An evening pause: Performed live 2006.
Hat tip Alec Gimarc, who adds these details: “Chris Rea passed away last week. About our age. Over 30 studio albums. British. Very much an acquired taste. Been listening to him for nearly 40 years. Smooth, smoky voice. He specialized in slide guitar. Road to Hell is probably his greatest hit.”
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.
Click for original image.
Cool image time! The picture to the right, rotated, reduced, and sharpened to post here, was taken on November 24, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).
As is proper, the science team labels this vaguely as a “flow obstacle in lobate debris apron.” The obstacle is that small peak. The lobate debris apron is the material flowing past, resembling in almost all details what a glacier looks like on Earth. The scientists use vague terms because they don’t want to trap themselves into a conclusion before it is confirmed.
Nonetheless, based on all the data MRO and other Mars orbiters have been gathering for the past decade, we are almost certainly looking at near-surface ice flowing downhill and past that peak.
The white dot in the overview map above marks the location, on the western end of the 2,000-mile-long mid-latitude strip I label “glacier country,” because practically every image from this region shows features such as this.
The arrow in the inset shows the direction of the downhill grade, dropping from 2,000 to 3,000 feet from the surrounding plateau. The peak itself rises about 130 feet above the flow on the uphill side, but 650 feet above on the downhill side. Apparently the flow piled up somewhat as it hit the peak.
That flow however is likely inactive at this time. Though the researchers have repeatedly monitored the many glacial flows they have found on Mars in the decade since MRO arrived in Mars orbit, so far I have heard of no example showing any movement. And that covers about five Martian years.
These images do prove one thing: Mars is not dry. It has plenty of water near the surface, though locked in ice.
Lockheed Martin and General Electric announced this week that they have successfully tested a rotating-detonation engine using complimentary technology developed by each company.
GE Aerospace and Lockheed Martin completed a series of engine tests demonstrating the viability of a liquid-fueled rotating detonation ramjet for use in hypersonic missiles, the first initiative between the companies under a broader joint technology development arrangement.
This fuel-efficient rotating detonation ramjet promises to fly missiles faster—including at hypersonic speeds—and farther while decreasing costs compared to other ramjet options. … The rotating detonation ramjet combusts fuel and air through detonation waves instead of the traditional combustion methods used in ramjet engines today. This propulsion system generates high thrust for super- and hypersonic speeds to engage high-value, time-sensitive targets, with a smaller engine size and weight that boosts range.
In October Lockheed Martin’s venture capital division announced it was investing in a startup, Venus Aerospace, that was developing its own rotating detonation engines. One now wonders, based on today’s story, if that investment might have been a purchase of the technology itself.
Either way, the Pentagon’s program to develop hypersonic missile capability has blossomed in the past two years, since it stopped trying to build the technology itself and has instead been hiring private aerospace companies to do the research for it. Ain’t capitalism wonderful?
The European Space Agency (ESA) this week hosted the leaders of the China National Space Administration (CNSA) in Paris, the first such joint meeting since 2017.
The meeting was co-chaired by ESA Director General Josef Aschbacher and CNSA Administrator Shan Zhongde. Both ESA and CNSA had unique achievements to share and discuss since the last time the heads of agencies met in person.
Both highlighted joint successes in space science, notably the Tianguan (Einstein Probe) launch with ESA hardware, and progress on the joint Smile mission, set to launch this year. Similarly, the two sides addressed the successful Chang’e-6 mission carrying ESA’s NILS instrument, ESA’s first experiment on the lunar surface. In the field of telemetry and tracking, both looked back on their long-term cooperation in supporting science and exploration missions. In discussing their respective space safety and Earth observation related programmes, the importance of cooperation to protect our planet and climate was recognised on both sides.
It was discussed, that building past progress, both sides in their respective institutional contexts would explore potential opportunities for further collaboration in areas such as Earth and space science.
Let me translate: We in Europe have found that our cooperative Soviet-style government-run projects with NASA (ISS, Mars Sample Return, and Lunar Gateway) are going away, and we need to find some other authoritarian nation we can partner with.
You see, the bureaucrats in Europe like their Soviet-style government-run space program, and are actually offended that the U.S. is shifting from that approach to the capitalism model, an independent industry run by private enterprise. Moreover, these bureaucrats at ESA are finding their own political support dwindling within the ESA’s member nations, many of whom are adopting the same private industry approach as the U.S.
Thus, rather than embrace freedom, competition, and capitalism — the principles that once made Europe great — they look to China now to help fund their government projects. How so very governmental of them!
It is likely some space projects will come of this, but if the U.S. remains steadfast in support of freedom and private enterprise, it will flow like a tidal wave over anything ESA and China develop.
China today successfully placed a classified military remote sensing satellite into orbit, its Long March 2C rocket lifting off from its Jiuquan spaceport in northwest China.
China’s state-run press provided no update on where the rocket’s lower stages, using very toxic hypergolic fuels, crashed inside China. The story at the link, from China’s military, did provide this information about the satellite:
Developed by China Academy of Space Technology under China Aerospace Science and Technology Corporation (CASC), the satellite will be used for land planning and disaster prevention and mitigation. The launch is part of the Algeria remote sensing satellite system program, a joint project between China Great Wall Industry Corporation, a subsidiary of CASC, and the Algerian Space Agency. Signed in July 2023, the agreement includes two optical remote sensing satellites, ground systems, training, and related support services.
The 2026 launch race:
6 SpaceX
3 China
An Indian startup, Aule Space, has now raised $2 million in seed money to begin development of a robot servicing spacecraft it intends to call “jetpacks”, designed to attach to satellites and provide them fuel and power.
The seed funding will allow Aule Space to being work on a demonstration mission planned for launch next year to test its docking capabilities. That will involve two satellites, each weighing about 30 kilograms, but Panchal said one option is to instead use an orbital transfer vehicle as the client for the docking demonstration.
The 11-person company, which plans to grow to 20 people by the end of the quarter, is working on ground tests of its rendezvous and docking technology. It has access to facilities used by the Indian space agency ISRO for testing SPADEX, a docking demonstration mission flown a year ago.
This “jetpack” concept is very similar to Northrop Grumman’s Mission Extension Vehicles (MEV), several of which have already flown and extended the life of several satellites.
Aule is exactly the type of Indian satellite startup that India’s rocket startups, Agnikul and Skyroot, are being built to serve. The problem is that all of these startups, both satellite and rocket, are literally all startups. None has flown. India’s private space sector won’t really take off until its private rocket companies get off the ground, as its government space agency, ISRO, has done a very poor job launching its PSLV and SSLV rockets (both designed for smallsats). The PSLV has failed on its last two launches, and the SSLV has been in limbo now for years.
SpaceX’s Endeavour capsule has safely splashed down and been recovered off the coast of California, returning the four Expedition-11 astronauts several weeks early from ISS due to an as-yet undisclosed medical issue with one astronaut.
Crew-11 returned home about a month earlier than planned because of a medical concern teams are monitoring with one of the crew members, who remains stable. Due to medical privacy, it is not appropriate for NASA to share more details about the crew member. Prior to return, NASA previously coordinated for all four crew members to be transported to a local hospital for additional evaluation, taking advantage of medical resources on Earth to provide the best care possible.
Following the planned overnight hospital stay, the crew members will return to NASA’s Johnson Space Center in Houston and undergo standard postflight reconditioning and evaluations.
This hospital visit for all four astronauts is simply a cover to hide which astronaut has the medical issue. At some point this information must be revealed, simply because it impacts how future space travel will be planned.
SpaceX’s Endeavour Dragon capsule undocked from ISS late this afternoon, carrying its four Expedition-11 crew who are coming home a few weeks early because of a medical issue with one crew person.
Live return coverage will resume at 2:15 a.m. Thursday, Jan. 15 on NASA+, Amazon Prime, and the agency’s YouTube channel until Dragon splashes down at approximately 3:41 a.m. off the coast of California and crew members are safely recovered.
It has been speculated by several sources, based on several NASA updates, that the crewman with the medical issues is Mike Finke, 58, who had flown in space three times previously.
Note that the only reason most major news sources are covering this crew return is because of the medical emergency. Normally, SpaceX has made this process so routine few pay attention any longer.
Click for NTSB report.
Despite previously identifying stress fractures in a part that held the engines to the wing on three different MD-11 airplanes, Boeing did nothing to replace the part, and so fifteen people died when the engine fell off a UPS cargo plane at take-off in November 2025.
The sequence of images to the right, which I have annotated to show the engine breaking free from the wing, comes from the NTSB preliminary investigation report [pdf]. From the article at the link above:
In an update to its ongoing investigation into the crash of UPS Flight 2976, the National Transportation Safety Board [NTSB] said its team found fatigue cracking and overstress failure across much of the bearing race inside the area that attached the plane’s left engine to its wing. NTSB investigators then went back into Boeing service data and confirmed the design of the bearing assembly was consistent with the original design of that part.
[A] Boeing Service Letter dated Feb. 7, 2011 [and found by the NTSB], told operators the company was aware of four previous bearing race failures on three different airplanes. Boeing had seen the fractures of the bearing race, with the parts splitting in two and moving out of place. However, Boeing told operators its review of the bearing failure “would not result in a safety of flight condition.”
Boeing said further regular inspection of MD-11 airplanes would include a look at this bearing assembly, something scheduled for 60-month service intervals. And while Boeing used that service letter to discuss a new bearing assembly configuration, the installation of the original parts “was not prohibited.”
The plane itself had been built by McDonnell-Douglas, prior to its merger with Boeing. Nonetheless, Boeing engineers and managers were aware of this issue and did nothing to inform the owners of this plane so they could take action. In fact, Boeing apparently continued to ship out the original parts to airlines as replacement spares.
This is another example of a serious quality control problem at Boeing, where engineers no longer view serious engineering failures as serious engineering failures.
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.
Axiom’s module assembly sequence
When Axiom announced in September 2025 that Redwire would be building the solar panels for the first module of its space station, dubbed the PPTM, it also said that module would launch in late 2027, which was a delay of one year from the original launch date of 2026.
That schedule has now apparently been delayed again. In an interview yesterday, the company’s vice president of human spaceflight, former NASA astronaut Peggy Whitson, indicated the launch was now targeting 2028.
Plans call for the initial Axiom Station to be comprised of two modules, the PPTM — short for Payload Power Thermal Module — and a habitat module. The PPTM, which is to be shipped shortly to Houston for final assembly and integration, is slated to be launched in early 2028, with the second module following just months later. From there, Axiom aims to swiftly begin welcoming crew, Peggy Whitson, the company’s vice president of human spaceflight, told me in an interview.
This schedule almost guarantees that the Axiom station will not detach from ISS as quickly as originally intended. PPTM has a large hatch opening connecting it to ISS, allowing for the easy transfer of much of the research racks held on ISS. Before Axiom can become a free-flying station that ISS equipment must be moved, a process that will take time, likely months. To get it done the company will probably have to also attach its second habitation module so that crews can arrive and begin this transfer process.
In other words, Axiom’s schedule margins for getting its station launched, docked to ISS, loaded with ISS equipment, and then separated before ISS retires in 2030 are shrinking. It can ill afford further delays.
Below are my rankings of the five American space stations presently under development. Note that I now consider Axiom and Starlab tied for second.
» Read more
SpaceX today successfully placed another 29 Starlink satellites into orbit, its Falcon 9 rocket lifting off from Cape Canaveral in Florida.
The first stage completed its 13th flight, landing on a drone ship in the Atlantic.
The 2026 launch race:
6 SpaceX
2 China
Link here. First, it appears construction of a second launch tower in Florida is about to begin. Second, the launchpad needed for the next orbital test flight of Starship/Superheavy is nearing completion.
Not only does this suggest the next test flight is only a matter of weeks away, the first launch out of Florida is not far in the future.
The European Space Agency (ESA) and the Luxembourg startup ClearSpace yesterday announced a new demo mission to test autonomous rendezvous and proximity maneuvers, scheduled to launch in 2027.
PRELUDE aims to validate autonomous rendezvous and proximity operations in real flight conditions. The mission will test high-accuracy tracking, navigation and maneuvering using a combination of vision-based and complementary sensors feeding onboard algorithms and autonomous, fault-tolerant guidance, navigation and control (GNC) software. The goal is to demonstrate full freedom of movement and safe, repeatable maneuvers around another spacecraft.
Sounds good, eh? Not so fast. ClearSpace has had a bunch of these missions proposed, and none has yet flown. In 2019 ClearSpace won an ESA contract to de-orbit an old piece of space junk by 2025. In 2023 however that mission was stymied when that space junk, a payload adapter from a 2013 launch of Vega rocket launch, was hit by another piece of space junk.
Both ESA and ClearSpace apparently had difficulties re-designing the mission. In 2024, the ESA forced a major shake-up in ClearSpace’s management and missions, with the established company OHB taking over the startup. Subsequently the mission was redesigned to de-orbit a different defunct satellite, but delayed until 2029.
In 2024 the United Kingdom gave ClearSpace and Japan’s Astroscale a contract to de-orbit two satellites in ’26. It is however not clear at this time whether that mission will launch as planned.
This new PRECLUDE mission is interesting in that it will test the rendezvous and proximity technology that ClearSpace must have for all the other de-orbit missions. In other words, those other missions were never possible, because ClearSpace didn’t have the capability to do them. This new mission appears designed to develop that capability.
I ask: Why wasn’t PRECLUDE scheduled first, in the first place? That it wasn’t reflects very badly on both ClearSpace and the ESA.
A small prototype re-entry demonstration capsule, built by the Spanish startup Orbital Paradigm and dubbed the Kestrel Initial Demonstrator (KID), apparently survived for a short period the failure of the third stage of India’s PSLV rocket early this week.
According to an Orbital Paradigm press release, the survival of its little demonstrator came as a surprise. “When we understood that the launch was non-nominal it was a bit of a hit for us,” explained Orbital Paradigm CEO Francesco Cacciatore. … “I think the launch livestream was still ongoing when the team saw that we had 190 seconds of flight data transmitted and received. We needed a few minutes to realize it was real data and not a glitch.”
…“KID was tested beyond its design envelope, and it worked. Separation, power-on, and data transmission, even after reentry, all performed well despite degraded conditions,” explained the company in a 13 January update. “Based on initial analysis, it seems that we achieved 4 out of 5 launch milestones, albeit through an off-nominal profile. The failure to deliver customers’ data prevents us from declaring the mission a success.”
The company considers the mission a failure because it did not get the re-entry data back that it really needed. It says however it is moving forward on a more advanced demonstrator it hopes to launch in 2027. I suspect it will not hire India’s space agency ISRO to launch it.
The Space Force yesterday announced it has switched rocket companies for its next GPS satellite launch, taking the launch away from ULA and its Vulcan rocket and giving it to SpaceX.
SpaceX could launch the GPS III Space Vehicle 09 (SV09) within the next few weeks, as the satellite was entering the final stages of pre-flight preparations. As part of the swap, United Launch Alliance (ULA) will instead launch the third of the next generation of Global Positioning System satellites. The GPS III Follow-on (GPS IIIF) SV13 satellite was originally scheduled to launch on a Falcon Heavy, but will now fly on Vulcan.
“SV09 and SV13 were traded between ULA and SpaceX to get capability to orbit as soon as possible, for the same reason as the prior swap, which resulted in the last GPS launch in May 2025,” the spokesperson said in a statement. “The trade results in an overall net cost savings to the government and again demonstrates our sustained commitment to moving at speed to deliver combat-credible capabilities on orbit to meet warfighter needs.”
While at first glance it appears ULA has lost nothing, the military’s decision here bodes ill for the company. First, it indicates ULA has been unable to get Vulcan ready on time, forcing the Space Force to look to someone who could.
Second, this is the second time the Pentagon has taken a launch from ULA for these reasons. Increasingly it appears the military is losing patience with ULA’s inability to launch on time. For example, in awarding its most recent set of nine launches, it gave them all to SpaceX, bypassing ULA entirely.
In the past the Space Force tolerated ULA’s delays and high launch cost in order to guarantee the military had more than one launch provider. It now appears it is placing more importance on reliability and cost savings. And as I say, this bodes ill for ULA, which has not done a good job of providing either.
NASA and Department of Energy have signed an agreement to develop nuclear power stations for NASA lunar base, and are targeting 2030 for placing a nuclear reactor on Moon.
NASA, along with the U.S. Department of Energy (DOE), announced Tuesday a renewed commitment to their longstanding partnership to support the research and development of a fission surface power system for use on the Moon under the Artemis campaign and future NASA missions to Mars.
A recently signed memorandum of understanding between the agencies solidifies this collaboration and advances President Trump’s vision of American space superiority by deploying nuclear reactors on the Moon and in orbit, including the development of a lunar surface reactor by 2030. This effort ensures the United States leads the world in space exploration and commerce. [emphasis mine]
Wanna bet? I’m laying odds that this joint government effort will end up being delayed and overbudget. In fact, the highlighted phrase suggests this work is already experiencing delays and budget overruns. Why else make a big deal about “a renewed commitment”?
An evening pause: It isn’t what you expect. More from this group here.
Hat tip Mike Nelson.
This a cappella group performs Beethoven’s 5th Symphony. 👏🏻👏🏻👏🏻
Credit: HotPlaysMusic YT pic.twitter.com/GB6NRQaOvs
— Juanita Broaddrick (@atensnut) December 18, 2025
China finally entered the 2026 launch race today with two launches from two of its spaceports.
First, it placed a classified remote sensing satellite into orbit, its Long March 6A rocket lifting off from its Taiyuan spaceport in northeast China.
No word on where the rocket’S lower stages, using very toxic hypergolic fuels, crashed inside China.
About an hour later it launched the 18th group of Guowang (also Satnet) satellites into orbit, its Long March 8A lifting off from its coastal Wenchang spaceport in south China.
Though the lower stages of this rocket fell in the ocean, they did so in the territorial waters of the Philippines, forcing its government to issue a warning to its citizens.
Though China’s state-run press provided no information about the number of Guowang satellites launched, all previous launches using the Long March 8A placed nine in orbit. Based on this guess, this internet-of-things constellation now has 137 satellites in orbit out of a planned 13,000.
The 2026 launch race:
5 SpaceX
2 China
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.
Click for original image.
Cool image time! The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on November 27, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).
The science team labels this “exposed crater floor materials”. While properly vague, that hardly suffices. This image could easily fall into my “What the heck?!” category of Martian geology that is difficult to understand, no less explain.
The color strip suggests that dust dominates near the top and bottom, though dust is also present in the middle. The patches with the bluish tint in the middle suggests these lighter swirls and patches are bedrock.
Of course, none of that explains the weird shapes of these patches, nor why they exist at all.
Before delving into those weird shapes, we must note the two vertical black strips to the right of the color strip, indicating a gap in data. Such gaps have been appearing more frequently of late, suggesting MRO’s age, almost a decade in orbit around Mars, is beginning to show itself. A failure in 2023 in one filter band of the high resolution camera already leaves blank the color swath in black and white images. These new blank strips indicate further issues, warning us that we must be prepared for the loss of this camera and orbiter in the somewhat near future.
» Read more
Reports from China’s state-run press today and yesterday claim that a pseudo-company, CAS Space (wholly owned by a government agency) has successfully completed the first test flight and parachute recovery of a new small scale suborbital reusable spacecraft dubbed PH-1.
The vehicle lifted off at about 4 pm and reached an altitude of roughly 120 kilometers, passing the Karman line — commonly regarded as the boundary between Earth’s atmosphere and outer space — before descending back to Earth. After re-entering the atmosphere, its recoverable payload cabin deployed a parachute at around 10 km and landed smoothly at a designated site, the company said.
CAS Space said the test validated key technologies, including re-entry deceleration, parachute recovery and precision landing control. Engineers also assessed the performance of critical components during the flight.
A handful of images were released yesterday, but none showed the recovered capsule or its landing.
It is probably that this test was as successful as China’s press claims. It is also possible that this reporting has been carefully designed to hide aspects of the flight that were a failure.
Once developed, CAS Space claims the spacecraft, also dubbed Lihong-1, could be used to provide experiments about 300 seconds of weightlessness. This is not much longer than the periods of weightlessness produced when flying in a “vomit comet” airplane. Moreover, this spacecraft appears too small for manned flights. A larger spacecraft would have to be developed for that purpose.
Hat tip to BtB’s stringer Jay for the link to the images.
For more than two decades, from 1999 to 2020, the Search for Extraterrestrial Intelligence (SETI) project asked millions of people worldwide to loan it the use of their computers so the project to could analyze twelve billion signal detections that were of interest.
After 10 years of work, the SETI@home team has now finished analyzing those detections, winnowing them down to about a million “candidate” signals and then to 100 that are worth a second look. They have been pointing China’s Five-hundred-meter Aperture Spherical Telescope, a radio telescope referred to as FAST, at these targets since July, hoping to see the signals again.
Though the FAST data are not yet analyzed, [computer scientist and project co-founder David Anderson] admits he doesn’t expect to find a signal from ET.
At the link the SETI team outlined the many reasons, all quite reasonable, for the failure to detect any obvious signals from alien civilizations. The universe is vast, they only looked at a very tiny slice, the variations of signals are many, and the amount of data was still so gigantic analyzing it was endlessly time-consuming. Moreover, they might have been looking at the wrong wavelengths, and there is even the possibility that advanced civilizations simply don’t broadcast at any wavelengths.
Nonetheless, the project was not a failure. It showed it was possible to use a lot of home computers to create the equivalent of a super-computer. The technology and volunteer system it developed has since been used by other scientists on projects like looking for clouds on Mars and studying galaxy types.
The big question remains unanswered however. Considering the numbers of stars in the galaxy, and the recent data that shows most have planets, it seems strange that there have been so few candidate detections, and even these are questionable. Could it actually be the case that we are the first sentient intelligence species in the Milky Way?
There always has to be a first. That humanity might be that first is a mind-blowing thought.
The Starlab design in 2025. Click
for original image.
The Japanese company Mitsubishi has now signed an agreement with the consortium building the large single module Starlab space station that will launch on Starship, reserving part of that station for the company’s own use while also increasing its financial investment in the project.
Starlab Space LLC today announced that Mitsubishi Corporation has reserved and pre-purchased capacity on Starlab’s commercial space station, becoming a foundational customer while simultaneously increasing their investment in the company and joining Starlab’s Board of Directors through representative Issei Shinohara.
The expanded partnership includes acquisition of usage rights for designated payload volume and utilization of on orbit laboratory facilities on Starlab, positioning Mitsubishi to accelerate space-based research opportunities for Japanese institutions. This customer commitment is accompanied by an expanded equity partnership that brings additional investment to support Starlab’s development.
Mitsubishi had in April 2024 already joined the Starlab partnership, though almost no details were announced at that time. Today’s announcement provides those details. It also appears Mitsubishi is bypassing Japan’s space agency JAXA, which in the past always ran such international projects. Instead Mitsubishi will directly “support Japanese space development objectives while contributing to advancements in areas such as life sciences research, advanced materials development, and next-generation manufacturing technologies.” In other words, it is telling JAXA to jump in the lake. It can do this better without that government third party, which by the way has not been very effective in recent years.
This deal continues Starlab’s aggressive momentum in recent months. Though Axiom is still listed above it in my rankings below of all the American space stations under development, I now consider the two essentially tied for second.
» Read more
Portugal yesterday become the 60th nation to sign the Artemis Accords, according to an announcement posted by NASA administrator Isaacman on X.
In October 2025 a Latvia government report had indicated that it had signed the accords, making it the 60th nation in this American alliance, but Isaacman’s announcement did not include it.
Thus, Portugal is the 60th nation, with this the full and corrected list: Angola, Argentina, Armenia, Australia, Austria, Bahrain, Bangladesh, Belgium, Brazil, Bulgaria, Canada, Chile, Colombia, Cyprus, Czech Republic, Denmark, Dominican Republic, Ecuador, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, India, Israel, Italy, Japan, Liechtenstein, Lithuania, Luxembourg, Malaysia, Mexico, the Netherlands, New Zealand, Nigeria, Norway, Panama, Peru, Poland, Portugal, Romania, Rwanda, Saudi Arabia, Senegal, Singapore, Slovakia, Slovenia, South Korea, Spain, Sweden, Switzerland, Thailand, the Philippines, the United Kingdom, the United Arab Emirates, the Ukraine, the United States and Uruguay.
I suspect Latvia will soon make it official, especially because its neighbors, Estonia and Lithuania, have already signed. These three former Soviet vassal states try to work together as this reduces the Russian threat.
Portugal’s signing means practically all of Europe is now on board.
Damage to Orion heat shield caused during re-entry in 2022,
including “cavities resulting from the loss of large chunks”
In a tweet yesterday afternoon, NASA administration Isaacman essentially endorsed the decision of the NASA managers and engineers in its Artemis program who decided they could live with the engineering issues of Orion’s heat shield (as shown in the image to the right) and fly the upcoming Artemis-2 mission around the Moon carrying four astronauts with that same heat shield design.
Isaacman’s statement however suggests to me that he is not looking at this issue as closely as he should.
Human spaceflight will always involve uncertainty. NASA’s standard engineering process is to identify it early, bound the risk through rigorous analysis and testing, and apply operational mitigations that preserve margin and protect the crew. That process works best when concerns are raised early and debated transparently.
I appreciate the willingness of participants to engage on this subject, including former NASA astronaut Danny Olivas, whose perspective reflects how serious technical questions can be addressed through data, analysis, testing, and decisions grounded in the best engineering judgment available. [emphasis mine]
The highlighted sentence is fundamentally incorrect. » Read more
An evening pause: Accompanied by the André Rieu orchestra and Charis Laurijsen & Panos Dimakis.
Hat tip Judd Clark.
