Chinese robotic servicing satellite now approaching another Chinese servicing satellite

9:39 am

It now appears that one Chinese robotic servicing satellite, Shijian-25, is now approaching another Chinese servicing satellite, Shijian-21, and it is expected that the two will eventually dock in order to test refueling technology.

Shijian-25 was launched in January to test on-orbit refueling and mission extension technologies, while Shijian-21 was launched in October 2021.

Shijian-21 has already executed its primary mission, docking with the defunct Beidou-2 G2 navigation satellite and towing it into a graveyard orbit above GEO. It had been passively drifting westward in GEO for much of the last year, according to COMSPOC, suggesting it may have run out of fuel, but it recently initiated maneuvers taking it towards Shijian-25.

Shijian-21 has since parked at 127.5 degrees East. Now, Shijian-25 is drifting eastwards towards Shijian-21. The two satellites are in a phased orbit, meaning their key orbital elements—such as semi-major axis, eccentricity, inclination, right ascension of the ascending node and argument of perigee—are nearly identical, but remain separated by a distance along the same path. This minimizes fuel required for a future rendezvous. The pair are expected to meet June 11 at current rate of approach, though Shijian-25 will likely slow down as it closes in.

In other words, China used the older satellite to test docking and tug operations, and now plans to use the new satellite to refuel it for further operations.

Nor are these the only satellites that are maneuvering into the area. Two American military surveillance satellites have moved in, are flying in parallel, and are likely there to observe the Chinese operations.

1 comment

Two spaceports in Alaska sign partnership agreement

9:28 am

Alaska spaceports

The Alaska Aerospace Corporation, which runs the Kodiak spaceport in Alaska, has now signed a five year partnership agreement with University of Alaska’s Geophysical Institute in Fairbanks, which runs the Poker Flat suborbital spaceport, to upgrade the latter for commercial orbital launches.

Though the terms of that agreement are highly technical, Gov. Mike Dunleavy’s draft budget for the corporation indicates that the university plans to seek a FAA spaceport license for the university’s Poker Flat Research Range, which has been flying sounding rockets — smaller rockets used for research — into the upper atmosphere since March 1969, including some earlier this spring.

An FAA license could allow Poker Flat to launch larger rockets, and for commercial purposes, not just scientific ones. Making Poker Flat a “licensed vertical orbital spaceport” could take up to two years, the budget documents state.

The map to the right shows the location of each spaceport. You can read the text of the agreement here [pdf].

Kodiak has been used recently by several orbital rocket startups, most often by Astra. Poker Flat in turn has only done suborbital launches (mostly for universities), and its interior location suggests it would have a very limited capability to do orbital launches. The lower stages of any orbital rocket would crash either in Alaska or Canada, something that neither the U.S. or Canada has previously allowed.

The deal however allows both spaceports to coordinate their effort, which might bring more business to both, for different purposes.

3 comments

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

Europe approves SES purchase of Intelsat

9:00 am

The European Commission has now approved the purchase of the long established satellite communications company Intelsat by the long established Luxembourg satellite communications company SES for about $4 billion.

This decision follows an approval by the government of the United Kingdom. It now appears the only remaining regulatory hurdle is approvals by the FCC and the Department of Justice in the U.S.

This buy-out follows similar mergers by other old established satellite companies, such as the merger of Viasat with Imarsat and OneWeb with Eutelsat. All are occurring because these older companies, which mostly launched large geosynchronous satellites, have been under heavy competitive pressure from the low orbit constellations like Starlink and OneWeb.

Whether these older companies can compete following these mergers however remains uncertain. To succeed they need to have a product customers want, and at the moment it isn’t clear they have one.

0 comments

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.

Axiom’s fourth commercial manned mission scrubbed due to leak

8:04 pm

Axiom and SpaceX have scrubbed the launch tomorrow of Axiom’s fourth commercial manned mission to ISS due to an oxygen leak detected during the standard prelaunch static fire test.

NASA, Axiom Space, and SpaceX are standing down from the launch opportunity on Wednesday, June 11, of Axiom Mission 4 to the International Space Station to allow additional time for SpaceX teams to repair a liquid oxygen leak identified during post-static fire Falcon 9 rocket inspections. A new launch date for the fourth private astronaut mission will be provided once repair work is complete, pending range availability.

There a number of launches already scheduled for Florida in the next few days, so it could be that the launch of Ax-4 could be delayed by more than a few days.

3 comments

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

June 10, 2025 Quick space links

2:19 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

I post this early because I have a hour-long taping with Robert Pratt of Pratt on Texas this afternoon, and want to get it up beforehand.

1 comment

Mexican officials demand investigation into Starship/Superheavy debris on its beaches

11:23 am

Mexican officials of the border state adjacent to Texas are now demanding an investigation into Starship/Superheavy debris that has been found recent on its coast, claiming SpaceX is “polluting Mexican beaches.”

Karina Lizeth Saldivar, the head of the Tamaulipas Secretariat for Urban Development and Environment, recently announced that they would be requesting that federal authorities in Mexico investigate the damages and potential damages that rocket fragments could cause.

According to Saldivar, the rocket pieces could pose a potential danger to locals and claimed that her agency would request a formal investigation by Mexican federal environmental agencies. It remains unclear if Mexico’s government could do anything about the issue.

Saldivar is a typical government apparachik. Rather than try to develop the beach area in Mexico that is close to Boca Chica and thus provides a great tourist spot for viewing launches, she instead can only whine and demand the government shut things down.

Meanwhile, the article notes that ordinary Mexicans aren’t complaining. Instead, they have been collecting the rocket pieces enthusiastically, with some making money by selling them as collector’s iten on social media.

4 comments

Trump eliminates restrictions against supersonic flights over the U.S.

9:50 am

In an executive order released on June 6, 2024, President Trump eliminated the half-century-old regulations that forbid supersonic airplanes to fly over the land mass of the United States.

The Administrator of the Federal Aviation Administration (FAA) shall take the necessary steps, including through rulemaking, to repeal the prohibition on overland supersonic flight in 14 CFR 91.817 within 180 days of the date of this order and establish an interim noise-based certification standard, making any modifications to 14 CFR 91.818 as necessary, as consistent with applicable law. The Administrator of the FAA shall also take immediate steps to repeal 14 CFR 91.819 and 91.821, which will remove additional regulatory barriers that hinder the advancement of supersonic aviation technology in the United States.

This order makes sense for several reasons. First, the restrictions were always absurd. The sonic boom concern was always over-rated. Second, the concern increasingly doesn’t exist due to improvements in technology. In a flight test in January, the commercial supersonic airplane startup Boom Aerospace confirmed that its test plane broke the sound barrier three times and each time with “no audible sonic boom.”

Though Boom isn’t the only supersonic startup, it is far ahead of the others. It already has orders from United and Japan airlines for its Overture 80-passenger supersonic jet. This new Trump order will certainly help it attract investment capital, as well as more airlines willing to buy its planes.

4 comments

Blue Origin again delays 2nd launch of New Glenn

9:37 am

According to a statement from David Limp, the CEO of Blue Origin, on June 9, 2025, the company has once again delayed the second launch of its new New Glenn rocket, pushing back from May to August.

New Glenn’s second mission will take place NET August 15th. Following in the footsteps of our first booster, we’ve chosen the name “Never Tell Me The Odds” for Tail 2. One of our key mission objectives will be to land and recover the booster.

The rocket’s first launch had occurred in January, and successfully placed its test payload in orbit as intended, though it was unable to land the first stage on its barge in the Atlantic. Blue Origin later said it was targeting May for the second launch, carrying NASA’s two Escapade smallsat Mars orbiters. With this new delay it is unclear what the payload would be.

According to this report, anonymous sources claim an August launch is unlikely and will likely slip to September. The company has a large backlog of launch contracts, including 27 for Amazon’s Kuiper constellation as well as a number for the military. The hope had been that it could ramp up its launch cadence in 2025 to meet those contracts.

Instead, Amazon has begun shifting some of its launch work to SpaceX’s Falcon 9. Its FCC license requires it to get 1,600 satellites in orbit by July 2026, and at present it only has sixteen in space. It can no longer wait for Blue Origin to dilly-dally along.

Considering the actual success of the first launch, it seems very puzzling for there to be a nine-month delay until the second launch, even with the failure to land the first stage. Was there some technical problems with the rocket that have not been revealed? It seems foolish to delay further launches in order to fix the landing of the first stage, since that has no impact on getting the customer’s payload into orbit. Wouldn’t it be better to fly again, test the landing again during flight, than sit on the ground looking at computer simulations?

It is also possible the company is still having production problems producing enough BE-4 engines for both ULA’s Vulcan rocket and its own New Glenn. Vulcan uses two per launch, and according to ULA Blue Origin has delivered enough to begin launching Vulcan as many as fifteen times before the end of this year. New Glenn uses seven BE-4s on its first stage. Could it be that Blue Origin wasn’t able to produce enough of these engines for this year’s New Glenn launches?

All this is speculation. What we do know for certain is that both of these companies continue to disappoint. The result is that for larger payloads the United States remains reliant entirely on SpaceX, a situation that is not healthy for the commercial and government satellite industry.

9 comments

Scientists increase the odds asteroid 2024 YR4 will impact the Moon in 2032

9:10 am

Asteroid 2024 YR4 in 2032
Click for original image.

Using additional data obtained by the Webb Space Telescope, scientists have now refined the orbit of potentially dangerous asteroid 2024 YR4 and confirmed that while it will almost certainly not hit the Earth in 2032, the odds of it impacting the Moon have increased.

With the additional data, experts from NASA’s Center for Near-Earth Object Studies at the agency’s Jet Propulsion Laboratory in Southern California further refined the asteroid’s orbit. The Webb data improved our knowledge of where the asteroid will be on Dec. 22, 2032, by nearly 20%. As a result, the asteroid’s probability of impacting the Moon has slightly increased from 3.8% to 4.3%. In the small chance that the asteroid were to impact, it would not alter the Moon’s orbit.

The yellow line in the image to the right shows the present range of positions the asteroid could be in as it passes the Moon on that date. It is expected this range will be narrowed further when the asteroid flies past the Earth harmlessly in 2028.

If the asteroid should hit the Moon, the impact will provide scientists a great opportunity to learn more about asteroids and the Moon. If it should miss, it will then be essential to recalculate its orbit to see what will happen on later near approaches, whether the fly-by increased or decreased the chances of a later Earth impact.

9 comments

SpaceX launches 23 more Starlink satellites

8:54 am

SpaceX this morning successfully launched another 23 Starlink satellites (including 13 with phone-to-satellite capabilities), its Falcon 9 rocket lifting off from Cape Canaveral in Florida.

The first stage completed its twelfth flight, landing on a drone ship in the Atlantic.

The leaders in the 2025 launch race:

72 SpaceX
33 China
7 Rocket Lab
6 Russia

SpaceX now leads the rest of the world in successful launches, 72 to 53.

SpaceX’s launch of Axiom’s AX-4 manned commercial mission to ISS, carrying government astronauts from India, Poland, and Hungary, has been delayed one more day to 8 am (Eastern) tomorrow due to weather issues.

1 comment
1 … 175 176 177 178 179 … 2,928