Tag: China

China tests parachutes on recent Long March 3B launch

10:17 am

During a May 17, 2023 launch of a Long March 3B rocket, China tested the use of parachutes to better control the descent and landing of the rocket’s boosters.

The system was used on a Long March-3B rocket carrying a BeiDou navigation satellite into orbit on May 17 from the Xichang Satellite Launch Center in Sichuan Province, according to the academy.

Developed by the academy, the parachute brought down the rocket boosters to a predetermined location, narrowing the range of the landing area by 80 percent.

Based on the limited information provided by China’s state-run press, it appears this system was only tested on the four strap-on boosters, not on the first stage core. Regardless, such a system, which appears to be a copy of the system Rocket Lab has been developing for the last four years, will significantly reduce the hazards to Chinese inhabitants who live in the drop zones of these rockets.

Note too that China previously tried to copy SpaceX’s grid fins. Apparently its engineers found it difficult if not impossible to reverse engineer that concept, so they apparently decided to try copying Rocket Lab’s parachute methods instead.

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China’s Kuaizhou-1A solid-fueled rocket launches satellite

9:41 am

China’s Kuaizhou-1A solid-fueled rocket today successfully placed what its state-run press described as a “experiment satellite … to verify satellite communication and remote sensing technologies.”

The rocket lifted off from China’s interior Jiuquan spaceport in the Gobi desert. No word on where the rocket’s three lower stages crashed, or whether they did so near habitable areas.

The leaders in the 2023 launch race:

38 SpaceX
22 China
8 Russia
5 Rocket Lab

American private enterprise still leads China 43 to 22 in the national rankings, and the entire world combined 43 to 38, with SpaceX by itself now tied those other nations combined 38 to 38.

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Chinese pseudo-company launches its rocket for 2nd time

9:17 am

The Chinese pseudo-company CAS Space yesterday successfully launched its rocket Lijian-1 rocket for second time, lifting off from China’s interior Jiuquan spaceport in the Gobi Desert and carrying a record (for China) of 26 cubesats.

As was usual for China, its state-run press revealed almost nothing about the satellites. Nor did it provide any information about where the rocket’s lower stages crash-landed in China, or if they did any damage or landed near habitable areas.

This pseudo-company is actually even more pseudo than other Chinese pseudo-companies, as it is a direct spin-off created by the government Chinese Academy of Sciences, with most of its investors directly linked to that academy.

The leaders in the 2023 launch race:

38 SpaceX
21 China
8 Russia
5 Rocket Lab

American private enterprise still leads China 43 to 21 in the national rankings, and the entire world combined 43 to 37, with SpaceX by itself beating those other nations combined 38 to 37.

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Tianzhou unmanned freighter completes month-long free flight, re-docks with Tiangong-3

9:30 am

Engineers today successfully re-docked a Tianzhou unmanned freighter to China’s Tiangong-3 space station after 33 days flying in formation with the station.

As is usual, China released no information about the reasoning behind this free flight, though some reasons are obvious. The station has two docking ports, and during that 33-day time period the station also completed a crew swap, with one Shenzhou capsule docking with three new astronauts while the previous crew and its Shenzhou capsule was still docked. The Tianzhou freighter had to undock to provide a port during this time period for the two manned capsules.

This formation free flight and docking was also likely testing the kind of routine maneuvers China plans to do when it launches its Hubble-class optical space telescope next year. That telescope will fly freely near the station during most of its operations. For maintenance and repair however it is my understanding that it will be brought back to the station and docked with it. The just completed independent flight of the Tianzhou freighter demonstrated this capability.

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Three astronauts return to Earth safely from China’s Tiangong-3 space station

9:49 am

After completing six months in space on China7s Tiangong-3 space station, three astronauts safely returned to Earth yesterday, with their Shenzhou capsule touching down in inner Mongolia.

This mission was the first full six month mission on the station. During their mission they completed four spacewalks. Though little was published about what was accomplished on those EVAs, it is likely it involved completing the construction of the station as well as installing some exterior experiments.

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Chinese launch yesterday set record for number of humans in space

8:59 am

The launch yesterday of three Chinese astronauts to that country’s Tiangong-3 space station established a new record, seventeen, for the number of humans in space.

The launch of the next crew to China’s Tiangong space station late Monday (U.S. time) added three astronauts to the population of humans in space, which reached a record number of 17 people in orbit — six Chinese citizens, five Americans, three Russians, two Saudis, and one Emirati astronaut.

The arrival of Chinese astronauts Jing Haipeng, Zhu Yangzhu, and Gai Haichao in space following their launch atop a Long March rocket broke the previous record of 14 people in orbit at one time.

Meanwhile, the four-person crew of the commercial AX-2 mission to ISS, has undocked from ISS, with SpaceX’s Freedom capsule expected to splashdown in the Gulf of Mexico at 11:09 pm (Eastern) tonight.

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China sends a new crew to its Tiangong-3 space station

7:31 pm

Using its Long March 2F rocket, China today (May 30th in China) sent a new three-man crew to its Tiangong-3 space station for a five month mission.

The launch was from the Juiquan spaceport in the interior of China, so both the four side strap-on boosters as well as the core stage crashed somewhere in China. No word of any damage or injuries.

The Shenzhou capsule is expected to dock with the station about six hours after launch. The old crew’s stay will overlap with this new crew for a short time before returning to Earth.

The leaders in the 2023 launch race:

35 SpaceX
20 China
8 Russia
5 Rocket Lab

American private enterprise still leads China 40 to 20 in the national rankings, and the entire world combined 40 to 36. SpaceX alone now trials the rest of the world combined 35 to 36, but trails the entire world including American companies 35 to 41.

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China unveils next Shenzhou launch date and crew to its space station

9:07 am

China today revealed the next three-man crew to occupy its Tiangong-3 space station, with a planned launch in a Shenzhou crew capsule targeting May 30, 2023, Chinese time.

Because of time differences, that launch will occur tonight at 6:28 pm tonight, Pacific time. The rocket will be a Long March 2F taking off from China’s western interior Jiuquan spaceport. The rocket’s lower stages will therefore crash somewhere in China.

The crew will remain on board the station for five months, and with one astronaut the first Chinese to fly in space four times.

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China launches two satellites yesterday, one for Macau

9:16 am

China yesterday used its Long March 2C rocket to launch two satellites into orbit, with one the first science satellite by Macau, designed to study the Earth’s magnetic field in conjunction with other satellites already in orbit.

No information that I could find was released about the second satellite. The launch, from China’s interior Jiuquan spaceport, dropped the rocket’s first stage somewhere in China. No word on whether it landed near habitable areas.

The leaders in the 2023 launch race:

34 SpaceX
19 China
6 Russia
4 Rocket Lab (with a launch scheduled for tomorrow)

American private enterprise still leads China 38 to 19 in the national rankings, and the entire world combined 38 to 31. SpaceX by itself now tied trails in total launches with the rest of the world, including American companies, 34 to 35.

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China’s Long March 3B puts another GPS-type satellite into orbit

8:58 pm

China early on Wednesday, May 17, 2023 (China time) used its Long March 3B to successfully launch a GPS-type satellite, adding one more satellite to its constellation of similar satellites.

As the launch was from the Xichang Satellite Launch Center in the interior, the rocket’s core stage and four strap-on boosters crashed somewhere inside China. No word on whether they landed near habitable areas.

The leaders in the 2023 launch race:

31 SpaceX
18 China
6 Russia
4 Rocket Lab

American private enterprise still leads China 35 to 18 in the national rankings, and the entire world combined 35 to 30. SpaceX by itself trails the entire world, including other American companies, 31 to 34 in launches this year.

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China’s X-37B copy appears to have tested docking and rendezvous while in orbit

12:41 pm

Tracking data during the 276-day flight of China’s copy of Boeing’S X-37B reusable mini-shuttle suggests that it tested docking and rendezvous operations with an object it released while in orbit.

U.S. Space Force’s 18th Space Defense Squadron tracking data revealed an object in a closely-matching orbit to the spaceplane Oct. 31, 2022 (NORAD ID 54218 (2022-093J COSPAR ID)).

This companion subsatellite was then used in a series of rendezvous and proximity operations (RPO) with the spacecraft, according to Leolabs. “Analyzing data from our global radar network, we’ve determined that the Test Spacecraft2 has propulsive capability and engaged in proximity operations with Object J, including what appeared to be at least two and possibly three capture/docking operations,” a Leolabs statement said.

None of this is a surprise. Such reusable shuttles allow for a great deal of testing and experimentation in orbit, that can then be returned to Earth for analysis.

Hat tip Jay, BtB’s stringer.

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China launches cargo freighter to its Tiangong-3 space station

9:29 am

Using its Long March 7 rocket launching from its coastal Wenchang spaceport, China today successfully placed into orbit a Tianzhou cargo freighter to resupply the Tiangong-3 space station.

The leaders in the 2023 launch race:

29 SpaceX (with a launch scheduled for later today)
17 China
6 Russia
4 Rocket Lab

American private enterprise still leads China 33 to 17 in the national rankings, and the entire world combined 33 to 29.

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China’s X-37B copy lands successfully after 276 days in orbit

8:35 am

China’s reusable mini-shuttle, essentially a copy of Boeing’s X-37B, has completed its second flight, landing in China on a runway after 276 days in orbit.

The project will provide a more convenient and inexpensive way to access space for the peaceful use of space in the future, according to the statement.

The reusable test spacecraft launched from Jiuquan Satellite Launch Center in the Gobi Desert Aug. 4 (UTC), 2022. The spacecraft released an object into orbit, U.S. Space Force tracking data revealed late last year. The small satellite operated in very close proximity to the spaceplane.

This apparent second flight on the secretive spacecraft differs from its first mission in 2020. That flight saw the spaceplane orbit for four days.

During the flight the spaceplane made numerous orbital maneuvers.

Like the X-37B, this reusable mini-shuttle allows China to do many technology experiments in orbit and then return them to Earth for analysis.

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China once again outlines its lunar base plans; Russia out? Project delayed?

9:38 am

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

In outlining today China’s long term plans for establishing a manned lunar base near the south pole of the Moon, the project’s chief designer, Wu Weiren, revealed several changes in the program, almost all of which were indicated by what he did not say than what he did.

The graph to the right was released when this program was first announced in June 2021. At that time the plan was announced as a partnership of China and Russia, and was aiming to begin intermittent manned operations on the Moon in 2036.

According to Wu’s presentation today however, China apparently no longer considers Russia to be a full equal partner. It appears instead that Russia was mentioned as part of Wu’s effort to encourage many other countries to join the project. As reported by China’s state-run press:

During Tuesday’s event, Wu also highlighted the cooperation initiative for countries, organizations, and scientists worldwide to join the construction of the research station. In 2021, the China National Space Administration (CNSA) released a partnership guideline for the International Lunar Research Station.

That the state-run press made no mention of Russia in this description indicates strongly China’s devaluation of Russia’s contribution. This devaluation is not a surprise. As I noted in 2021,

[B]ased on Russia’s recent track record in the past two decades for promised space projects, we have no guarantee they will fly as scheduled, or even fly at all.

Since then Russia invaded the Ukraine and has suffered economically because of it. Its own first contribution to this partnership, Luna-25, has been delayed repeatedly, with its present launch now scheduled for July. It was always obvious that Russia — in its present state — could not match China, nor was it likely it would meet its promised targets.

Wu’s presentation also indicated that the third phase, when intermittent manned operations will begin, has been delayed from 2036 to 2040.

Overall, however, the Chinese plan remains stable and rational, and is likely to be carried out with reasonable success, based on how the country proposed and then achieved construction of its space station. The station was built essentially as described by the plan, with only a delay of a few years.

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China launches weather satellite, dumps debris near Taiwan

11:19 am

China's spaceports
China’s spaceports

China today successfully used its Long March 4D rocket to put a weather satellite into orbit, launching from its Jiuquan Satellite Launch Center in northwest China.

A short clip of the launch is available here [Hat tip Jay]. The material falling from the rocket are insulation panels that are intended to fall off in this manner.

Apparently, the flight path took it over Taiwan.

For six hours, air and maritime traffic was disrupted north of Taiwan. The maritime safety administration of Fujian, the Chinese province located opposite Taiwan, warned of a “possible fall of debris from a launcher.”

Taiwan’s Ministry of National Defense said it monitored what it described as a military launch and confirmed having “detected some debris falling into the northern waters of Taiwan.” 33 flights were affected, Taiwan’s Civil Aeronautics Administration said, quoted by Reuters.

The leaders in the 2023 launch race:

24 SpaceX
16 China
6 Russia
3 Rocket Lab

American private enterprise still leads China 27 to 16 in the national rankings, though it is now tied with the rest of the world combined at 27.

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Venezuela agrees to join China’s lunar base project

9:31 am

During a visit to a new Chinese space facility in China, the head of Venezuela’s space agency announced that it has agreed to join China’s lunar base project.

Marglad Bencomo, executive director of the Bolivarian Agency for Space Activities (ABAE), visited China’s new, national Deep Space Exploration Laboratory (DSEL) March 30 to discuss cooperation and exchanges. She was met by Wu Yanhua, former deputy director of the China National Space Administration (CNSA) and now executive vice chairman of DSEL. The two sides exchanged in-depth views on international cooperation in the field of deep space exploration, according to a DSEL statement.

Bencomo said that Venezuela was willing to sign a China-Venezuela Memorandum of Understanding as soon as possible to jointly promote the construction of international lunar research stations, according to the DSEL statement.

If this partnership agreement is signed, Venezuela would be the first nation outside of Russia to join China’s project. China has offered a similar partnership deal to Brazil, which will likely not agree because it is a signatory to the Artemis Accords and working with China will threaten any work it does with the U.S. For example, the UAE recently ended a project to fly a rover on a Chinese rocket for these very reasons.

This deal with Venezuela is largely empty blather, since Venezuela is presently a bankrupt communist state, barely able to feed its own people.

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Chinese pseudo-company succeeds in reaching orbit again after three straight failures

9:09 am

China's spaceports
China’s spaceports

The Chinese pseudo-company I-space has finally reached orbit again with a launch today of its Hyperbola-1 (SQX-1) solid-fueled rocket, lifting off from China’s Jiuquan inland spaceport in the Gobi Desert.

After an initial launch success in 2019, the company had failed three straight times until today. No word on whether the first stage landed near habitable areas in China. Nor did the pseudo-company reveal whether the rocket carried an actual satellite into orbit.

Jiuquan is presently the only spaceport where China permits these pseudo-companies to launch, and has been expanding its facilities for these commercial operations. This also means China will be experiencing more first stages dropping on their heads of its people, which is why it is also building a commercial launchpad at the Wenchang spaceport on the coast.

The leaders in the 2023 launch race:

23 SpaceX
15 China
6 Russia
3 Rocket Lab

American private enterprise now leads China 26 to 15 in the national rankings, and the entire world combined 26 to 25. SpaceX now trails the rest of the world combined, including American companies, 23 to 28.

UPDATE from BtB’s stringer Jay: Video of the launch can be found here. Jay also notes the lack of any mention of I-space in the official Chinese press, announcing this launch. Adds weight to the conclusion that these companies are not really real, but simply divisions of the Chinese government.

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China tests vertical landing of small rocket from barge at sea

9:51 am

China's own version of SpaceX's Grasshopper

A commercial division of the Chinese Academy of Sciences (CAS) has successfully test flown its own a very small version of SpaceX’s Grasshopper, doing a vertical lift off from a barge at sea and then landing vertically on that barge.

The rocket prototype flew at an altitude of more than 1,000 meters, descended in a smooth hovering fashion and then decelerated thanks to the engine reverse thrust. The landing speed was reduced to less than two meters per second at the final stage before the rocket touched down steadily with a landing precision of under 10 meters.

The landing test took about 10 minutes, the CAS institute revealed.

The small scale of the rocket, as shown by the screen capture above, taken from the short video CAS produced of the flight, shows that CAS is a long way yet from using this technology in an orbital flight. Nonetheless, it demonstrates that at least two Chinese pseudo-companies are working hard to copy SpaceX’s reusable Falcon 9 first stage. With this test CAS has demonstrated it now has the software and fine engine control for vertical rocket landings. Based on the image of its proposed rockets at this tweet, this prototype will eventually lead to the development of larger orbital versions that look remarkably similar to what SpaceX produces.

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April 5, 2023 Quick space links

2:34 pm

Courtesy of BtB’s stringer Jay.

 

 

  • Tianzhou freighter will fly in formation with China’s Tiangong-3 space station

    • The plan is to periodically redock the freighter to the station “when inventories stored inside are needed.” Jay wonders whether this is a test of the similar formation flying that will be required when China’s space telescope arrives next year to orbit near the station for periodic maintenance and repair. I think he is correct.

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SpaceX and Chinese pseudo-company complete launches

9:46 am

Two launches today. First, a new Chinese pseudo-company, dubbed Space Pioneer, completed the first launch of its liquid kerosene-fueled Tianlong-1 rocket, putting a military surveillance satellite into orbit.

Space Pioneer is the third Chinese pseudo-company to achieve orbit, but the first to do it with a liquid-fueled rocket. The previous two, Ispace and Galactic Energy, used solid-fueled rockets based on military missile technology. All of these Chinese companies follow a private model. An individual or a group of individuals creates the company, obtains private investment capital, and then wins contracts from the Chinese government. What makes them pseudo is that they do not work independently and freely, and really do not own their products. The Chinese government supervises and approves everything, and can take over at any time.

The second launch today was by SpaceX, using its Falcon 9 rocket lifting off from Vandenberg Space Force Base in California to put a new smallsat constellation of ten military satellites, designed to test the quick development (under two years) of such smallsats for use by the military.

The first stage successfully completed its second flight, landing back at Vandenberg. The fairings completed their fourth and sixth flights, respectively.

The leaders in the 2023 launch race:

22 SpaceX
14 China
6 Russia
3 Rocket Lab

American private enterprise still leads China 25 to 14 in the national rankings, and the entire world combined 25 to 24. SpaceX by itself trails the entire world, including American companies, 22 to 27.

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Two launches by China

9:15 am

China's spaceports
China’s spaceports

China yesterday and today successfully completed two launches using two different rockets from two different spaceports.

First, a Long March 2D rocket yesterday launched a set of four satellites establishing a new constellation of radar satellites designed to measure the Earth’s surface topography. Lift off was from the Taiyuan Satellite Launch Center in the northeast of China. No word on where the rocket’s first stage crashed.

Next, a Long March 4C rocket today placed in orbit a classified military “remote-sensing” satellite, lifting off from the Jiuquan Satellite Launch Center in China’s northwest. Once again, no information was released on where the first and second stages of the rocket crashed to Earth.

The leaders in the 2023 launch race:

21 SpaceX
13 China
6 Russia
3 Rocket Lab

American private enterprise still leads China 24 to 13 in the national rankings, and the entire world combined 24 to 23. SpaceX now trails the entire world combined, including American companies, 26 to 21.

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Zhurong: Small polygons on light curved dunes indicate regular atmospheric water interaction

1:12 pm

Zhurong's full journey on Mars

A paper published this week in Geophysical Research Letters by the science team for China Zhurong Martian rover has revealed the discovery of small polygon cracks on the surface of the many curved light-colored small dunes found in the region where Zhurong landed, suggesting the possibility of relatively recent water activity between the atmosphere and the dune surfaces.

Those dunes, dubbed transverse aeolian ridges (TARs) by the science team, are the many light curves visible in the labeled Mars Reconnaissance mosaic to the right. The blue arrows indicate Zhurong’s path south from its landing spot at the top and ending near the bottom of the picture after traveling about 1,400 feet.

According to the paper, the TARs were formed by the prevailing winds over many eons, coming first from the north and then from the northwest. The edges of the ridges, being smaller, are pushed ahead quicker, thus creating the curved shape. The polygons were small, never larger than 4 inches in size, with five to six sides. The scientists theorize that they were formed when atmospheric water interacted with the dune crust, causing fractures “due to temperature/moisture changes or deliquescence/dehydration cycling of salts”. This process could be slow or fast, and could actually be occurring in relatively recent times, as the scientists say it requires only a little water in the atmosphere.

More likely however we are seeing evidence of water from the past, from tens of thousands to several million years ago.

Zhurong meanwhile remains in hibernation, and might never come out of that condition. Orbital images indicate that its solar panels are dust-covered, the result of the heavy winter dust storm season. The project team however is hopeful that with time and the arrival of Martian summer the dust will be blown off and they can reactivate the rover. This hope however entirely depends on the arrival of a dust devil acoss the top of Zhurong, a random event that cannot be predicted. With both the Spirit and Opportunity rovers, such events happened regularly, allowing those missions to last years instead of only 90 days. With InSight it never happened, and the lander died after two-plus years on Mars.

Zhurong’s future fate thus remains unknown, but not promising at this moment.

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Scientists detect water inside lunar samples returned to Earth by Chang’e-5

7:53 pm

Chinese scientists have found water molecules trapped within glass beads found within the lunar samples returned to Earth by the lunar lander Chang’e-5.

The team polished and analysed 117 glass beads which were scooped up by China’s Chang’e-5 spacecraft in December 2020 and brought back to Earth. The beads are formed by tiny meteorites that bombard the surface of the Moon, which lacks the protection of an atmosphere. The heat of the impact melts the surface material, which cools into round glass beads around the width of a strand of hair.

…The glass beads may make up around three to five percent of lunar soil, according to the study. A “back of the envelope” calculation suggested that there could be around a third of a trillion tonnes of water inside all the Moon’s glass beads, he added. And it only takes mild heat of around 100 degrees Celsius (210 Fahrenheit) to liberate the water from the beads, Anand said.

According to the paper, the water’s origin might be tied to the solar wind, and might have been implanted in the beads after their impact formation.

If this analysis is correct, it might explain the hydrogen signature found in large parts of the lunar surface, where it is believed water simply couldn’t exist. It also might explain why the first images inside permanently shadowed lunar craters show no obvious ice, only what appear to be ponds of dark dust. The dust might contain these beads, and thus explain the hydrogen signature detected there as well.

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China’s Long March 11 rocket launches classified Earth observation satellite

9:06 am

China yesterday used its Long March 11 solid-fueled four-stage rocket to launch a classified Earth observation satellite into orbit.

The launch was from an interior spaceport, so the rocket’s lower stages crashed somewhere in China or Mongolia. No word on if they landed near habitable areas.

The 2023 launch race:

17 SpaceX
10 China
4 Russia
1 Rocket Lab
1 Japan
1 India

American private enterprise still leads China 18 to 10 in the national rankings, and the entire world combined 18 to 16. SpaceX alone is now tied with entire world, including the rest of the U.S., 17 to 17.

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Chinese pseudo-commercial rocket industry gearing up to launch numerous times from interior spaceport

12:07 pm

China's spaceports

Even as China is presently building a commercial launch facility at its Wenchang spaceport on the coast, at least four of China’s pseudo-commercial rocket companies are gearing up to launch numerous times from the Jiuquan Satellite Launch Center in the interior of China.

The link above shows the launch sites being built at Jiuquan by pseudo-companies Landspace, Expace, CAS Space, and Space Pioneer. The map to the right illustrates what these interior launches will mean. Since none of these pseudo-companies will be vertically landing their first stages — at least not for several years — it means that numerous first stages will be coming down in many areas in China and Mongolia, most of which will be uncontrolled descents.

Eventually the Wenchang launch facility on the coast will become available, but based on past Chinese actions, do not expect these pseudo-companies to end their operations at Jiuquan at that time. All are controlled by the Chinese government, which has made it very clear it really doesn’t care if first stages crash near habitable areas.

Hat tip to BtB’s stringer Jay for this story.

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Russia and China launch satellites

9:20 am

Two launches today in Russia and China.

First China used its Long March 2C rocket to launch a “remote sensing satellite” into orbit. No other information about the satellite was released. Nor was any information about whether the rocket’s first stage landed near habitable areas.

Next Russia used its Proton rocket to launch a classified satellite, likely a military surveillance satellite, into orbit. Like China Russia launches from an interior spaceport, with its first stage falling “in Karaganda Region of Kazakhstan,” with the second stage landing in drop zones in Russia. Russia, which has been doing this regularly for more than a half century, has always done a good job either avoiding habitable areas with the first stage crash, or keeping such stories out of the international press.

The 2023 launch race:

16 SpaceX
9 China
4 Russia
1 Rocket Lab
1 Japan
1 India

American private enterprise still leads China 17 to 9 in the national rankings, and the entire world combined 17 to 15. SpaceX alone is now tied with the entire world, including all other American companies, 16 all.

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China’s Long March 4C rocket launches two Earth observation satellites

9:23 am

China today used its Long March 4C rocket to launch two Earth observation satellites from one of its interior spaceports.

No word on whether the expendable first stage landed near habitable areas. In related news the upper stage of a Long March 2D rocket, launched in June 2022, burned up over Texas on March 8, 2023. Such upper stage uncontrolled de-orbits are not unusual, and the effort by this news outlet to make a big deal about it is just politics. Unlike the lower stages of China’s rockets that hit the ground right after launch, it is very unlikely any pieces reached the surface, and any that did were small and posed a small risk.

The 2023 launch race:

16 SpaceX
8 China
3 Russia
1 Rocket Lab
1 Japan
1 India

American private enterprise still leads China 17 to 8 in the national rankings, and the entire world combined 17 to 13. SpaceX alone still leads the entire world, including American companies, 16 to 14.

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China places classified satellite into orbit using Long March 2C rocket

9:12 am

From one of its interior spaceports China today successfully launched a classified “remote sensing” satellite using its Long March 2C rocket.

No information about the payload was released by China, not even a satellite name. Nor was there any word on whether the expendable first stage landed near habitable areas.

The 2023 launch race:

12 SpaceX
7 China
3 Russia
1 Rocket Lab
1 Japan
1 India

American private enterprise still leads China 13 to 7 in the national rankings, and the entire world combined 13 to 12. SpaceX on its own is now tied with the entire world 12 to 12.

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China’s Long March 3B rocket launches communications satellite

9:19 am

China today successfully used its Long March 3B rocket, launching from an interior spaceport, to place a satellite into orbit to provide “high-speed broadband access services for fixed terminals, vehicle/ship/airborne terminals.”

Little other information has been released, but that description sounds remarkably similar to what OneWeb’s satellite constellation does.

No word on whether the rocket’s lower stages crashed near habitable areas.

The 2023 launch race:

12 SpaceX
6 China
2 Russia
1 Rocket Lab
1 Japan
1 India

American private enterprise still leads China 13 to 6, and the entire world combined 13 to 10. SpaceX alone leads the entire world combined 12 to 10.

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China’s continued silence about Zhurong suggests Mars rover is dead

9:05 am

Zhurong's ground-penetrating radar data
The data from Zhurong’s ground-penetrating radar instrument.

Overview map
Zhurong’s final location is somewhere in the blue circle.

China’s continued silence about Zhurong — which should have come out of hibernation sometime in late December-early January — suggests the Mars rover did not survive the Martian winter, which this year was also lengthened near the end by some additional dust storms.

Zhurong went into hibernation in May 2022, at the start of winter, with plans to awaken in December. Like the helicopter Ingenuity and the lander InSight, it depends on solar power, and had to contend with a very relatively severe winter dust season this Martian year.

Even though the Chinese press has loudly touted Tianwen-1’s first two years in Mars orbit, it has made little or no mention of Zhurong, a silence that is deafening.

The silence is also foolish, because China has nothing to be ashamed of concerning Zhurong. The mission was only supposed to operate for 90 days. Instead it lasted more than a year, traveling much farther than planned. Most important, the data from its radar instrument (shown above) showed that, at this location at 25 degrees north latitude, there is no underground ice to a depth of 260 feet. That data confirmed that the Martian equatorial regions below 30 degrees latitude are very dry, with any underground ice existing rarely if at all. The icy regions above 30 degrees latitude do not appear to extend much farther south than that latitude.

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