ESA partners with French company to build space plane “demonstrator”

The European Space Agency (ESA) and the French company Dassault Aviation yesterday announced a partnership for building a space plane “demonstrator” that will lay the groundwork for developing a family of such spacecraft dubbed Vortex.

The ESA press release is here. Both this release and the Dassault release linked to above provided little detailed information, other than the demonstrator will be a small scale suborbital testbed for eventually developing the full scale orbital vehicle. Neither a budget nor time schedule were even hinted at.

ESA has funded a number of these demonstrators in the past decade — Themis and Callisto come to mind — all of which are behind schedule and have as yet not flown. It will be interesting to see if this project fares better, as it seems it is being led by a single commercial company rather than the government run mishmashes of the other projects.

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SpaceX provides update on Starship explosion while fueling for static fire engine test

SpaceX has now posted an update outlining its preliminary conclusions as to the cause of the Starship explosion as the spacecraft was being fueled prior to a static fire engine test on June 18, 2025.

Engineering teams are actively investigating the incident and will follow established procedures to determine root cause. Initial analysis indicates the potential failure of a pressurized tank known as a COPV, or composite overwrapped pressure vessel, containing gaseous nitrogen in Starship’s nosecone area, but the full data review is ongoing. There is no commonality between the COPVs used on Starship and SpaceX’s Falcon rockets.

It remains unclear how long it will take to get that test stand back up and running.

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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

Clickspring – Recreating the ancient engineering that built the Antikythera Mechanism

An evening pause: For background, the Antikythera Mechanism is an archaeological artifact from ancient Greece:

The Antikythera Mechanism is the oldest known scientific computer, built in Greece at around 100 BCE. Lost for 2000 years, it was recovered from a shipwreck in 1901. But not until a century later was its purpose understood: an astronomical clock that determines the positions of celestial bodies with extraordinary precision.

Today’s pause shows how this very complex mechanism, that includes many metal gears, might have been made by hand, without electricity and our modern tools.

Hat tip Cotour.

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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.

June 20, 2025 Quick space links

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.

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Two lunar orbiters spot the crash site of Ispace’s Resilience lander

Resilience crash site on the Moon, as seen by Chandrayaan-2

Scientists using both NASA’s Lunar Reconnaissance Orbiter (LRO) and India’s Chandrayaan-2 lunar orbiter have spotted the crash site for the private commercial lunar lander Resilience, built and launched by the Japanese startup Ispace.

The picture to the right was taken by Chandrayaan-2. As noted at the LRO website showing its photo:

The dark smudge (60.4445°N, 355.4120°E, -2431.6 m elevation ) formed as the vehicle excavated and redistributed shallow regolith (soil); the faint bright halo resulted from low-angle regolith particles scouring the delicate surface.

The lander attempted a soft landing on June 5, 2025, but because its laser rangefinder was unable to gather good data as to its elevation, it did not decelerate properly and was going too fast when its engines tried for a soft landing. It instead crashed.

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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

New nova spotted and now visible to the naked eye

Astronomers have now spotted a brand new nova in the southern hemisphere that has quickly brightened so that is now just visible to the naked eye.

On June 12th (June 12.9 UT), the All-Sky Automated Survey for Supernovae (ASAS-SN) discovered a new 8.7-magnitude stellar object in Lupus. Not long after, Yusuke Tampo, with the South African Astronomical Observatory (University of Cape Town), obtained a spectrum of the “new star” and identified it as a classical nova based on its spectral features and dramatic increase in brightness.

The nova went through a slew of temporary names — AT 2025nlr, ASASSN-25cm, and N Lup 2025 — until receiving its official designation V462 Lupi on June 16th. Since discovery, the nova has brightened rapidly. As of 3 p.m. Eastern Time June 17th, it’s at magnitude 6.1, and visible without optical aid from a dark-sky location. Its rise has been phenomenal when you consider that prior to the explosion, the progenitor star was approximately magnitude 22.3 (in the blue band) according to American Association for Variable Stars (AAVSO) observer Sebastián Otero, who dug up an older image from a photographic plate.

Though in the southern hemisphere, this nova star is also visible in the northern hemisphere to the mid-latitudes. The article at the link provides some details if you wish to try spotting it.

Novae occur when a central heavy white dwarf star robs enough material from its closely orbiting stellar companion. When enough material piles up on the surface of the white dwarf it goes critical, resulting in a thermonuclear explosion strong enough to produce the nova.

Whether the nova will continue to brighten remains unknown, but I guarantee that a plethora of amateur astronomers will watching to find out.

Hat tip to BtB’s stringer Jay.

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The source of a Martian glacial canyon 750 miles long

The source of a Martian glacial canyon 750-miles-long
Click for original image.

Cool image time! The picture to the right, cropped, reduced, sharpened, and brightened to post here, was taken on May 1, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The scientists label this very simply as a “wall on Ausonia Cavis”. Ausonia Cavis — 31 miles long and 20 miles wide at its widest — is one of the many gigantic sinks found in many places on Mars. This particular cliff wall is about 2,000 feet high, though from rim to floor of the sink is closer to 3,000 feet.

The image was likely taken to get a closer look at those gullies flowing down the cliff wall. Previous research of similar cliff walls in this region has found what appears to be seasonal water frost in such gullies, and this image was likely taken to see if more such frost could be spotted here as well.
» Read more

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France government invests big in Eutelsat-OneWeb

According to the satellite company Eutelsat-OneWeb, the French government has now committed more than a billion dollars in investment capital to the company, doubling its stake to almost 30%.

France would more than double its stake in Eutelsat to nearly 30% as part of a $1.56 billion capital raise backed by multiple shareholders, bolstering the French operator’s plans to refresh its OneWeb constellation amid Starlink’s growing dominance.

The funds would be raised in two parts before the end of the year, Eutelsat announced June 19, a day after the French military agreed to buy OneWeb services over 10 years in a deal potentially worth up to one billion euros ($1.15 billion).

OneWeb itself almost went bankrupt until it was saved by cash from a major Indian investor and the government of the United Kingdom. This new deal means that the merged company is largely controlled by France, the UK, and India.

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Chinese pseudo-company Landspace completes static fire test of 1st stage of its Zhuque-3 reusable rocket

The Chinese pseudo-company Landspace today successfully completed a static fire test of 1st stage of its Zhuque-3 reusable rocket, firing all nine engines for 45 seconds.

This lays the groundwork for the first launch attempt of this rocket.

The first Zhuque-3 orbital launch attempt was earlier slated for the third quarter of the year and would carry a prototype of the reusable Haolong cargo spacecraft, designed by the Chengdu Aircraft Design Institute under the Aviation Industry Corporation (AVIC). The test is part of a program for low-cost cargo delivery to the Tiangong space station. Landspace did not provide a timeframe for the launch in its static fire test statement.

It appears increasingly that three different Chinese pseudo-companies are getting close to launching reusable rockets within the next year or so. In addition to Landspace, there is CAS-Space (the rocket division of a government agency) and Space Pioneer. In addition, there five other pseudo-companies doing similar rocket hop tests. All are working under the supervision of the government, which requires them to share data.

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India transfers ownership of SSLV rocket from space agency to government-owned private aerospace company

Capitalism in space: As part of the Modi government’s effort to switch its space industry from something owned and run entirely by its space agency ISRO, it has now awarded the ownership and control of ISRO’s newest and smallest rocket, the SSLV, to the aerospace company Hindustan Aeronautics Limited (HAL).

The company paid about $60 million for the purchase, and the right to build, market and launch it. It hopes to build between 6 to 10 rockets per year, depending on launch demand.

This transfer is not as radical as it appears. Though HAL operates mostly as an independent aerospace company, it is still owned by the government with its board of directors appointed by the president of India. The rocket will thus still be owned and controlled by the government, not a private company.

At the same time, this deal acts to shift power away from the space agency ISRO, which I suspect is the plan: Divvy up ISRO’s assets, which will eventually make it harder for it to block independent operations by private companies. As part of that program, the government has also transferred construction of the larger PSLV rocket from ISRO to a consortium of companies.

Whether this shift can create an independent and competitive rocket industry in India is very unclear. In many ways the country’s strategy so far mimics more China’s pseudo-company approach (where the companies raise investment capital, compete for government and commercial contracts, but are always under the full control and supervision of the government) then it does America’s free enterprise system (where ownership and control resides entirely with the companies, and the government only buys the services it needs from them).

The American model is by far the most successful in encouraging innovation and competition for the least cost. The Chinese model produces some results for less cost, but relatively little innovation. Instead, it copies what Americans do.

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China launches communications satellite

China today successfully launched a communications satellite, its Long March 3B rocket lifting off from its Xichang spaceport in southwest China.

As is usual for its state-run press, no information was provided about the satellite or where the rocket’s lower stages crashed inside China.

The leaders in the 2025 launch race:

76 SpaceX
35 China
8 Rocket Lab
7 Russia

SpaceX still leads the rest of the world in successful launches, 76 to 57.

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