Tag: China

China launches technology test satellite

10:27 am

China today successfully launched a technology test satellite, its Long March 4C rocket lifting off from its Xichang spaceport in southwest China.

As is usual for China’s state-run press, little information about the satellite was released. The most information any article provided was this:

The satellite, designed and built by the Innovation Academy for Microsatellites under the Chinese Academy of Sciences in Shanghai, will measure and survey space environmental elements and test new technologies.

Nor did that state-run press provide any information about where the rocket’s lower stages, using very toxic hypergolic fuels, crashed inside China.

The leaders in the 2025 launch race:

84 SpaceX
36 China
10 Rocket Lab
7 Russia

SpaceX still leads the rest of the world in successful launches, 84 to 62.

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China releases images of Earth and Moon, taken by its Tianwen-2 asteroid probe

9:40 am

Tianwen-2 images of the Earth and the Moon
For original images go here and here.

According to a report today in China’s state-run press, its Tianwen-2 asteroid sample return spacecraft is operating normally, and has successfully taken pictures of both the Earth and the Moon to test its instrumentation.

Those images are to the right, cropped, reduced, and sharpened to post here.

The CNSA [China National Space Administration] said that the narrow-field-of-view navigation sensor equipped on the probe recently captured the images of Earth and the moon, demonstrating good functional performance.

The images released include a photograph of Earth obtained by Tianwen-2 when it was approximately 590,000 kilometers away from the planet, as well as a new photograph of the moon captured when it was about the same distance from the moon. After the images were transmitted back to the ground, they were processed and produced by scientific researchers.

The Tianwen-2 probe has currently been in orbit for over 33 days, at a distance from Earth exceeding 12 million kilometers, and it is in good working condition, the CNSA said.

The probe will take about a year to reach asteroid Kamo’oalewa, where it will fly in formation studying it for another year, during which time it will attempt to grab samples by two methods. One method is a copy of the touch-and-go technique used by OSIRIS-REx on Bennu. The second method, dubbed “anchor and attach,” is untried, and involves using four robot arms, each with their own drill.

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

10:12 am

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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China launches communications satellite

9:20 am

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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Ground-based imagery now suggests China has completed a docking and undocking of two robotic servicing satellites

10:28 am

According to ground-based imagery by the commercial company S2A, China’s Shijian-21 and Shijian-25 robotic servicing satellites appear to have completed a docking and undocking on June 13 and June 14, 2025.

China’s Shijian-21 and Shijian-25 satellites had been moving toward each other in geosynchronous orbit, around 22,236 miles (35,786 kilometers) above the equator, Spacenews reported on June 6. And now the pair appear to have had a brief first encounter, according to observations from the ground.

Optical tracking by the space situational awareness firm s2a systems shows a close approach between the two on June 14, with the pair, at times, virtually unresolvable from the other. This suggests that Shijian-21 and Shijian-25 made at least a test-run close approach and may have even performed a docking and undocking test.

You can see video of the first apparent docking here.

Shijian-21 was launched in 2021, and was used to grab a defunct Chinese geosynchronous satellite and tug it to a graveyard orbit. Shijian-25 was launched in January 2025 to test robotic servicing of satellites. These maneuvers with Shijian-21 appear to be part of those tests.

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China launches science satellite to study Earth’s electromagnetic fields

9:34 am

China today successfully launched a science satellite built in partnership with Italy and designed to study the interaction of the Earth’s atmosphere with its electromagnetic fields, its Long March 2D rocket lifting off from its Jiuquan spaceport in northwest China.

No word on where the rocket’s lower stages crashed inside China. As for the satellite:

With a designed lifespan of six years, the satellite is equipped with nine payloads, including an electric field detector co-developed by China and Italy, as well as a high-energy particle detector developed by Italy. It will carry out quasi-real-time monitoring of global electromagnetic fields, electromagnetic waves, the ionosphere and the neutral atmosphere, detecting electromagnetic anomalies caused by geological and human activities, as well as monitoring thunderstorm and lightning activity, according to CNSA.

The leaders in the 2025 launch race:

74 SpaceX
34 China
8 Rocket Lab
6 Russia

SpaceX still leads the rest of the world in successful launches, 74 to 55.

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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.

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China launches another set of satellites for one of its giant internet constellations

8:17 pm

China earlier today successfully launched the sixth set of satellites for the Thousand Sails internet constellation, its Long March 6A rocket lifting off from its Taiyuan spaceport in northern China.

Very little information appears available about this specific payload. No word also was released about where the rocket’s lower stages and four strap-on boosters crashed inside China.

The leaders in the 2025 launch race:

69 SpaceX
33 China
7 Rocket Lab
6 Russia

SpaceX still leads the rest of the world in successful launches, 69 to 53.

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Chinese pseudo-company completes successful hop test of rocket

12:04 pm

YXZ-1 completing soft splashdown vertically
YXZ-1 completing soft splashdown vertically.
Click for movie.

The Chinese pseudo-company Space Epoch (also called SEpoch) announced today a successfully hop test yesterday where its prototype YXZ-1 grasshopper-type test prototype completed a vertical launch to an altitude of about 1.5 miles, shut down its engines, then relit them to achieve a soft splashdown over water.

The test article used thin-walled stainless steel and had a diameter of 4.2 meters, a total height of 26.8 meters and a takeoff mass of about 57 tons, according to Space Epoch. The test lasted 125 seconds and reached around 2.5 kilometers in altitude. The test article used Longyun methane-liquid oxygen engines provided by [pseudo]-commercial firm Jiuzhou Yunjian (JZYJ).

Sepoch says the test has laid a solid foundation for the first full flight of the YXZ-1, also known as Hiker-1 in English, later this year.

Without question China’s pseudo-companies as well as its official state space divisions are aggressively pursuing reusable rockets, far more aggressively than any companies (other than SpaceX) in the west. There are at least nine Chinese pseudo-companies or government agencies testing rockets that can land vertically (Space Epoch, Landspace, Deep Blue, Shanghai Academy of Spaceflight Technology, Chinese Academy of Sciences, Space Pioneer, Ispace, Galactic Energy, Linkspace), with eight having attempted hop tests with mixed results.

In the west, only SpaceX is flying reusable rockets. Blue Origin’s New Glenn is supposed to be reusable, but it has only launched once and on that flight its first stage failed to land successfully. The company has only done hop flights with its small suborbital New Shepard spacecraft. Rocket Lab is building its reusable Neutron rocket, but it also has never done any hop tests with that rocket. Stoke Space plans a completely reusable rocket, with the second stage returning as well, and has done one short hop test of a prototype of that stage. Other rocket companies are designing or developing such rockets, but none have done any hop tests.

In general China’s rocket industry appears far ahead in this race.

Hat tip to BtB’s stringer Jay.

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China launches classified satellite

10:02 am

China today successfully launched a classified Earth observation satellite to do “national land surveys, environmental management and other fields,” its Long March 4B rocket lifting off from its Jiuquan spaceport in northwest China.

No word on where the rocket’s lower stages, which use very toxic hypergolic fuels, crashed inside China.

The leaders in the 2025 launch race:

65 SpaceX
32 China
6 Rocket Lab
6 Russia

SpaceX still leads the rest of the world in successful launches, 65 to 51.

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China launches its first asteroid sample return mission

12:28 pm

China today successfully launched Tianwen-2, its first mission attempting to return a sample from a near Earth asteroid, its Long March 3B rocket lifting off from its Xichang spaceport in southwest China.

Video of the launch can be found here. The probe will take about a year to reach asteroid Kamo’oalewa, where it will fly in formation studying it for another year, during which time it will attempt to grab samples by two methods. One method is a copy of the touch-and-go technique used by OSIRIS-REx on Bennu. The second method, dubbed “anchor and attach,” is untried, and involves using four robot arms, each with their own drill.

Some data suggests Kamo’oalewa is possibly a fragment from the Moon, but that is not confirmed.

After a year studying Kamo-oalewa, Tienwen-2 will then return past the Earth where it will release its sample capsule. The spacecraft will then travel to Comet 311P/PANSTARRS, reaching it in 2034. This comet is puzzling because it has an asteroid-like orbit but exhibits activity similar to a comet.

As for the launch, there is no word where the Long March 3B’s lower stages and four strap-on boosters, all using very toxic hypergolic fuels, crashed inside China. It should be noted that the video I link to above was taken by an ordinary citizen watching from a hill nearby, bringing with him a group of children as well. Considering the nature of the rocket’s fuel (which can dissolve your skin if it touches you), China’s attitude is remarkably sanguine to not only drop these stages on its people, but to allow tourists to get so close to launches.

The leaders in the 2025 launch race:

65 SpaceX
31 China (with one more launch scheduled later today)
6 Rocket Lab (with one launch scheduled for today SCRUBBED)
6 Russia

SpaceX now leads the rest of the world in successful launches, 65 to 50.

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China launches six satellites

9:25 am

China yesterday placed six satellites into orbit, its solid-fueled Kinetica-1 rocket lifting off from the Jiuquan spaceport in northwest China.

China claims this was a commercial launch, taking place from the launch facility at Jiuquan dedicated to commercial launches, but the rocket was built by CAS Space, a division of the Chinese Academy of Sciences. It is also solid-fueled, which means it is likely derived from missile technology, something that the Chinese government will supervise quite closely.

No word on where the rocket’s lower stages crashed inside China.

The leaders in the 2025 launch race:

60 SpaceX
30 China
6 Rocket Lab
5 Russia

SpaceX still leads the rest of the world in successful launches, 60 to 48.

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China reports discovery of new microbe on its Tiangong-3 space station

8:52 am

China’s state-run press yesterday announced the discovery of a new microbe on its Tiangong-3 space station that appears designed to survive in the harsh environment of space.

In May 2023, the Shenzhou-15 crew collected surface microbial samples using sterile wipes, preserving them at low temperatures in orbit. Subsequent ground analysis revealed the novel Niallia tiangongensis species, confirmed through multidisciplinary methods including morphological analysis, genome sequencing, phylogenetic studies and metabolic profiling, the CMSA said.

…Niallia tiangongensis demonstrates exceptional stress resistance, maintaining cellular redox balance and ensuring robust growth in extreme conditions by regulating bacillithiol (BSH) biosynthesis to counteract space-induced oxidative stress, according to the CMSA. It exhibits distinctive capabilities in biofilm formation and radiation damage repair, making it a highly adaptable “all-rounder” for space environments.

More information here. This new microbe has characteristics both different and similar to microbes found on ISS. Its discovery is also not that unique, a it appears such unusual and new biology has been found in other space-related environments, such as the clean rooms on Earth used to build spacecraft. For example, dozens were found in clean room for the Phoenix Mars lander in the early 2000s.

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China launches communications satellite

9:17 am

China today successfully placed a communications satellite into orbit, its Long March 7A rocket lifting off from this coastal Wenchang spaceport.

SpaceX was supposed to have launched a set of Starlink satellites last night as well, but scrubbed the launch about two and a half minutes before launch. It plans to try again tonight.

The leaders in the 2025 launch race:

59 SpaceX
29 China
6 Rocket Lab
5 Russia

SpaceX still leads the rest of the world in successful launches, 59 to 47.

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Chinese pseudo-company completes another launch from sea platform

8:42 am

The Chinese pseudo-company Galactic Energy today successfully placed four communications satellites into orbit, its solid-fueled Ceres-1 rocket lifting off from a sea platform off the eastern coast of China.

To prove how pseudo this company is, China’s state run press did not even mention its existence in the report at the link. The solid fuel of the rocket tells us that it was derived from missile technology, and there isn’t a chance in hell that a private independent company in China could do so without the strict supervision and control from that country’s government.

Nonetheless, this was its 19th successful launch, and its fifth from a sea platform. The rocket has only failed once since since its first launch in 2020.

The leaders in the 2025 launch race:

59 SpaceX
28 China
6 Rocket Lab
5 Russia

SpaceX still leads the rest of the world in successful launches, 59 to 46.

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Two launches last night, by China and Rocket Lab

10:23 am

The high pace of rocket launches this year continued last night, but in a rare exception this time it had nothing to do with SpaceX.

First, the Chinese pseudo-company Landspace successfully placed six radar satellites into orbit, its upgraded version of its Zhuque-2 rocket lifting off from the Jiuquan spaceport in China’s northwest.

No word on where the rocket’s lower stages crashed inside China. Unlike its larger Zhuque-3 rocket, which has not yet flown but is being designed as a copy of a Falcon 9 with its first stage able to return to Earth vertically, the Zhuque-2 has no such ability.

Next, Rocket Lab successfully placed a commercial radar satellite into orbit, its Electron rocket lifting off from one of the company’s two launchpads in New Zealand. This launch was the third by Rocket Lab for the satellite company iQPS, and is the second in an eight-satellite launch contract with the company.

The leaders in the 2025 launch race:

59 SpaceX
27 China
6 Rocket Lab
5 Russia

SpaceX still leads the rest of the world in successful launches, 59 to 45.

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China and SpaceX complete launches

9:58 am

Two launches so far today. First, China successfully launched the first 12 satellites for proposed orbiting computer constellation dubbed the “Three-Body Computing Constellation,” its Long March 2D rocket lifting off from its Jiuquan spaceport in northwest China.

As is usual for China’s state-run press, it revealed little useful information about this constellation.

Each satellite in this initial batch is equipped with a domestically developed 8-billion-parameter AI model capable of processing satellite data across levels L0 to L4 (with L0 referring to raw data directly collected by the satellite), CGTN learned from the lab. The constellation also supports full inter-satellite connectivity. In addition to AI-powered data processing, the satellites will carry out experimental missions, including cross-orbit laser communication and astronomical science observations.

The press also provided no information about where the rocket’s lower stages, using very toxic hypergolic fuels, crashed inside China.

Next, SpaceX placed another 28 Starlink satellites into orbit, its Falcon 9 rocket lifting off from Cape Canaveral in Florida. The first stage completed its fourth flight, landing on a drone ship in the Atlantic.

The leaders in the 2025 launch race:

58 SpaceX
26 China
5 Rocket Lab
5 Russia

SpaceX still leads the rest of the world in successful launches, 58 to 43.

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China launches communications test satellite

9:53 am

China early this morning successfully launched another communications test satellite. its Long March 3C rocket lifting off from its Xichang spaceport in southwest China.

China’s state-run press as always released little information. All we really know is that this launch has been part of a series of recent launches putting similar communications test satellites into orbit. We also don’t know where the rocket’s lower stages, which use very toxic hypergolic fuels, crashed inside China.

The leaders in the 2025 launch race:

57 SpaceX
25 China
5 Rocket Lab
5 Russia

SpaceX still leads the rest of the world in successful launches, 57 to 42.

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China launches classified satellites for military remote sensing

10:27 pm

China today successfully launched a set of classified satellites (number classified) for doing military remote sensing, its Long March 6 rocket lifting off from its Taiyuan spaceport in north China.

As usual, China’s state-run press released little information about the satellites, the launch, or where the rocket’s core stage and four strap-on boosters crashed inside China. The report did state the Long March 6 was “modified,” but did not detail how. One wonders if China has done something to improve the rocket’s upper stage, which reaches orbit and has had a tendency to break up shortly thereafter, creating large clouds of space junk.

The leaders in the 2025 launch race:

55 SpaceX
24 China
5 Rocket Lab
5 Russia

SpaceX still leads the rest of the world in successful launches, 55 to 41.

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China hints that it is moving forward with expansion of Tiangong-3 space station

12:39 pm

According to a statement by one Chinese official, China will use its Long March 5B rocket to soon launch more modules to its Tiangong-3 space station, expanding the station’s size considerably.

“According to the plan, the Long March 5B rocket will also carry out the future launches of additional modules for the crewed space station,” Wang Jue from China Aerospace Science and Technology Corporation (CASC) told China Central Television (CCTV) April 30. No official timeline has been released for the missions, but the comments appear to confirm plans to add modules to Tiangong, a T-shaped, three-module orbital outpost constructed across 2021-2022.

In 2022 China had hinted on this same plan, but it is three years later and nothing has yet happened. It could be this statement was an attempt at lobbying by this official, trying to convince the government to finance the new modules. Or it could be the first new module, a hub with six docking ports that will allow the additional fullsize modules to be attached, is nearing completion and launch.

Who knows? One must take all such proclamations from China with a grain of salt.

The article also notes the revisions to the Long March 5B rocket so that its core stage no longer reaches orbit to subsequently crash uncontrolled somewhere on Earth. Instead, the upper stage has been upgraded so that it gets the payload into orbit and the core stage shuts down earlier and thus falls into the ocean immediately after launch.

Hat tip to BtB’s stringer Jay.

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Chinese crew returns safely after six months in space

9:36 am

A Chinese crew of three safely landed in northern China today after completing a six month mission on China’s Tiangong-3 space station.

The return capsule of the Shenzhou-19 crewed spaceship, carrying astronauts Cai Xuzhe, Song Lingdong and Wang Haoze, touched down at the Dongfeng landing site in north China’s Inner Mongolia Autonomous Region on Wednesday. The three astronauts are all in good health condition, according to the China Manned Space Agency.

Lots of pictures of the landing and recovery at the link, but that’s pretty much the entire text of the press release from China’s state-run press. As that state-run press does routinely, it repeats that same text as the caption under every picture, over and over again, changing it only slightly for the close-up pictures of each astronaut.

A new crew took over for this one on Tiangong-3, beginning their own six month mission. At the moment China has completed three years of continuous occupation out of a planned ten-year mission.

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Since last night four more launches globally

10:26 am

UPDATE: The Firefly launch was a failure. There was a problem during stage separation. See post above.

The worldwide pace of launches continues now relentlessly. Since my last launch post yesterday afternoon, there were four more launches across the global.

First, China launched a “group” of satellites for an “internet constellation,” its Long March 5B rocket lifting off from its coastal Wencheng spaceport. The rocket used a new upper stage which allowed its core stage to shut down sooner and thus not enter orbit to later crash uncontrolled (as earlier Long March 5B cores would do). Instead it fell back into the ocean after launch.

Next, SpaceX sent another 23 Starlink satellites into orbit, its Falcon 9 rocket lifting off from the Kennedy Space Center in Florida. The first stage, flying for the very first time, landed successfully on a drone ship in the Atlantic.

Third, Arianespace, the commercial division of the European Space Agency (ESA), used the Italian rocket company Avio’s Vega-C rocket to place an ESA Earth observation radar satellite dubbed Biomass into orbit, lifting off from French Guiana. This was Arianespace’s second launch in 2025. Though Arianespace managed the launch, it is being phased out. By next year all future launches of Vega-C will be sold and managed by Avio instead, cutting out this bureaucratic middle-man.

Fourth, the American rocket startup Firefly attempted to place a Lockheed Martin demo payload into orbit, its Alpha rocket lifting off from Vandenberg in California. The Lockheed Martin payload is part of a deal that could include as many as 25 launches over the next five years. This was Firefly’s first launch in 2025.

A scheduled launch by Russia of its Angara rocket on a classified military mission was apparently scrubbed, though no information at all has been released as to why the launch did not occur.

The leaders in the 2025 launch race:

50 SpaceX
23 China
5 Rocket Lab
5 Russia

SpaceX now leads the rest of the world in successful launches, 50 to 40.

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China and SpaceX complete launches

8:39 am

Both China and SpaceX completed launches yesterday. First, China placed what its state-run press called “a data relay” satellite into orbit, its Long March 3B rocket lifting off from its Xichang spaceport in southwest China.

No word on where there rocket’s lower stages and four strap-on boosters crashed inside China. All use very toxic hypergolic fuels.

Next SpaceX launched 23 more Starlink satellites, including 13 configured for cell-to-satellite service, its Falcon 9 rocket lifting off from Cape Canaveral in Florida. The first stage completed its 20th flight, landing on a drone ship in the Atlantic.

The leaders in the 2025 launch race:

48 SpaceX
22 China
5 Rocket Lab
5 Russia

SpaceX now leads the rest of the world in successful launches, 48 to 37, with three more launches scheduled for later today. China will use its Long March 5B, its largest rocket, to launch a set of communications satellites, SpaceX will launch another set of Starlink satellites, and ULA will make its second attempt to launch Amazon’s first set of Kuiper internet satellites, the first launch scrubbed due to weather.

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China accelerates its schedule for its upcoming Moon/Mars missions while admitting its lunar base will take longer

10:58 am

Phase I of China/Russian Lunar base roadmap
The original phase I plan of Chinese-Russian lunar
base plan, from June 2021.

The new colonial movement: In several different reports today in China’s state-run press — timed to coincide with the launch of three astronauts to Tiangong-3 — Chinese officials confirmed that it has moved up the planned launch dates for both its first lunar rover as well as its Mars sample return mission, and it is also expanding its offers to the international community to partner on those missions.

At the same time it let slip the fact that it will not be establishing its lunar base on the Moon in 2030, as previously claimed. Moreover, note how this so-called accelerated schedule of lunar missions is actually behind the announced timetable outlined by China and Russia in 2021, as shown on the right. None will fly by this year, as promised.

As for the news today, first China announced that its Tianwen-3 Mars sample return mission will launch in 2028.
» Read more

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A Malaysian state plans spaceport, working in partnership with China

10:00 am

Proposed spaceports in Malaysia
Proposed spaceports in Malaysia

According to an report out of Malaysia yesterday, the Malaysian state of Pahang has initiated a one year study to build a spaceport off its eastern coast near the town of Nensasi, working in partnership with China.

“On April 15, PKNP [Pahang State Development Corporation] signed a letter of intent with China Great Wall Industry Corporation (CGWIC) and Lestari Angkasa Sdn Bhd to establish a strategic collaboration in the space technology sector. “Next month, PKNP and Lestari Angkasa will visit Wenchang Space City in Hainan, China, to hold further discussions on the Pahang International Spaceport project,” he said during the Pahang state assembly session today.

This is the second Malaysian state to propose its own spaceport. In January the eastern state of Sabah began its own study, working in partnership with the Ukraine.

The partnership with China is worrisome for the U.S., as it is very likely that China will arrange use of that spaceport for its own purposes. It will also use its presence there to access and steal any technology brought by other western companies or nations should they launch there as well.

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China launches three astronauts to Tiangong-3 space station

9:42 am

China today successfully launched a new crew of three astronauts for a six-month mission on its Tiangog-3 space station, its Long March 2F rocket lifting off from its Jiuquan spaceport in northwest China.

The crew’s Shenzhou capsule will dock autonomously with the station later today. This was China’s fifteenth manned mission and ninth to the station, which it has now occupied continuously for more than three and a half years.

The rocket’s core stage and four strap-on boosters crashed somewhere inside China. No word on where or whether they crashed near any habitable areas.

The leaders in the 2025 launch race:

46 SpaceX
21 China
5 Rocket Lab
5 Russia

SpaceX now leads the rest of the world in successful launches, 46 to 36.

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China launches six technology test satellites

9:50 pm

China today successfully placed a set of six technology test satellites into orbit, its Long March 6 rocket lifting off from its Taiyuan spaceport in northeast China.

No word on where the rocket’s lower stages and four strap-on boosters crashed inside China. Furthermore, the upper stage of the Long March 6 rocket, which reaches orbit, has a history of breaking up and creating clouds of space junk. We have no assurance from China whether they have fixed this issue.

The leaders in the 2025 launch race:

43 SpaceX
20 China
5 Rocket Lab
5 Russia

SpaceX still leads the rest of the world in successful launches, 43 to 35. (Note: this last number is corrected from the previous update, which was one number short.)

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China successfully tests a three-satellite constellation in lunar space

9:40 am

China/Russian Lunar base roadmap
The original Chinese-Russian lunar base plan, from June 2021.
Most of the Russian components are not expected to launch.

China’s state-run press today announced that it has successfully completed the first three-satellite communications test of a constellation in a Distant Retrograde Orbit (DRO) in lunar space.

DRO-A and DRO-B, two satellites developed by the Chinese Academy of Sciences (CAS) and deployed in the DRO, have established inter-satellite measurement and communication links with DRO-L, a previously launched near-Earth orbit satellite. The achievement was disclosed at a symposium on Earth-moon space DRO exploration in Beijing on Tuesday.

DRO is a unique type of orbit, and the Earth-moon space refers to the region extending outward from near-Earth and near-lunar orbits, reaching a distance of up to 2 million kilometers from Earth. In the Earth-moon space, DRO is characterized by a prograde motion around Earth and a retrograde motion around the moon, said Wang Wenbin, a researcher at the CAS’ Technology and Engineering Center for Space Utilization (CSU). Since DRO provides a highly stable orbit where spacecraft require little fuel to enter and stay, it serves as natural space hub connecting Earth, the moon and deep space, offering support for space science exploration, the deployment of space infrastructure, and crewed deep-space missions, Wang said.

On Feb. 3, 2024, the experimental DRO-L satellite was sent into a sun-synchronous orbit and began conducting experiments as planned. The DRO-A/B dual-satellite combination was launched from the Xichang Satellite Launch Center in southwest China’s Sichuan Province on March 13, 2024, but failed to enter its intended orbit due to an anomaly in the upper stage of the carrier rocket.

Facing this challenge, the satellite team performed a “life-or-death” rescue operation under extreme conditions, promptly executing multiple emergency orbit maneuvers to correct the trajectory of the two satellites. After a journey of 8.5 million kilometers, the DRO-A/B dual-satellite combination ultimately reached its designated orbit, according to Zhang Hao, a researcher at CSU who participated in the rescue operation.

On Aug. 28, 2024, the two satellites were successfully separated. Later, both DRO-A and DRO-B established K-band microwave inter-satellite measurement and communication links with DRO-L, testing the networking mode of the three-satellite constellation, Zhang said.

China’s government space program continues to follow a very rational and well-thought-out plan for establishing a manned base on the Moon, as shown in the 2021 graph to the right that China appears to be achieving as planned. While it is very likely it will not meet its 2030 goal for landing a human on the Moon, it is clearly establishing the technology for making that landing in a reasonable timeline with a later long-term permanent presence in a lunar base possible.

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China launches another technology test communications satellite payload

10:52 pm

China today successfully launched a test technology satellite for doing “multi-band and high-speed communication technology validation tests, possibly for future large internet/communications constellations, its Long March 3B rocket lifting off from its Xichang spaceport in southwest China.

No word on where the rocket’s lower stages and four strap-on boosters, all using very toxic hypergolic fuels, crashed inside China.

The leaders in the 2025 launch race:

40 SpaceX
19 China
5 Rocket Lab
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China: samples from the near and far sides of the Moon are different

8:53 am

Scientists studying the lunar samples brought back from China’s Chang’e-6 mission to the far side of the Moon have determined that the different environments create differences in the surface material.

The study found that the solar wind exposure time of the Chang’e-6 samples was close to the minimum observed in the Apollo 11 samples, lower than that of the other Apollo samples, and slightly shorter than that of the Chang’e-5 samples. However, surprisingly, the npFe⁰ grain sizes in the Chang’e-6 samples were larger. “This might suggest that solar wind radiation in this region leads to more pronounced segregation and aggregation of iron,” she noted. These exciting new results add to the growing evidence that space weathering on the lunar farside may differ from that on the nearside, and, contrary to previous findings from Apollo and Chang’e-5 samples, solar wind radiation plays a more dominant role in the space weathering process on the lunar farside.

There are differences in the solar wind’s influence on different regions of the Moon. During each synodic month, the near side of the Moon enters Earth’s magnetotail, where the protection afforded by Earth’s magnetic field reduces its exposure to the solar wind; in contrast, the farside is continuously exposed to direct solar wind radiation. Moreover, due to orbital dynamics, different locations on the Moon experience varying impact velocities from cometary and asteroidal meteoroids. The relative velocity between the Moon’s surface and impacting meteoroids changes with the lunar phase: during a full moon, when the Moon and meteoroids move in the same orbital direction, the relative velocity increases; the opposite occurs during a new moon.

That there are differences between samples from the Moon’s two hemisphere should not a surprise. Confirming and characterizing those differences however is good.

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