Rocket Lab and China launch satellites successfully

Both the American company Rocket Lab and China have successfully placed satellites in orbit in the past day.

First, Rocket Lab successfully placed two Earth observation satellites for the company Capella yesterday. This was also its second launch from Wallops Island in Virginia. The company made no attempt to recover the first stage.

Next, China today used its Long March 3B rocket to place its own Earth observation satellite into orbit from its Xichang spaceport, located in the country’s northeast but far from the ocean. No word on whether the rocket’s first stage and four strap-on boosters crashed near habitable areas.

The leaders in the 2023 launch race:

17 SpaceX
11 China
4 Russia
2 Rocket Lab

For the rest of the year, I will only list the leaders with each launch update. At this moment, American private enterprise leads China 19 to 11 in the national rankings, and the entire world combined 19 to 17. SpaceX alone now trails the rest of the world combined, including American companies, 17 to 19.

These numbers will likely change later today, as SpaceX has two launches scheduled in just a few hours. One launch will place two communications satellites in orbit for the Luxembourg company SES. The other will launch another 52 Starlink satellites.

Endless ripple dunes in Mars’ third largest impact basin

Ripple dunes in Mars' third biggest impact basin
Click for original image.

Cool image time! The picture to the right, cropped to post here, was taken on November 30, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The section cropped shows only a small portion of the endless ripple dunes seen in this area. The color strip provides us some interesting other details as well as mysteries. The orange indicates dust on the ridges as well as the higher terrain near the center of the picture. The green in the hollows as well as to the east and west suggests coarser materials that have settled in lower elevations. This supposition is reinforced by the orange area near the bottom of the picture where the ripples have mostly dissipated. This is a high spot, and we appear to be looking at a dusty surface. (This impression is clearer in the full image.)

The latitude is high, 48 degrees south, but as far as I know orbital images have not found a lot of ice evidence in this part of Mars.
» Read more

Student cubesat demonstrates how to use a solar sail for satellite deorbit

Using cheap off-the-shelf parts students at Brown University have successfully tested a simple solar sail in space and shown how it can be used to de-orbit satellites efficiently and inexpensively.

They built a satellite on a shoestring budget and using off-the-shelf supplies available at most hardware stores. They even sent the satellite — which is powered by 48 Energizer AA batteries and a $20 microprocessor popular with robot hobbyists — into space about 10 months ago, hitching a ride on Elon Musk’s SpaceX rocket.

…The students added a 3D-printed drag sail made from Kapton polyimide film to the bread-loaf-sized cube satellite they built. Upon deployment at about 520 kilometers — well above the orbit of the International Space Station — the sail popped open like an umbrella and is helping to push the satellite back down to Earth sooner, according to initial data. In fact, the satellite is well below the other small devices that deployed with it. In early March, for instance, the satellite was at about 470 kilometers above the Earth while the other objects were still in orbit at about 500 kilometers or more.

Based on the data, it is expected the cubesat will burn up in the atmosphere in five years, not twenty-five or so predicted for the other cubesats launched to the same orbital elevation.

This experiment above all proves that most of the very expensive demo missions to test this kind of technology have been grossly over-budget. The entire cost of this student-built project was just $10,000, and it actually was more successful in proving this technology than a number of past solar sail projects that cost millions.

Another study finds evidence of active volcanism on Venus

Changes in volcanic vent on Venus over eight months
Click for original image.

Using archival data from the Magellan spacecraft that orbited Venus in the early 1990s scientists think they have identified an active vent that appeared to change shape based on radar images taken eight months apart.

From the abstract of their paper:

We examine volcanic areas on Venus that were imaged two or three times by Magellan and identify a ~2.2 km2 volcanic vent that changed shape in the eight months between two radar images. Additional volcanic flows downhill from the vent are visible in the second epoch images, though we cannot rule out that they were present but invisible in the first epoch due to differences in imaging geometry. We interpret these results as ongoing volcanic activity on Venus.

This result is different that other research released last month that used Magellan data to identify geological features on Venus most likely to be active. In today’s results the scientists think they have spotted an actual volcanic eruption, as shown in the two images to the right. The image is taken from Figure 2 of the paper, with the changes in the center bottom vent clearly visible.

There is much uncertainty in these results that must be mentioned. The images are not optical but radar, so the scientists had to do a lot of computer processing to get the final result. They also compared this work with computer simulations to help confirm their conclusions.

The results also leave open the question of the total amount of volcanism presently active on Venus. As the scientists note in their conclusion, “With only one changed feature, we cannot determine how common currently active volcanism is on Venus.”

Nonetheless, the research using both new and archival data in the past thirty years is increasingly telling us that there is some active volcanism on Venus, hidden beneath its thick hellish cloudy atmosphere.

Reassessed fuel measurements give Mars Odyssey until 2025 before it runs out

Using more refined methods for measuring the fuel left on Mars Odyssey, the oldest orbiter circling Mars at this time, engineers have determined that it will not run out until 2025, not this year as previously thought.

Mars Odyssey has been in orbit around Mars since 2001. The fuel is used by thrusters to help maintain the spacecraft’s orientation, which is mostly done by reaction wheels, or gyroscopes. We should therefore not be surprised if by 2025 engineers figure out a way to get the reaction wheels to do the whole job, when the fuel runs out.

Virgin Orbit pauses operations; seeks funding

Virgin Orbit today paused all operations for at least a week, putting almost its entire staff on furlough as it seeks new financing.

Chief Executive Dan Hart told staff that the furlough would buy Virgin Orbit time to finalise a new investment plan, a source who attended the event told Reuters news agency. It was not clear how long the furlough would last, but Mr Hart said employees would be given more information by the middle of next week.

If Virgin Orbit dies, its death will be because a British government agency killed it. The company had planned on launching from Cornwall in the early fall of 2022, at the latest, and then do several other launches in 2022, all of which would have earned it revenue. Instead, the UK’s Civil Aviation Authority (CAA) delayed issuing the launch license until January 2023, about a half a year later, preventing Virgin Orbit from launching for that time and literally cutting it off from any ability to make money. The result was that it ran out of funds.

Obviously the launch failure that followed the CAA’s approval did not help. Nor did the company’s decision to rely on only one 747 to launch its satellites. Nonetheless, the fault of this company’s death can mostly be attributed to a government bureaucracy that failed in its job so badly that it destroyed a private company.

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

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.

Geological evidence of past glacier found in Mars’ dry equatorial regions

Overview map

Scientists have uncovered geological evidence of a past glacier in westernmost end of the giant Martian canyon Valles Marineris, right at the point where it transitions into the complex chaos region dubbed Noctis Labyrinthus. The white dot on the map to the right indicates the location.

The surface feature identified as a “relict glacier” is one of many light-toned deposits (LTDs) found in the region. Typically, LTDs consist mainly of light-colored sulfate salts, but this deposit also shows many of the features of a glacier, including crevasse fields and moraine bands. The glacier is estimated to be 6 kilometers long and up to 4 kilometers wide, with a surface elevation ranging from +1.3 to +1.7 kilometers. This discovery suggests that Mars’ recent history may have been more watery than previously thought, which could have implications for understanding the planet’s habitability.

What we’ve found is not ice, but a salt deposit with the detailed morphologic features of a glacier. What we think happened here is that salt formed on top of a glacier while preserving the shape of the ice below, down to details like crevasse fields and moraine bands,” said Dr. Pascal Lee, a planetary scientist with the SETI Institute and the Mars Institute, and the lead author of the study. [emphasis mine]

You can read the paper here [pdf]. The research specifically suggests that near surface water ice in the dry equatorial regions of Mars could have been there much more recently that previously believed. It also suggests, by the rarity of this discovery, that there is likely almost no near surface ice in the equatorial regions, at present.

Perseverance captures a movie of Ingenuity’s 47th flight on Mars

Ingenuity shortly after take-off on its 47th flight
Click for full movie.

Overview map
Click for interactive map.

During Ingenuity’s 47th flight on Mars on March 9, 2023, one of Perseverance’s high resolution camera’s took rapid-fire images of the helicopter’s take-off and initial flight, from which the science team created a movie.

The overview map to the right provides the context for that movie at the link. The blue dot marks Perserverance’s location, with the yellow lines indicating the approximate area seen in the movie. The smaller green dot and line indicates Ingenuity’s take-off point and part of its flight seen in the movie, with the larger green dot its landing spot. From the press release:

This video shows the dust initially kicked up by the helicopter’s spinning rotors, as well as Ingenuity taking off, hovering, and beginning its 1,444-foot (440-meter) journey to the southwest.

At take-off Ingenuity was 394 feet away from Perseverance.

Firefly wins its second NASA contract to land payloads on the Moon

Capitalism in space: Firefly announced today that it has won a $112 million NASA contract to use its Blue Ghost lunar lander to bring three instruments to the Moon, one into orbit and two on the ground on the far side of the Moon.

Before landing on the Moon, the company’s Blue Ghost transfer vehicle will deploy the European Space Agency’s Lunar Pathfinder satellite into lunar orbit to provide communications for future spacecraft, robots, and human explorers. After touching down on the far side of the Moon, the Blue Ghost lunar lander will deliver and operate NASA’s S-Band User Terminal, ensuring uninterrupted communications for lunar exploration, and a research-focused payload that measures radio emissions to provide insight into the origins of the universe.

The NASA press release provides more details about the three payloads.

This is Firefly’s second NASA lunar lander contract. The first is scheduled to land in 2024 and deliver ten NASA science instruments to Mare Crisium, the large mare region in the eastern side of the Moon’s visible hemisphere. This second flight is tentatively scheduled to launch in 2026.

NASA agrees to Axiom’s third planned commercial passenger mission to ISS

NASA today announced that it has given Axiom the go-ahead for its third planned commercial passenger mission to ISS, now tentatively scheduled for November 2023.

Axiom Mission 3 (Ax-3) is expected to spend 14 days docked to the space station. A specific launch date is dependent on spacecraft traffic to the space station and in-orbit activity planning and constraints. NASA and Axiom Space mission planners will coordinate in-orbit activities for the private astronauts to conduct in coordination with space station crew members and flight controllers on the ground.

As NASA did in announcing its agreement to Axiom’s previous flight, the agency’s press release makes believe it “selected” Axiom for this flight, as if it had the power and right to do so. Hogwash. Axiom has purchased the flight from SpaceX, and wishes to rent space on ISS for two weeks for its customers. All NASA has done is agree to the deal, while also charging Axiom very large fees for that rental.

SpaceX launches cargo Dragon to ISS

Capitalism in space: SpaceX tonight successfully used its Falcon 9 rocket to put a cargo Dragon capsule into orbit and on its way to ISS.

The first stage successfully completed its seventh flight, landing on a drone ship in the Atlantic. The Dragon freighter is making its third flight, and will dock with ISS on the morning of March 16th.

The 2023 launch race:

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

American private enterprise now leads China 18 to 9 in the national rankings, and the entire world combined 18 to 15. SpaceX alone leads entire world, including the rest of the U.S., 17 to 16.

A Martian crater, ice, and dust devil tracks

A Martian crater, ice, and dust devil tracks
Click for original image.

Cool image time! The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on January 2, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It is once again a terrain sample image, taken not for any specific research but to fill a gap in the schedule so as to maintain the camera’s proper temperature.

What this picture shows is that even though Mars has a thin atmosphere that produces dust devils, the propagation of dust devils is not uniform across the red planet’s surface. In this picture there are a lot of devil tracks, going in many different directions. Yet few of the many cool images I post from MRO show this number of tracks. In many cases the ground might not be agreeable to leaving tracks, but that cannot be the entire explanation.
» Read more

Potential Artemis-3 landing site on the Moon

The landing zone for the Artemis-3 mission to the Moon

Overview map

The panorama above was released today by the Lunar Reconnaissance Orbiter (LRO) science team, and shows one of the candidate landing sites (arrow) where Starship could land as part of the Artemis-3 mission to the Moon.

The map of the south pole to the right, created from LRO images and annotated by me, gives the context. The yellow lines indicate the approximate area covered by the panorama. The terrain here is rugged, to put it mildly. As the science team notes,

Imagine the view from the summit; it rises more than 5000 meters (16,400 feet) above its base. Off in the distance, you could see a 3500 meter (11,480 feet) tall cliff. One could argue that the sheer grandeur of this region makes it a prime candidate. But then again, a landing here might be too exciting?

That 11,480-foot-high cliff is the crater wall to the right of the arrow. Make sure you go to the link to view the original image. This will be a spectacular place to visit. Whether the astronauts however will be able to find out anything about ice in the shadowed crater floor thousands of feet below them remains questionable.

Artemis-3 is presently scheduled for 2025 but no one should be surprised if it is delayed.

LeoLabs to establish radar facility in Argentina

LeoLabs, a private commercial company aiming to provide orbital tracking of all space objects as small as two centimeters, has announced plans to establish its seventh global radar facility in Argentina.

The S-band radar, scheduled to be completed by the end of the year, will be located on the archipelago of Tierra del Fuego. “The Southern Hemisphere has not been well covered for space safety and space domain awareness,” LeoLabs CEO Dan Ceperley told SpaceNews. “There are a lot of conjunctions close to the North Pole and the South Pole. This radar will make a very meaningful improvement in the tracking of those conjunctions.”

Currently, LeoLabs tracks objects in low-Earth orbit with phased array radars in Alaska, Australia, Portugal’s Azores archipelago, New Zealand, Texas and Costa Rica.

The company essentially competes with the Space Force in tracking object in orbit, and has raised more than $100 million in private investment capital to build its ground stations.

Splats on Mars!

Splats on Mars
Click for original image.

Cool image time! The picture to the right, cropped and sharpened to post here, was taken on February 3, 2023 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows a number of crater splats of varying sizes. If you look at the full image, you will find several even bigger splats to the north of the one in the picture to the right. You will also see many more similar-sized crater splats to the south.

I cannot provide any confident explanation about what caused these splats, other than to assume that most here are secondary impacts from ejecta thrown out by a larger impact somewhere nearby. I also assume all these small impacts occurred at the same time because they all appear to have hit the ground when it had the same thick liquid consistency, a condition that was probably temporary. Note for example how many of the other craters in the full image do not have this same splattered look.
» Read more

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

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.

Hubble looks at a nearby dwarf galaxy

A nearby dwarf galaxy
Click for original image.

Cool image time! The photo to the right, cropped, reduced, and sharpened to post here, was taken by the Hubble Space Telescope as part of a continuing project to capture high resolution images of every nearby galaxy, which in this particular case the caption describes as follows:

UGCA 307 hangs against an irregular backdrop of distant galaxies in this image from the NASA/ESA Hubble Space Telescope. The small galaxy consists of a diffuse band of stars containing red bubbles of gas that mark regions of recent star formation, and lies roughly 26 million light-years from Earth in the constellation Corvus. Appearing as just a small patch of stars, UGCA 307 is a diminutive dwarf galaxy without a defined structure — resembling nothing more than a hazy patch of passing cloud.

The red regions of star formation are significant, as they indicate that even in a tiny galaxy like this it is possible for there to be enough gas and dust to coalesce into new stars.

Astronomers living on a world inside this galaxy have an advantage over astronomers on Earth. There is no large galaxy like the Milky Way blocking their view of the cosmos in one direction. They can see it all, even in directions looking through UGCA 307.

Russia and China launch satellites

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.

Curiosity looks ahead: Which way to go?

Curiosity's view on March 11, 2023
Click for high resolution version. For original images, go here and here.

Overview map

How about a bonus weekend cool image! The panorama above, created from two pictures taken on March 11, 2023 by the right navigation camera on the Mars rover Curiosity, gives us a wonderful view of the alien Martian terrain that the rover is presently within. It also shows us the dilemma mission planners have in planning the rover’s future travels.

The red dotted line on both the panorama and the overview map to the right indicates the planned route. The yellow lines on the map indicates the approximate area viewed by the panorama. The blue dot marks Curiosity’s present position, where it is presently in the middle of a drilling campaign in the marker layer where it sits.

The plan had been to travel to the east of what I like to call the the hill of pillows (in the middle of the panorama). Yet, it appears from this navigation image that the terrain might be less difficult to the west. Both routes will get the rover to its goal in Gediz Vallis.

I have no idea what the mission planners will decide to do. I am just a tourist going along for the ride, and sharing the journey with my readers. This is the first time any human spacecraft has ever traveled through such mountainous terrain on any planet.

Relativity scrubs launch today again

Relativity today was once again unable to complete the first launch of its Terran-1 prototype rocket.

The failure to launch was not for want of trying. The first countdown was first put on hold at T-1:10 when a boat entered the range. Once removed, the launch team picked up the count from that point without any recycle, but at T-0 the rocket’s internal computer sensed an issue and aborted the launch.

The launch team then reassessed, adjusted that issue, and tried again for a launch at the last second of the launch window, essentially duplicating the circumstances of an instantaneous launch window. The count this time got down to T-45 seconds when once again the rocket’s internal computer sensed an issue and aborted the launch.

No word yet on when the company will try again. If anything, Relativity’s launch team is getting a lot of practice and training with each launch attempt, critical knowledge needed for future launches.

Some space startups threatened by Silicon Valley Bank failure

Link here. The companies mentioned in the article are Astra, BlackSky, Planet, Redwire, Rocket Lab, and Space Perspective.

Rocket Lab has about 8% of its cash assets now trapped by the closure. All the companies had loans from Silicon Valley Bank, some of which were paid off prior to the crash. This quote suggests the situation is critical for some space startups:

“It’s a very serious situation,” said a space sector entrepreneur who asked not to be identified. “Our balance is suddenly only $450. There has been no communication from SVB even after the event became known. Our primary SVB liaison, who has been very attentive in the past, is unreachable by any means. It’s appalling.”

Live stream of the first launch attempt of Relativity’s Terran-1 rocket

I have embedded below the live stream of the first launch attempt of Relativity’s Terran-1 rocket, presently scheduled with a three hour launch window that opens at 1:00 pm (Eastern). The live stream will go live at noon.

The first launch of a new rocket is exceedingly challenging, and almost never succeeds. The key however is the data obtained that can be used to make the next launch attempt a success.

A lot rides on this launch. Relativity already has obtained $1.2 billion in launch contracts plus more than $1 billion in private investment capital, despite having never launched anything. Moreover, the Terran-1 rocket is really a prototype for its larger Terran-R rocket, which is intended to compete directly for the larger payloads that companies like SpaceX and ULA launch.

» Read more

Ingenuity completes 47th flight, scouting ahead of Perseverance

Ingenuity sitting ahead of Perseverance, on the delta
Click for original image.

Overview map
Click for interactive map.

Though the science team has not, as of this posting, added the flight to Ingenuity’s flight log, according to the interactive map showing the positions of both Ingenuity and Perseverance on Mars, the helicopter completed its 47th flight yesterday as planned.

An annotated version of that map is to the right. The larger green dot marks Ingenuity’s new position. The smaller green dot marks its position when the panorama above was taken on February 27, 2023, capturing the helicopter in the distance (as indicated by the arrow). The yellow lines indicate the approximate area covered by that panorama. The blue dot marks Perseverance’s present position.

The flight’s planned distance was to go 1,410 feet to the southwest and “image science targets along the way.” As the helicopter also flew above Perseverance’s planned route, as indicated by the red dotted line, it also provided the rover team information about the ground Perseverance will travel along the way. Since the terrain here is generally not very rough, the information is not critical for route-picking. It might however spot some geological feature that bears a closer look that would not have been noticed by the rover alone.

Biden administration proposes more budget increases for NASA

In releasing its proposed federal budget for 2024 with many major spending increases, the Biden administration has also proposed a significant increase in NASA’s budget. the third year in a row it has done so.

The shortened summary version of the Biden budget proposal [pdf] covers its proposals for NASA in two pages, with the most important proposals as follows:

  • A half billion dollar increase in the budget for the Artemis program for a total of $8.1 billion.
  • A commitment to partner on Europe’s ExoMars Franklin rover mission, replacing Russia.
  • $949 million to develop the Mars sample return mission to bring back Perseverance’s core samples.
  • $180 million to begin development of “a space tug” that can de-orbit ISS as well as “be useful for other space transportation missions.”
  • $1.39 billion for developing new space technologies, an increase of $190 million.

The last two items will likely be money offered to many new commercial startups.

Though we can expect some resistance by the Republican House to most of the budget increases in the overall Biden budget proposal, expect Congress to rubber stamp the NASA increases, as it has done routinely in recent years. Congress might shift or reject some of these ideas, but generally, when all is said and done, it will only make superficial changes. NASA will likely more money.

House subcommittee proposes five bills that would change FCC operations

The House Energy and Commerce subcommittee on March 8, 2023 approved five bills affecting the FCC and how it operates.

The first bill [pdf], Satellite and Telecommunications Streamlining Act, is the most significant, as it appears to try to establish legal limitations and rules specifically designed to address the FCC’s recent effort to expand its power and regulatory authority beyond what its legal authority allows. While most of the bill’s language appears to allow the FCC to do what it wants (including limiting or regulating future space stations and setting lifetime limits on all orbiting spacecraft), it also insists that licenses be approved quickly and adds this caveat:

[T]he Commission may not establish performance objectives that conflict with any standard practice adopted by the Secretary of Commerce.

In other words, the FCC cannot grab the regulatory responsibilities of other agencies, especially the Commerce Department, where Congress in recent years has been trying to shift most commercial regulatory authority.

Nonetheless, this bill appears to mostly endorse the FCC ‘s power grab.

The bills still have to be approved by the full committee, then approved by the full House, then approved by the Senate, and then signed by the president.

Russia considering bringing Soyuz launched on February 23rd home earlier

According to unnamed sources in the Russian press, Roscosmos officials are considering bringing the Soyuz capsule launched on February 23rd to ISS back to Earth in June rather than September, while moving up the launch of the next Soyuz manned mission.

As noted by space journalist Anatoly Zak:

The existence of such plans indicated that specialists had still been concerned about the possibility of a critical leak in the thermal control system of the fresh crew vehicle similar to those that hit two previous transport ships. Such change in schedule would also debunk the official explanation of previous two accidents by Roskosmos and NASA as caused by meteors rather than production defects.

The two previous coolant leaks occurred about three months after launch. Bringing the Soyuz home in June would get it home in about three and a half months, suggesting the Russians are no longer confident their Soyuz and Progress spacecraft can withstand six months in space.

If this plan is adopted it will also put less strain on the crew slated to come home on that Soyuz. Their mission has been planned for six months. Extending it to a full year without any prior preparation risks serious health issues.

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

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.

1 86 87 88 89 90 469