly naive to not expect the Ukraine to use this tool in any way it could in its desperate fight against the Russians, especially in the early part of the war when Russia occupied gigantic parts of the Ukraine.
Pushback: Civil rights complaint filed against California school district for running segregated program
Government endorsed segregation in California
“Segregation today, segregation tomorrow, segregation forever!” A civil rights complaint has been filed by the organization Parents Defending Education against the Pajaro Valley Unified School District in Santa Cruz County, California, for offering a segregated teacher support program that specifically excluded some races from attending.
As the program’s leaflet to the right shows, the program for “people of color” would not only give only certain races beneficial training, it would also give those participants “a stipend” that was forbidden to some employees due to their race.
It also appears that the program is also discriminatory on who it hires, as the coaches shown on that flyer are all minorities. Apparently, whites (and especially white males) need not apply.
You can read the actual civil rights complaint here [pdf]. As it notes bluntly:
» Read more
Government endorsed segregation in California
“Segregation today, segregation tomorrow, segregation forever!” A civil rights complaint has been filed by the organization Parents Defending Education against the Pajaro Valley Unified School District in Santa Cruz County, California, for offering a segregated teacher support program that specifically excluded some races from attending.
As the program’s leaflet to the right shows, the program for “people of color” would not only give only certain races beneficial training, it would also give those participants “a stipend” that was forbidden to some employees due to their race.
It also appears that the program is also discriminatory on who it hires, as the coaches shown on that flyer are all minorities. Apparently, whites (and especially white males) need not apply.
You can read the actual civil rights complaint here [pdf]. As it notes bluntly:
» Read more
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.
SpaceX completes 33-engine static fire test today of Superheavy prototype #7
Today’s Superheavy static fire test
SpaceX today successfully completed a 7-second-long static fire test of 31 of 33 Raptor-2 engines at the base Superheavy #7. The test ran for its full duration, and it appears no damage occurred to the launchpad. One engine shut down prior to test, and one shut down prematurely during the test. If this had happened during launch, the booster would still have had enough energy to get Starship to its required velocity to reach orbit.
The company will now have to analyze the test to determine whether it was sufficient to proceed to a March orbital launch. Certainly they will roll the booster back to the assembly building to exchange out the two engines that misfired.
All in all, it appears an orbital test flight of Starship could occur sometime in the next two months, assuming the FAA gets out of the way and issues the launch license.
EARLIER UPDATE:
—————-
Propellant loading is underway, and a rough time estimate for the actual static fire test is now 3 pm (Central).
Musk has now confirmed in a tweet that they are going to proceed to the test. It now appears that they have almost completed propellant loading. It appears they have filled the oxygen tanks, but not the methane tanks, and will probably not fill the methane tanks entirely for the test itself.
Original post:
—————-
No specific schedule has been announced of SpaceX’s attempt today to complete the first full 33-engine static fire test in Boca Chica of its seventh prototype of Superheavy, but a live stream is available from NASAspaceflight.com. I have embedded that live stream below.
The test will validate numerous systems, including the ground systems, the launchpad, the engines, and the systems for igniting all 33 in the proper sequence. Starship prototype #24 is not stacked on top of Superheavy in order to prevent any damage to it in case this test goes ugly. If so, SpaceX already has Superheavy prototype #9 ready to go in the nearby assembly building.
Today’s Superheavy static fire test
SpaceX today successfully completed a 7-second-long static fire test of 31 of 33 Raptor-2 engines at the base Superheavy #7. The test ran for its full duration, and it appears no damage occurred to the launchpad. One engine shut down prior to test, and one shut down prematurely during the test. If this had happened during launch, the booster would still have had enough energy to get Starship to its required velocity to reach orbit.
The company will now have to analyze the test to determine whether it was sufficient to proceed to a March orbital launch. Certainly they will roll the booster back to the assembly building to exchange out the two engines that misfired.
All in all, it appears an orbital test flight of Starship could occur sometime in the next two months, assuming the FAA gets out of the way and issues the launch license.
EARLIER UPDATE:
—————-
Propellant loading is underway, and a rough time estimate for the actual static fire test is now 3 pm (Central).
Musk has now confirmed in a tweet that they are going to proceed to the test. It now appears that they have almost completed propellant loading. It appears they have filled the oxygen tanks, but not the methane tanks, and will probably not fill the methane tanks entirely for the test itself.
Original post:
—————-
No specific schedule has been announced of SpaceX’s attempt today to complete the first full 33-engine static fire test in Boca Chica of its seventh prototype of Superheavy, but a live stream is available from NASAspaceflight.com. I have embedded that live stream below.
The test will validate numerous systems, including the ground systems, the launchpad, the engines, and the systems for igniting all 33 in the proper sequence. Starship prototype #24 is not stacked on top of Superheavy in order to prevent any damage to it in case this test goes ugly. If so, SpaceX already has Superheavy prototype #9 ready to go in the nearby assembly building.
Curiosity scientists find evidence of lake water higher on Mount Sharp than expected
Curiosity’s view of the marker band on January 17, 2023, the red dotted line the planned future route. Click for full image.
The science team for the Mars rover Curiosity today revealed that the marker band layer where the rover present sits shows some of the best evidence of liquid water and waves yet seen on Mount Sharp, and it has been found much higher on the mountain than expected.
Having climbed nearly a half-mile above the mountain’s base, Curiosity has found these rippled rock textures preserved in what’s nicknamed the “Marker Band” – a thin layer of dark rock that stands out from the rest of Mount Sharp. This rock layer is so hard that Curiosity hasn’t been able to drill a sample from it despite several attempts. It’s not the first time Mars has been unwilling to share a sample: Lower down the mountain, on “Vera Rubin Ridge,” Curiosity had to try three times before finding a spot soft enough to drill.
Scientists will be looking for softer rock in the week ahead.
As Curiosity climbs the mountain it transitions onto new younger layers of rock. Based on Curiosity’s earlier data lower down the mountain, scientists had assumed it had gone from layers that had been under a past lake to layers that were at the lake’s shoreline to layers where only running water once flowed. They had thought the marker layer and other higher layers would only show evidence of running water. Instead, in the marker layer they have once again found evidence of an ancient lake.
This quote by Ashwin Vasavada, Curiosity’s project scientist, sums things up nicely: “Mars’ ancient climate had a wonderful complexity to it, much like Earth’s.”
Curiosity’s view of the marker band on January 17, 2023, the red dotted line the planned future route. Click for full image.
The science team for the Mars rover Curiosity today revealed that the marker band layer where the rover present sits shows some of the best evidence of liquid water and waves yet seen on Mount Sharp, and it has been found much higher on the mountain than expected.
Having climbed nearly a half-mile above the mountain’s base, Curiosity has found these rippled rock textures preserved in what’s nicknamed the “Marker Band” – a thin layer of dark rock that stands out from the rest of Mount Sharp. This rock layer is so hard that Curiosity hasn’t been able to drill a sample from it despite several attempts. It’s not the first time Mars has been unwilling to share a sample: Lower down the mountain, on “Vera Rubin Ridge,” Curiosity had to try three times before finding a spot soft enough to drill.
Scientists will be looking for softer rock in the week ahead.
As Curiosity climbs the mountain it transitions onto new younger layers of rock. Based on Curiosity’s earlier data lower down the mountain, scientists had assumed it had gone from layers that had been under a past lake to layers that were at the lake’s shoreline to layers where only running water once flowed. They had thought the marker layer and other higher layers would only show evidence of running water. Instead, in the marker layer they have once again found evidence of an ancient lake.
This quote by Ashwin Vasavada, Curiosity’s project scientist, sums things up nicely: “Mars’ ancient climate had a wonderful complexity to it, much like Earth’s.”
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
ISRO successfully test fires a throttleable version of an engine used in two of its rockets
ISRO on January 30, 2023 successfully completed a static fire test of a throttleable version of its Vikas rocket engine, used in the upper stage of both its PSLV and GSLV rockets as well as in the GSLV’S first stage, running the engine at 67 percent power for a time period of 43 seconds.
The ability to adjust the power level of the engine during launch will give ISRO the ability to attempt the recovery of the first stages, as well as expand the ability of these rockets to place more satellites per launch in different orbits.
ISRO on January 30, 2023 successfully completed a static fire test of a throttleable version of its Vikas rocket engine, used in the upper stage of both its PSLV and GSLV rockets as well as in the GSLV’S first stage, running the engine at 67 percent power for a time period of 43 seconds.
The ability to adjust the power level of the engine during launch will give ISRO the ability to attempt the recovery of the first stages, as well as expand the ability of these rockets to place more satellites per launch in different orbits.
UAE engineers shift Al-Amal’s orbit to do fly-bys of Mars moon Deimos
Engineers from the United Arab Emirates (UAE) yesterday revealed that they are in the process of changing the orbit of their Al-Amal Mars orbiter so that it will be able to do several close fly-bys of the Martian moon Deimos.
Two of the three required manoeuvres have already been made, allowing it to reach a new orbit between 20,000km and 43,000km with a 25-degree incline towards the planet. “Previously, we didn’t have any reason to move the orbit,” Ms Al Matroushi said. “But now we’re exploring a new adventure and science mission.”
Engineers are using the probe’s three main science instruments to capture images and data of the moon. These include an exploration imager ― a high-resolution camera ― to photograph the moon, and the infrared and ultraviolet spectrometers to measure its temperature and observe its thermophysical properties, including its regolith, or dust.
The first Deimos fly-by took place in late January, and as the probe moves to its closest approach to the moon, it will take high-resolution images.
Eventually Al-Amal will dip as close as 60 miles of Deimos.
Engineers from the United Arab Emirates (UAE) yesterday revealed that they are in the process of changing the orbit of their Al-Amal Mars orbiter so that it will be able to do several close fly-bys of the Martian moon Deimos.
Two of the three required manoeuvres have already been made, allowing it to reach a new orbit between 20,000km and 43,000km with a 25-degree incline towards the planet. “Previously, we didn’t have any reason to move the orbit,” Ms Al Matroushi said. “But now we’re exploring a new adventure and science mission.”
Engineers are using the probe’s three main science instruments to capture images and data of the moon. These include an exploration imager ― a high-resolution camera ― to photograph the moon, and the infrared and ultraviolet spectrometers to measure its temperature and observe its thermophysical properties, including its regolith, or dust.
The first Deimos fly-by took place in late January, and as the probe moves to its closest approach to the moon, it will take high-resolution images.
Eventually Al-Amal will dip as close as 60 miles of Deimos.
FCC approves the first 3,000+ satellites in Amazon’s Kuiper constellation
FCC has now given Amazon its license to launch the first 3,236 satellites in its Kuiper internet constellation, including with that license new de-orbiting requirements that exceed the FCC’s actual statutory authority.
The Federal Communications Commission approved Amazon’s plan Feb. 8 to deploy and operate 3,236 broadband satellites, subject to conditions that include measures for avoiding collisions in low Earth orbit (LEO).
Amazon got initial FCC clearance for its Ka-band Project Kuiper constellation in 2020 on the condition that it secured regulatory approval for an updated orbital debris mitigation plan. The FCC said its conditional approval of this mitigation plan allows “Kuiper to begin deployment of its constellation in order to bring high-speed broadband connectivity to customers around the world.” The conditions include semi-annual reports that Kuiper must give the FCC to detail the collision avoidance maneuvers its satellites have made, whether any have lost the ability to steer away from objects, and other debris risk indicators.
In the order, the FCC also requires Kuiper to ensure plans to de-orbit satellites after their seven-year mission keep inhabitable space stations in addition to the International Space Station in mind.
According to the license, Amazon must launch 1,600 of these satellites by 2026.
The de-orbit requirements are part of the FCC’s recent regulatory power grab, and has no legal basis. The FCC’s statutory authority involves regulating the frequency of signals satellites use, as well as acting as a traffic cop to make sure the orbits of different satellites do not interfere with other satellites. Nowhere has Congress given it the right to determine the lifespan of satellites, or the method in which they are de-orbited.
Right now however we no longer live in a republic run by elected officials. In Washington it is the bureaucracy that is in charge, Congress being too weak, divided, and corrupt to defend its legal power. Thus, the FCC can easily grab new powers that it has no right to have.
FCC has now given Amazon its license to launch the first 3,236 satellites in its Kuiper internet constellation, including with that license new de-orbiting requirements that exceed the FCC’s actual statutory authority.
The Federal Communications Commission approved Amazon’s plan Feb. 8 to deploy and operate 3,236 broadband satellites, subject to conditions that include measures for avoiding collisions in low Earth orbit (LEO).
Amazon got initial FCC clearance for its Ka-band Project Kuiper constellation in 2020 on the condition that it secured regulatory approval for an updated orbital debris mitigation plan. The FCC said its conditional approval of this mitigation plan allows “Kuiper to begin deployment of its constellation in order to bring high-speed broadband connectivity to customers around the world.” The conditions include semi-annual reports that Kuiper must give the FCC to detail the collision avoidance maneuvers its satellites have made, whether any have lost the ability to steer away from objects, and other debris risk indicators.
In the order, the FCC also requires Kuiper to ensure plans to de-orbit satellites after their seven-year mission keep inhabitable space stations in addition to the International Space Station in mind.
According to the license, Amazon must launch 1,600 of these satellites by 2026.
The de-orbit requirements are part of the FCC’s recent regulatory power grab, and has no legal basis. The FCC’s statutory authority involves regulating the frequency of signals satellites use, as well as acting as a traffic cop to make sure the orbits of different satellites do not interfere with other satellites. Nowhere has Congress given it the right to determine the lifespan of satellites, or the method in which they are de-orbited.
Right now however we no longer live in a republic run by elected officials. In Washington it is the bureaucracy that is in charge, Congress being too weak, divided, and corrupt to defend its legal power. Thus, the FCC can easily grab new powers that it has no right to have.
ESA successfully unfurls solar sail from cubesat
The European Space Agency (ESA) has successfully unfurled a solar sail from a cubesat in order to test using that sail to help de-orbit that cubesat more quickly.
The sail was deployed from a package measuring 3.93 by 3.93 by 3.93 inches (10 by 10 by 10 centimeters). The unfurling process was captured by an integrated camera onboard the Ion satellite carrier, which is operated by the Italian company D-Orbit.
The satellite will eventually burn up in the atmosphere, providing a quicker, residue-free method of disposal, according to ESA.
A short video of that unfurling can be viewed here.
This flight was intended as a proof of concept. Thus, ESA like many similar NASA test projects will now close the project down, which is dubbed ADEO, having no specific plans to do anything with what was learned. Private cubesat companies, however, might adopt this solar sail deployment technology, but I suspect less for de-orbit purposes but instead as a method of maneuvering their satellite in orbit.
The European Space Agency (ESA) has successfully unfurled a solar sail from a cubesat in order to test using that sail to help de-orbit that cubesat more quickly.
The sail was deployed from a package measuring 3.93 by 3.93 by 3.93 inches (10 by 10 by 10 centimeters). The unfurling process was captured by an integrated camera onboard the Ion satellite carrier, which is operated by the Italian company D-Orbit.
The satellite will eventually burn up in the atmosphere, providing a quicker, residue-free method of disposal, according to ESA.
A short video of that unfurling can be viewed here.
This flight was intended as a proof of concept. Thus, ESA like many similar NASA test projects will now close the project down, which is dubbed ADEO, having no specific plans to do anything with what was learned. Private cubesat companies, however, might adopt this solar sail deployment technology, but I suspect less for de-orbit purposes but instead as a method of maneuvering their satellite in orbit.
Astronomers find ring around distant dwarf planet Quaoar
The uncertainty of science: Astronomers have confirmed the existence of an uneven ring encircling the dwarf planet Quaoar, orbiting far enough from the planet that, according to present theories, the ring should have quickly coalesced into a small Moon.
At 1,110 km (690 miles) in diameter Quaoar is one of the largest objects known in the outer solar system. Its single moon, named Weywot, spans about 160 km and was discovered in Hubble images in 2007. But the first signs of material around Quaoar didn’t come until 2018; even then, evidence was insufficient to call it a ring, says Morgado. He began studying Quaoar in 2020 with the European Space Agency’s CHEOPS space telescope, originally designed to find and characterize exoplanets. Rather than looking for exoplanet transits, Morgado used CHEOPS to observe stellar occultations, when Quaoar passed in front of distant stars and momentarily blocked their light.
Now Morgado has extended his work, working with others to observe Quaoar’s stellar occultations using other telescopes. The team first predicted a few occultations and recorded them. Then, after those observations hinted at a ring, the researchers went back through previous occultation records. “We saw the ring in nine different regions, from observations taken between 2018 and 2021,” Morgado explains.
In Nature, the team reports the presence of a ring 4,100 kilometers from the center of Quaoar, far beyond its classical Roche limit of 1,780 km. Morgado says the ring is dense and irregular. “It has a very thin region about 5 km wide and also a large region about 300 km wide, depending on which part of the ring was probed,” he notes. If the material could all be collected into a single moon, it would be about 10 km in diameter, less than a tenth of Weywot’s size.
According to astronomers, they would expect such a ring at that distance to coalesce in just a matter of decades. Either their theories of the Roche limit are incorrect, or the creation of this ring is very very recent, caused by the collusion of two objects that were orbiting Quaoar.
The uncertainty of science: Astronomers have confirmed the existence of an uneven ring encircling the dwarf planet Quaoar, orbiting far enough from the planet that, according to present theories, the ring should have quickly coalesced into a small Moon.
At 1,110 km (690 miles) in diameter Quaoar is one of the largest objects known in the outer solar system. Its single moon, named Weywot, spans about 160 km and was discovered in Hubble images in 2007. But the first signs of material around Quaoar didn’t come until 2018; even then, evidence was insufficient to call it a ring, says Morgado. He began studying Quaoar in 2020 with the European Space Agency’s CHEOPS space telescope, originally designed to find and characterize exoplanets. Rather than looking for exoplanet transits, Morgado used CHEOPS to observe stellar occultations, when Quaoar passed in front of distant stars and momentarily blocked their light.
Now Morgado has extended his work, working with others to observe Quaoar’s stellar occultations using other telescopes. The team first predicted a few occultations and recorded them. Then, after those observations hinted at a ring, the researchers went back through previous occultation records. “We saw the ring in nine different regions, from observations taken between 2018 and 2021,” Morgado explains.
In Nature, the team reports the presence of a ring 4,100 kilometers from the center of Quaoar, far beyond its classical Roche limit of 1,780 km. Morgado says the ring is dense and irregular. “It has a very thin region about 5 km wide and also a large region about 300 km wide, depending on which part of the ring was probed,” he notes. If the material could all be collected into a single moon, it would be about 10 km in diameter, less than a tenth of Weywot’s size.
According to astronomers, they would expect such a ring at that distance to coalesce in just a matter of decades. Either their theories of the Roche limit are incorrect, or the creation of this ring is very very recent, caused by the collusion of two objects that were orbiting Quaoar.
Progress freighter launched to ISS
Russia today completed its second launch of 2023, successfully using its Soyuz-2 rocket to send a Progess freighter on its way to ISS.
The capsule will dock with the leaking Zvezda module on ISS on February 11th.
The 2023 launch race:
9 SpaceX
5 China
2 Russia
1 Rocket Lab
1 Japan
American private enterprise still leads China 10 to 5 in the national rankings, and the entire world combined 10 to 8.
Russia today completed its second launch of 2023, successfully using its Soyuz-2 rocket to send a Progess freighter on its way to ISS.
The capsule will dock with the leaking Zvezda module on ISS on February 11th.
The 2023 launch race:
9 SpaceX
5 China
2 Russia
1 Rocket Lab
1 Japan
American private enterprise still leads China 10 to 5 in the national rankings, and the entire world combined 10 to 8.
Update on CAPSTONE in lunar orbit
Link here. The key takeaway is that this commercial privately built and operated lunar smallsat is doing what it was designed to do, even as its operators continue to overcome periodic technical problems.
For example, beginning January 26th the spacecraft stopped receiving commands from ground controllers. The problem solved itself when on February 6th “an automatic command-loss timer rebooted” the spacecraft. Meanwhile,
CAPSTONE has completed more than 12 orbits in its near-rectilinear halo orbit – the same orbit [that will be used by Lunar] Gateway – surpassing one of the mission’s objectives to achieve at least six orbits. The mission team has performed two orbit maintenance maneuvers in this time. These maneuvers were originally scheduled to happen once per orbit, but the mission team was able to reduce the frequency while maintaining the correct orbit. This reduces risk and complexity for the mission and informs plans for future spacecraft flying in this orbit, like Gateway.
Essentially, mission controllers are figuring out the best and most efficient methods for eventually maintaining Lunar Gateway’s orbit around the Moon, when it gets there.
Link here. The key takeaway is that this commercial privately built and operated lunar smallsat is doing what it was designed to do, even as its operators continue to overcome periodic technical problems.
For example, beginning January 26th the spacecraft stopped receiving commands from ground controllers. The problem solved itself when on February 6th “an automatic command-loss timer rebooted” the spacecraft. Meanwhile,
CAPSTONE has completed more than 12 orbits in its near-rectilinear halo orbit – the same orbit [that will be used by Lunar] Gateway – surpassing one of the mission’s objectives to achieve at least six orbits. The mission team has performed two orbit maintenance maneuvers in this time. These maneuvers were originally scheduled to happen once per orbit, but the mission team was able to reduce the frequency while maintaining the correct orbit. This reduces risk and complexity for the mission and informs plans for future spacecraft flying in this orbit, like Gateway.
Essentially, mission controllers are figuring out the best and most efficient methods for eventually maintaining Lunar Gateway’s orbit around the Moon, when it gets there.
Engineers struggle to salvage Lunar Flashlight cubesat
Because of thruster failures shortly after its December 11, 2022, NASA’s technology test lunar orbiter cubesat Lunar Flashlight has been unable to reach its planned orbit around the Moon.
Instead, first engineers have attempted an improvisation with the one thruster that had not initially failed, and when that did not work are now hoping to instead use the Earth’s gravity to shift its present path so that it will periodically fly over the Moon’s south pole, when it could possible still use its lasers reflectometer to gather data in the permanently shadowed craters there.
[Other than the thrusters, t]he rest of the CubeSat’s onboard systems are fully functional, and the mission recently successfully tested its four-laser reflectometer. This mini-instrument is the first of its kind and is designed and calibrated to seek out surface ice inside the permanently shadowed craters at the Moon’s South Pole.
As a engineering test satellite, everything that has happened has been to the good, as it has allowed these engineers to push this cutting edge cubesat technology to the limit.
Because of thruster failures shortly after its December 11, 2022, NASA’s technology test lunar orbiter cubesat Lunar Flashlight has been unable to reach its planned orbit around the Moon.
Instead, first engineers have attempted an improvisation with the one thruster that had not initially failed, and when that did not work are now hoping to instead use the Earth’s gravity to shift its present path so that it will periodically fly over the Moon’s south pole, when it could possible still use its lasers reflectometer to gather data in the permanently shadowed craters there.
[Other than the thrusters, t]he rest of the CubeSat’s onboard systems are fully functional, and the mission recently successfully tested its four-laser reflectometer. This mini-instrument is the first of its kind and is designed and calibrated to seek out surface ice inside the permanently shadowed craters at the Moon’s South Pole.
As a engineering test satellite, everything that has happened has been to the good, as it has allowed these engineers to push this cutting edge cubesat technology to the limit.
Midori- Variations on “The Last Rose of Summer” by Ernst
An evening pause: Performed live 1990, four days before her 19th birthday. As every single commenter at the youtube page correctly notes, this is an incredibly difficult piece. “Many great violinists won’t play this in public, or even record it.” Just watch and see. If you admire great guitar players, you will be astounded by some of the moves she performs.
Hat tip Judd Clark.
February 8, 2023 Quick space links
Courtesy of BtB’s stringer Jay.
- China holds technical meeting for developing its manned lunar spacecraft
It appears from the tweet that the main topic was the propulsion systems to be used.
- Tiangong-3 astronauts preparing for spacewalk, probably in the next day or so.
The tweet provides little information, other than a short uninformative video with stirring music.
- Firefly to do first launch for Space Force in May
The contract is part of the Space Force’s effort to have the ability to launch on 24 hours notice. Both Rocket Lab and Virgin Orbit are competing for similar contracts.
- Smallsat rocket company officials warn of industry “bloodletting”
Lots of whining about SpaceX, as well as the difficulty of rocket science. Translation: Competition and rocketry demands the best from you. Don’t complain, deliver.
- ISRO does drop tests into pool of Gaganyaan manned capsule prototype
Though the manned orbital mission is presently slotted for 2024, it is very unlikely that target date will be met.
- SpaceX’s Gwynne Shotwell said at a conference today it will attempt a 33-engine static fire test of Superheavy February 9, 2023
For this last quick link a hat tip to reader Richard M.
Courtesy of BtB’s stringer Jay.
- China holds technical meeting for developing its manned lunar spacecraft
It appears from the tweet that the main topic was the propulsion systems to be used.
- Tiangong-3 astronauts preparing for spacewalk, probably in the next day or so.
The tweet provides little information, other than a short uninformative video with stirring music.
- Firefly to do first launch for Space Force in May
The contract is part of the Space Force’s effort to have the ability to launch on 24 hours notice. Both Rocket Lab and Virgin Orbit are competing for similar contracts.
- Smallsat rocket company officials warn of industry “bloodletting”
Lots of whining about SpaceX, as well as the difficulty of rocket science. Translation: Competition and rocketry demands the best from you. Don’t complain, deliver.
- ISRO does drop tests into pool of Gaganyaan manned capsule prototype
Though the manned orbital mission is presently slotted for 2024, it is very unlikely that target date will be met.
- SpaceX’s Gwynne Shotwell said at a conference today it will attempt a 33-engine static fire test of Superheavy February 9, 2023
For this last quick link a hat tip to reader Richard M.
Dormant volcanic vent on Mars
Click for original image.
Cool image time! The photo to the right, rotated, cropped, and reduced to post here, was taken on November 19, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the science team labels “Intersecting Fissures.”
These fissures stand out distinctly on this terrain. If you look at an MRO context camera image, showing a wider view, you can see that the surrounding plain is relatively featureless, with few craters. Except for some strange and inexplicable dark streaks close by to the east, some mottled but flat terrain to the north, and a long but very faint similar east-west fissure to the south, this runelike fissure is the only major topological feature for miles around.
That context camera image also shows that this fissure sits on top of a very faint bulge, with hints that material had flowed downhill from the fissure’s western and southern outlets. Located very close to the equator, it is unlikely that any of those flow features are glacial, and in fact they do not have that appearance in the context camera picture. Instead, they have the look of Martian lava, fast-moving and far less viscous than Earth-lava, and thus able to cover large areas much more quickly.
Thus, all the evidence says that this feature is a dormant volcanic vent, sitting on a flood lava plain. And the overview map below cements this conclusion.
» Read more
Click for original image.
Cool image time! The photo to the right, rotated, cropped, and reduced to post here, was taken on November 19, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the science team labels “Intersecting Fissures.”
These fissures stand out distinctly on this terrain. If you look at an MRO context camera image, showing a wider view, you can see that the surrounding plain is relatively featureless, with few craters. Except for some strange and inexplicable dark streaks close by to the east, some mottled but flat terrain to the north, and a long but very faint similar east-west fissure to the south, this runelike fissure is the only major topological feature for miles around.
That context camera image also shows that this fissure sits on top of a very faint bulge, with hints that material had flowed downhill from the fissure’s western and southern outlets. Located very close to the equator, it is unlikely that any of those flow features are glacial, and in fact they do not have that appearance in the context camera picture. Instead, they have the look of Martian lava, fast-moving and far less viscous than Earth-lava, and thus able to cover large areas much more quickly.
Thus, all the evidence says that this feature is a dormant volcanic vent, sitting on a flood lava plain. And the overview map below cements this conclusion.
» Read more
Today’s blacklisted American: Previously blacklisted Oregon professor sues university for being further blacklisted because he tweeted “all men are created equal.”
Bruce Gilley of Portland State University
They’re coming for you next: Professor Bruce Gilley of Portland State University in Oregon, who previously had a peer-reviewed paper on colonialism
Bruce Gilley of Portland State University
They’re coming for you next: Professor Bruce Gilley of Portland State University in Oregon, who previously had a peer-reviewed paper on colonialism
