SpaceX launches another 60 Starlink satellites

9:10 am

Capitalism in space: SpaceX early this morning successfully launched another 60 Starlink satellites into orbit using its Falcon 9 rocket.

The company also successfully used a first stage for a record ninth time, landing it on its drone ship in the Atlantic. The booster did all nine flights in just over two years.

The 2021 launch race:

8 SpaceX
6 China
3 Russia
1 Rocket Lab
1 Virgin Orbit
1 Northrop Grumman
1 India

The U.S. now leads China 11 to 6 in the national rankings.

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Air leak continues despite repairs on Zvezda module of ISS

9:48 am

According to a report today in the Russian press, the air in the Zvezda module of ISS continued to leak away slowly during a test, following this week’s repair of two cracks in the module’s hull.

At about 07:00 GMT on Saturday, ISS cosmonaut Sergei Ryzhikov told a specialist at the Mission Control Center, located near Moscow, that the pressure in the intermediate chamber of the Zvezda module was 678 millimetres of mercury. The pressure stood at 730 millimetres of mercury on Friday evening, right after the hatch of the compartment was closed. Thus, the pressure in the chamber decreased by 52 millimetres of mercury over 11.5 hours.

Based on the thorough nature of the two repairs, this leak must be coming from another very tiny leak that has not yet been detected. Though the leak is very slow and thus not an immediate threat to the astronauts on board, it suggests once again that the leaks are coming from stress fractures resulting from Zvezda’s 20-plus years in orbit. If so, the problem is very serious indeed. Zvezda is the central module for ISS. Replacing it will not be simple or easy.

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Genesis cover

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 or any other book seller. If you want an autographed copy the price is $60 for the hardback and $45 for the paperback, plus $8 shipping for each. Go here for purchasing details. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from 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

China launches three military ocean reconnaissance satellites

11:33 pm

China successfully used its Long March 4C rocket to launch three military ocean reconnaissance satellites on Friday, March 13, 2021 (in China).

The article also includes some details about the upcoming schedule of launches in connection with China’s space station, beginning with the April 29th launch of the station’s first module, Tianhe-1, followed in May by the launch and docking of its unmanned Tianzhou-2 cargo freighter, and then followed by the first crew in June.

The 2021 launch race:

7 SpaceX
6 China
3 Russia
1 Rocket Lab
1 Virgin Orbit
1 Northrop Grumman
1 India

The U.S. still leads China 10 to 6 in the national rankings.

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The Offspring – Self Esteem

6:01 pm

An evening pause: Performed live 1995.

Hat tip Jim Mallamace, who added, “A time before cell phones waved in everyone’s hand. A time where crowds were in the moment. A time when there were crowds.”

I would add it was a time when people were also not afraid, but lived life with spirit and exuberance, ignoring its natural risks because to pay attention to them would make life intolerable.

Enjoy your weekend. Get out of your house. Do something grand. And do it with as many people as you can find.

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Conscious Choice cover

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.

How the blobby craters on Mars help map the planet’s existing accessible water

2:45 pm

Distorted blobby crater rim in Utopia Planitia
Click for full image.

Today’s cool image on the right, rotated, cropped, and reduced to post here, is part of a series of cool images that have repeatedly shown the blobby and squishy look of crater impact sites in the Martian northern lowland plain dubbed Utopia Planitia. Taken on January 2, 2021 by the high resolution camera on Mars Reconnaissance Orbiter (MRO), it shows the southeast rim of a very distorted crater that appears filled with glacial material and is also surrounded by an apron of smooth material.

At 42 degrees north latitude, it is somewhat expected to find evidence of glacial-like features in such a crater. Moreover, throughout the 30 to 60 degree mid-latitude band in Utopia Planitia are found numerous such blobby craters (other examples found here, here, and here), all suggesting that the impact occurred on a flat plain with a layer of water ice close to the surface. The heat of the impact melted that ice layer. In such a circumstance, the crater rims were easily deformed because as liquid water (for a short time) it could flow into any number of shapes.

At least that’s my theory. According to Colin Dundas of the U.S. Geological Survey’s Astrogeology Science Center in Arizona,

The exact processes that create the patterns are still debated. The flattened/degraded rims are not necessarily related to this morphology, as such craters can have sharp rims, so they may relate to post-impact modification.

In other words, later erosion after the crater formed could have rounded the rim and maybe even distorted it from a circle.

Regardless, the processes that made this crater rim look as it does were clearly widespread, as shown in the wider view below, provided by the context camera on MRO.
» Read more

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Today’s blacklisted American: Students condemn UConn student president for defending free speech

1:07 pm

The cancelled Bill of Rights

They’re coming for you next: The Undergraduate Student Government (USG) Governing Board at the University of Connecticut has condemned its student president, Mike Hernández, because he is supporting campus legislation that would protect the free speech rights of students.

The bill, which was introduced by sixth semester junior political science and economics double major Isadore Johnson, aims to protect students and their right to freely express their opinions within student government and also at UConn as a whole.

Opponents of the bill, however, have argued the legislation gives students a free pass to express casual racism, homophobia and misogyny without consequence, and have expressed concern over Hernández’s support of the bill.

The board is using as its trigger to condemn Hernández a single comment he supposedly made privately to another student, where he allegedly said that affirmative action legislation as well as rules forbidding anyone from saying anything offensive about minorities is equivalent “to treating minorities like children.” From that board’s statement, which was approved by this board by a vote of 8-1, with one abstention:
» Read more

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Leaving Earth cover

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

Russia: Air leaks fixed on Zvezda

9:30 am

According to the Russian state-run press, Russian astronauts have completed their repair work on the ISS module Zvezda and are about to seal the module to test their work.

“The crew of the International Space Station has completed the repair and recovery work on the hull of the Zvezda module. In the coming days, Sergei Ryzhikov and Sergei Kud-Sverchkov will close the hatches in the Zvezda module to check the atmospheric level,” the press office said.

Previous reports suggested the astronauts had located a total of two cracks, both now sealed.

The larger question however remains. Are the cracks stress fractures, and if so do they suggest that Zvezda’s 20-year-old hull is beginning to fail? The Russians have been very silent about these questions, though they have admitted the possibility once or twice, almost as an aside.

Nor has NASA been forthcoming. The American space agency has apparently joined the Russians in keeping this problem out of the news, at all costs. Once, the employees at NASA were Americans who demanded openness from Russia and from themselves. No more. Increasingly our government workers are indistinguishable from Soviet apparatchiks, whose main goal was to protect the government from bad press.

If Zvezda’s hull is failing then ISS faces some very serious engineering issues. They can be solved, but not by silence and sticking one’s head in the sand.

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Hubble about to resume science operations even with new issues

9:14 am

Engineers have fixed the computer software issue that caused the Hubble Space Telescope to go into safe mode this week, and are preparing it to return to full science operations.

It appears the problem was caused by a software upgrade that caused a conflict.

More serious however was this problem, which could have damaged the telescope beyond repair had it had been randomly pointed at the Sun during safe mode.

In entering safe mode on Sunday, however, the team discovered that the aperture door located at the top of the telescope failed to automatically close. This door is a safeguard designed to keep the Sun’s damaging light and heat out of the telescope’s interior, protecting its sensitive instruments and their surroundings. It serves as a safety net if Hubble accidently points in the direction of the Sun due to an error or hardware problem.

…The team has looked at spacecraft engineering data, run various tests, and verified that the door did indeed remain open despite the commands and power being sent to close it. Additional attempts to move the door by sending commands from the ground to its primary motor also failed to make the door move. However, the same commands sent from the ground to its backup motor did indicate movement, and that motor is now set as the primary motor. The team is looking at options to further reduce any associated risk.

It appears the primary motor that moves the door has failed. Fortunately there is a backup motor, but this is just one more item where the telescope has lost redundancy. We are very lucky that during safe mode the telescope didn’t end up pointing at the Sun, even for a very short time, for that would have ended Hubble’s operation for good. I suspect the safe mode software includes protections against that occurrence, but the possibility nonetheless existed.

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Military band joke

6:01 pm

An evening pause: One marching band from Britain is performing to an Italian audience when a band representing the Italian Bersaglieri (mobile light infantry who traditionally run at a trot instead of march) arrives to upstage them.

Silly and staged, but fun nonetheless.

Hat tip Jim Mallamace.

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China successfully launches new Long March 7A rocket

2:46 pm

The new colonial movement: China today successfully launched for the first time its new Long March 7A rocket, likely designed to replace its Long March 3B.

The Long March 7A is a 60.1-meter-long, 3.35-meter-diameter kerosene and liquid oxygen launch vehicle with four side boosters, capable of delivering up to 7 metric tons of payload to GTO [geosychronoous transfer orbit]. The launcher draws on new kerosene engine technologies along with a stage modified from the older Long March 3B series, China’s current workhorse rocket, boosting China’s launch options to GTO.

The Long March 7A is more capable than the Long March 3B, which can launch 5.5 tons to GTO. By launching from the coast, it also does not incur the cost and hazards of the inland 3B launches. [China] plans to carry out 3-5 Long March 7A launches a year by 2025. The first launch of the Long March 7A failed in March 2020. A loss of pressure occurred after first stage separation, which led to engine malfunction.

The 2021 launch race:

7 SpaceX
5 China
3 Russia
1 Rocket Lab
1 Virgin Orbit
1 Northrop Grumman
1 India

The U.S. still leads China 10 to 5 in the national rankings.

4 comments

Today’s blacklisted Americans: South Alabama University suspends 3 professors for 2014 Halloween costumes

2:07 pm

The cancelled Bill of Rights

They’re coming for you next: The University of South Alabama this month suspended three professors for wearing Halloween costumes back in 2014, seven years ago.

The photos show “then-Mitchell College of Business dean Bob Wood dressed as a Confederate general and professors Alex Sharland and Teresa Weldy posing with a whip and a noose,” WKRG5 reports.

The three teach in the university’s Mitchell College of Business. Wood and Sharland, who have tenure, have apologized, while Weldy, who is not tenured, “chose not to apologize,” the news station reports.

University brass is reportedly taking heat from the campus community for being aware of the photos since 2020 but not doing more about it. With that, [university President Tony] Waldrop upped his efforts on the nearly 7-year-old matter, calling the costumes and poses “offensive” and “contrary to our core principles of diversity and inclusion.” He pledged in his statement that the university will “address this situation in a manner that demonstrates our unwavering commitment to diversity, inclusion, and a safe and welcoming environment for every member of our community.” [emphasis mine]

» Read more

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Curiosity faces the mountains

11:48 am

A cropped section from Perseverance's 1st panorama
A cropped section from Perserverance’s 1st panorama.
Click for full image.

Though the present excitement over the spectacular images and sounds coming down from Perseverance is certainly warranted, what must be understood is that this rover is presently only at the beginning of its journey, and is thus sitting on relatively boring terrain, from a merely visual perspective. The scientists might be excited, but to the general public, all we really are seeing is a flat dusty desert with some scattered rocks on the floor. In the far distance can be seen some hills and mountains (Jezero Crater’s rim), but they are very far away.

Curiosity, which the press and the public has largely forgotten about, is actually just beginning what will likely be the most breath-taking part of its journey. As I noted in my last rover update last week, Curiosity is now at the very base of Mount Sharp, and is about to enter the mountain’s canyons and initial slopes. For its past eight-plus years of roving it has been on the flat floor of Gale Crater, followed by some weaving among the smallest foothills of Mount Sharp. The views have been intriguing and exciting from a research perspective, but hardly breath-taking from a picture-taking point of view.

That is now changing. The picture below, taken by Curiosity just this week, gives us a taste of what is to come.
» Read more

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