Three astronauts return to Earth safely from China’s Tiangong-3 space station

After completing six months in space on China7s Tiangong-3 space station, three astronauts safely returned to Earth yesterday, with their Shenzhou capsule touching down in inner Mongolia.

This mission was the first full six month mission on the station. During their mission they completed four spacewalks. Though little was published about what was accomplished on those EVAs, it is likely it involved completing the construction of the station as well as installing some exterior experiments.

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Russian communications satellite in trouble

A ten-year old Russian Ekspress geosynchronous communications satellite in early June developed problems that have forced engineers to shut down much of its capabilities.

The problem was similar to issues experienced in 2020 on a second similar Ekspress orbiting geosynchronous communications satellite, suggesting both satellites had the same design flaw.

For Russia the problem is made much more serious because its invasion of the Ukraine has made it impossible to replace this satellite.

The latest impact on Russian satellite communications capacity came at a time when the established production model for the Ekspress satellite family, relying on Western suppliers, had been disrupted by the Kremlin’s escalation of the war against Ukraine in 2022, likely resulting in severe delays if not a complete stop in the development of this type of spacecraft in Russia.

In other words, Russia has lost significant communications capacity, and does not have a way to replace that capacity because of the sanctions against it imposed because of its invasion. Once again, Putin’s idiotic war in the Ukraine has caused nothing but disaster for Russia.

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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

SpaceX successfully launches cargo Dragon to ISS

Capitalism in space: SpaceX this morning successfully launched another cargo Dragon freighter to ISS, lifting off on a Falcon 9 rocket from Cape Canaveral.

This cargo capsule is on its fourth flight. The first stage completed its fifth flight, landing on a drone ship in the Atlantic. The capsule carries about 7, 000 pounds of supplies, including another set of new solar arrays for ISS, and will dock with ISS tomorrow.

The leaders in the 2023 launch race:

38 SpaceX
20 China
8 Russia
5 Rocket Lab

American private enterprise now leads China 43 to 20 in the national rankings, and the entire world combined 43 to 36. SpaceX by itself leads the world 38 to 36, but when you add other American companies it still trails everyone else combined 38 to 42.

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SpaceX launches 22 2nd generation Starlink satellites

SpaceX this morning successfully launched another 22 2nd generation Starlink satellites into orbit, with its Falcon 9 rocket lifting off from Cape Canaveral at 8:20 am (Eastern).

The first stage completed its third flight, landing successfully on a drone ship in the Atlantic. The two fairing halves completed their sixth and ninth times respectively.

The company had hoped to follow this launch with a second from Cape Canaveral only hours later, sending a new Dragon cargo freighter to ISS, but that launch was scrubbed due to weather concerns later in the day. It has been rescheduled for tomorrow.

The leaders in the 2023 launch race:

37 SpaceX
20 China
8 Russia
5 Rocket Lab

American private enterprise now leads China 42 to 20 in the national rankings, and the entire world combined 42 to 36. SpaceX by itself leads the world 37 to 36, but when you add other American companies it trails everyone else combined 37 to 42.

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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.

 

โ€œZimmermanโ€™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.โ€ โ€”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.

On the radio

On short notice, Steve Thomson at WCCO-AM in Minneapolis-St. Paul, Minnesota has scheduled me today for a twenty minute interview, beginning at 2:10 pm (Central). Should be fun, talking about all things space.

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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

Avalanche to the east of Gale Crater on Mars

Landslide on Mars
Click for original picture.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on February 19, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows an avalanche that slumped downward out of the material that forms the interior western wall of an unnamed 25-mile-wide crater about 100 miles east of Gale Crater, where Curiosity has been roving for more than a decade.

The scientists call these types of Martian avalanches “mass-wasting events”, since the entire mass of the cliff moves downhill in a chunk, rather than as a pile of rocks that grows in size and strength as it picks up material on its way down.

It is not clear how old this slide is. A lot of the material on this slope appears to be Martian dust, some of which has flowed into the avalanche material after it had slide downhill.
» Read more

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Shadowcam on South Korea’s Danuri lunar orbiter sees no obvious ice in the permanently shadowed interior of Spudis crater

Overview map

Using Shadowcam, a camera built by Arizona State University that is on South Korea’s Danuri lunar orbiter and is designed to see into very dark regions of little light, scientists have obtained optical images showing the permanently shadowed interior of Spudis Crater, located only about ten miles from the Moon’s south pole.

That picture is below. To the left is an annotated overview created from Lunar Reconnaissance Orbiter (LRO) high resolution images. The white box inside Spudis Crater indicates the area covered by the section of the Shadowcam image I have focused on. The red outlines indicate areas that are thought to be permanently shadowed. The relatively flat ridgeline between Shackleton and Spudis is one of the prime future landing sites for NASA’s Artemis program.
» Read more

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Newly discovered Starliner issues delay launch again

NASA and Boeing revealed today that two newly discovered design issues involving Starliner’s parachutes and the tape used to protect the capsule’s wiring has forced it to cancel the planned June launch, with no firm new launch date scheduled.

The parachute issue involves the parachute cords, specifically the “soft link joints” that connect those lines to the capsule.

[Mark Nappi, Boeing’s Starliner VP] told reporters fabric links that join the parachutes to the lines of the spacecraft, called soft link joints, need to be replaced and possibly recertified to withstand heavier loads and stresses to ensure crew safety. “They were tested recently because of a discovery that we found during the review process where we believed that the data was recorded incorrectly,” Nappi said. “We tested (the soft links), and sure enough, they did fail at the lower limit.” [emphasis mine]

The tape — which has been found to be far more flammable than expected — is difficult to fix.

The second problem found last week is more extensive since the tape used to protect Starliner’s wiring harnesses from nicks or abrasions runs for hundreds of feet through several of the spacecraft’s internal systems. “There is a lot of tape on the wire harnesses,” Nappi said. “We’re looking at solutions that would provide for potentially another type of wrapping over the existing tape in the most vulnerable areas that reduces the risk of a fire hazard.”

That both of these issues were not fixed in development is beyond astonishing and speaks so badly of Boeing’s engineering and management that it is difficult to find words. In fact, for Boeing to use tape that could cause a fire now, more than a half century after the Apollo 1 capsule fire, suggests a level of incompetence that makes one wonder why anyone would ever fly on any of its spacecraft or airplanes. This is certainly not the company that built the 747.

Officials indicated that they might be able fix this issues fast enough that a fall launch could occur, but made no promises.

For Boeing, this new delay only worsens its bottom line. It built Starliner on a fixed-price contract, so every delay and issue must be paid for by it, not NASA. Meanwhile, the delays mean that SpaceX is getting flight contracts to ISS from NASA, contracts that Boeing would have gotten had Starliner been ready as planned. Worse, ISS is now looking at a 2028 retirement. If Boeing doesn’t get Starliner operational soon, there might not even be any contracts for it to win.

I have embedded the full press conference below for those who wish to watch NASA and Boeing officials blather about how they really haven’t done anything stupid here. Really, you have got to believe them!
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