To my readers

I feel obliged to explain, if vaguely, the reason my posting has been relatively light the past few weeks. I have been struggling with health issues that have sucked all the energy out of me. Things have been improving, but for the rest of this week and next Diane will be recovering from knee surgery, and this will require my time above that of the website.

I will continue to report the news stories, including launches, that I think important, but essays might have to wait until things get back to normal at the Zimmerman household.

My apologizes to my loyal readers. I am not making excuses, merely explaining what is going on.

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South Korea’s space bureaucracy attempts to encourage private sector development

South Korea’s space agency, the Korea Aerospace Administration, has announced a new effort to encourage that country’s private sector in developing rockets and satellites.

[A] plan will be established to link the National Space Council, the highest policy decision-making body overseeing government space policy, with the Aerospace Development Policy Review Committee. Systems will also be established for workforce training in aerospace and the designation of a space development mission center.

To establish an aerospace economic ecosystem, the participation of the private sector in the development and utilization of launch vehicles and satellites will be expanded. In the aviation sector, future aircraft technologies, including urban air mobility (UAM), will be secured, and localization of aircraft materials and components will be supported. To encourage smooth research and development (R&D) investments in aerospace corporations, the aerospace fund will be revitalized with improvements to regulations and support for overseas expansion.

Overall, a lot of this sounds like meaningless bureaucratic gobbledygook. The goal might be to expand the private sector, but the program still has the space agency running everything, from its new government-built Nuri rocket to its other satellite development programs.

Nonetheless, the desire to encourage the private sector is good. It could simply be that South Korea’s private sector is not mature enough yet to take the lead, and the agency by this announcement is working to push it forward.

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General Atomics successfully tests fuels to be used in an in-space nuclear propulsion system

The company General Atomics announced yesterday that it has successfully tested the fuels it wants to use in an in-space nuclear propulsion system for transporting ships to the Moon and beyond much faster and more efficiently than is presently possible with chemical engines.

[General Atomics] executed several high-impact tests at NASA’s MSFC in Huntsville, AL. The nuclear fuel was tested with hot hydrogen flow through the samples and subjected to six thermal cycles that rapidly ramped-up to a peak temperature of 2600 K (Kelvin) or 4220° Fahrenheit. Each cycle included a 20-minute hold at peak performance to demonstrate the effectiveness of shielding the fuel material from erosion and degradation by the hot hydrogen. Additional tests were performed with varying protective features to provide further data on how different material enhancements improve performance under reactor-like conditions.

It has been known since the 1960s the nuclear propulsion is more efficient that chemical engines. It can burn for longer time periods at higher levels, thus making it possible to get to other planets more quickly, in some cases bypassing the need to depend on orbital mechanics.

The problem however has been political. Getting these nuclear engines into orbit has been too much of a political hot potato. The fear of such engines and radioactivity, largely irrational, has made it impossible to get them built. NASA is now trying again.

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Japan’s government wants its private sector to do all its future space station work, not its space agency JAXA

In a major shift of power away from its government, the Japanese science and technology ministry is presently drafting a policy that would have that country’s private sector lead all work that Japan does on any of the future commercial private space stations being built, not its space agency JAXA as has been done now for decades.

The draft policy specifies how Japan will be involved with the next space station. According to the draft, “the private sector will have such responsibilities as managing [the new space station], and JAXA will support its use.”

JAXA is currently responsible to the management and maintenance of the ISS and serves as the point of contact for its commercial use. However, the government will select a Japanese private-sector company to be the point of contact for the next space station. When JAXA, research institutes or other companies plan to use the ISS, they will have to contact the next station’s point of contact.

While Japan wants to have one of its own modules on one of the commercial stations, as it presently has on ISS, it appears the government does not want JAXA to lead this project. Instead, it wants Japan’s private sector to run the show by working out its own deals with the private commercial stations. At present the Japanese company Mitsui is partnering with Axiom on its station, so this is likely the first station where a deal could be worked out.

It seems that Japan is trying to poke its private sector out of its doldrums. Right now that sector seems unable to take any action on its own. It sits and waits for guidance from the government before acting, and even then acts timidly, waiting to see if the government approves of each step. What the Japanese government now wants instead is some independent action, not linked to government policy.

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Trump picks Janet Petro of Kennedy to be acting NASA administrator, not Jim Free of headquarters

In a surprise move, the Trump administration announced yesterday that the expected person to take over as acting administrator of NASA until Jared Isaacman is approved by the Senate would not be Jim Free. the present associate administrator at NASA headquarters, but Janet Petro, who is presently director of the Kennedy Space Center.

NASA had so much assumed Free had the job that it had already listed him as acting administrator today on the NASA webpage.

There has of course been speculation as to why Trump made this unexpected choice. My guess is that Trump wants to reduce significantly the size of NASA headquarters, and thus wants someone from outside to run it for the present. Petro has been at Kennedy since 2007. Before that she was in the private sector.

Free has been a working out of DC for several years, and thus has stronger ties to the workforce there.

The decision also makes it clear to the NASA bureaucracy who is in charge. Decisions will no longer be made by that bureaucracy without strong input from Trump.

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Anna Lapwood – Hans Zimmer’s Cornfield Chase & Saint-Saëns’ Sinfonie #3 Organ finale

An evening pause: Performed live 2024. Seem celebratory enough for Inauguration Day.

Hat tip Alton Blevins, who also needs to clean out his full inbox so that he can receive emails. It has been full now for several weeks, and all emails to him thus bounce.

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Meandering channel inside a larger glacial-filled valley

A meandering channel
Click for original image.

Cool image time! The picture to the right, rotated, cropped, reduced, and enhanced to post here, was taken on October 9, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The scientists label this “Channel in North Warrego Valles,” referring to the meandering channel on the left side of the picture. Note the stippled look of the surrounding terrain. This surface appears to be brain terrain, an as-yet unexplained feature on Mars that is always associated with near-surface ice features.

This location is at 40 degrees south latitude, placing it in the mid-latitudes where lots of glacial features are often found on Mars. Thus, it shouldn’t be surprising to find at this location brain terrain, or a meandering channel. The location however is a bit unusual, and reinforces once again that there is a lot of near-surface on Mars, readily available, as long as you are above 30 degrees latitude north or south.
» Read more

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Did a high altitude Grasshopper rocket test last week by China fail?

According to this report from Space News, a high altitude grasshopper-type vertical ascent-descent rocket test that China attempted on January 18, 2025 appears to possibly have been a failure.

Longxing-2 is thought to be a test article for the Long March 12A reusable launcher being developed by the Shanghai Academy of Spaceflight Technology (SAST). The rocket was designed to replicate the first stage of a reusable flight, reaching around 75 kilometers before performing a reentry burn and making a powered descent and splashdown into the Yellow Sea.

Amateur footage captured from near the launch area showed the rocket rise very slowly from the tower and perform an ascent phase with no apparent anomalies. The test was intended to build on a successful 12-kilometer-altitude vertical takeoff, vertical landing (VTVL) test performed in June 2024.

SAST published results and footage from the June test, but has so far remained silent on the 75-km attempt, being yet to publish any results or details of the flight more than 24 hours after liftoff. The lack of official updates raises questions about the success of the test, which could indicate challenges during reentry or landing phases.

It is also possible that the soft splashdown landing was a success and China is simply being its normal secretive self and refusing to release any information.

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Chinese pseudo-company completes launch

The Chinese pseudo-company Galactic Energy today completed its first launch in 2025, its solid-fueled Ceres-1 rocket lifting off from the Jiuquan spaceport in northwest China. It place five satellites in orbit, four for weather and one for Earth observation.

Meanwhile SpaceX yesterday had to scrub a Starlink launch from Vandenberg yesterday at T-11 seconds because an airplane had entered the launch range by mistake. It will try again in a few hours [UPDATE: Now scrubbed till tomorrow], and then follow up with another Starlink launch just after midnight tonight from Kennedy.

The 2025 launch race:

8 SpaceX
4 China
1 Blue Origin

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A 360 degree view from Perseverance

Overview map
Click for interactive map.

Andrew Bodrov from Mars360 has created another 360 degree mosaic using 854 high resolution images taken by the rover Perseverance when it stood at Lookout Hill, at the top of the rim of Jezero Crater. I have embedded it below. From his announcement:

The panorama provides a complete view of Perseverance, allowing you to examine its intricate design in incredible detail. Every component is visible, showcasing the engineering brilliance that powers this groundbreaking mission.

The Martian terrain stretches out around the rover, with its tracks cutting a path into the distance. The Jezero Crater rim, visible on the horizon, features rugged rock formations and textured sands that add depth to this remarkable scene.

The overview map to the right provides the context. The view begins by looking south, at the crater rim. If you rotate to the left you will see the tracks of Perseverance, indicating its previous travels, and then the rim to the north. Next the view looks outside the crater to the west.
» Read more

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