Tag: engineering

SpaceX officials provide cause of loss Falcon 9 first stage after successful landing

9:45 am

Damaged Falcon 9 booster laying on its side on drone ship as it returns to port
The damaged Falcon 9 booster laying on its side
on its drone ship as it returns to port.

At a press conference yesterday, SpaceX officials outlined the results of its investigation into the loss of Falcon 9 first stage when it fell over on its drone ship shortly after a successful landing.

Speaking at a news conference following a flight readiness review for the Crew-10 mission to the International Space Station, Bill Gerstenmaier, vice president of Build and Flight Reliability at SpaceX, said about 85 seconds into the launch of the Starlink 12-20 mission, there was a fuel leak in the first stage booster, tail number B1086, and kerosene sprayed onto a hot component of the engine. He said that caused it to vaporize and become flammable.

Because there wasn’t enough oxygen to interact with the leaked fuel, it didn’t catch fire during the ascent, he said. But about 45 seconds after B1086 landed on their droneship, ‘Just Read the Instructions,’ there was enough oxygen available to get into the engine compartment and a fire broke out. “It subsequently blew out the barrel panel on the side of the rocket, just like it was designed to. The fire was all contained in the engine compartment,” Gerstenmaier said. “Even if we would’ve had a problem during ascent, this shows that the fire and the damage would be contained in just a single engine out, which still allows us to accomplish the entire mission.”

The company is still working to determine the cause of the leak itself.

Though the article and video at the link make a big deal about the FAA grounding SpaceX’s Falcon 9 fleet, the agency’s actions here were quite trivial compared to its behavior when Biden was president. It grounded the fleet for only a few days, while SpaceX did its initial investigation, and then immediately accepted the above conclusions from SpaceX and lifted the grounding, even though the company has not yet determined the leak’s cause.

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Space Force awards development contracts to eight startups

9:27 am

The Space Force’s commercial office, dubbed SpaceWERX, announced March 8, 2025 that it has awarded development contracts to eight startups totaling $440 million.

Each STRATFI agreement is worth up to $60 million, with SpaceWERX and several defense agencies contributing up to $30 million per project. Private investors provide matching funds to scale innovations that have already demonstrated viability through prototype development.

The winners — Albedo, Beast Code, CesiumAstro, Gravitics, LeoLabs, Rise8, Umbra and Xona — were announced March 8 at an event at the Capital Factory in Austin, Texas.

Of these companies, Gravitics is probably the most interesting, as it is attempting to become a major American provider of space station modules. It already has a $125 million contract with Axiom to build a small module for that company’s station. This new contract from the Space Force suggests the Pentagon is considering launching its own space station, or possibly attaching a Gravitics module to one of the four private stations presently being built. Below is my present ranking of these four stations:

  • Haven-1, being built by Vast, with no NASA funds. The company is moving fast, with Haven-1 to launch and be occupied in 2026 for a 30 day mission. It hopes this actual hardware and manned mission will put it in the lead to win NASA’s phase 2 contract, from which it will build its much larger mult-module Haven-2 station..
  • Axiom, being built by Axiom, has launched three tourist flights to ISS. There are rumors it is experiencing cash flow issues, but it is also going to do a fourth ISS tourist flight this spring, carrying passengers from India, Hungary, and Poland.
  • Orbital Reef, being built by a consortium led by Blue Origin and Sierra Space. Though Blue Origin has apparently done little, Sierra Space has successfully tested its inflatable modules, including a full scale version, and appears ready to start building the station’s modules for launch.
  • Starlab, being built by a consortium led by Voyager Space, Airbus, and Northrop Grumman. It recently had its station design approved by NASA.
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Blue Ghost activates NASA drill, prepares for hot lunar noon

9:16 am

Map of lunar landing sites
Landing sites for both Firefly’s Blue Ghost and
Ispace’s Resilience

More than a week after landing in Mare Crisium, ground controllers have prepared Firefly’s Blue Ghost lunar lander for surviving the very hot lunar noon while also activating NASA’s LISTER drill, which proceeded to successfully drill down into the lunar surface below the lander.

Mounted below Blue Ghost’s lower deck, NASA’s Lunar Instrumentation for Subsurface Thermal Exploration with Rapidity (LISTER) payload is a pneumatic, gas-powered drill developed by Texas Tech University and Honeybee Robotics that measures the temperature and flow of heat from the Moon’s interior.

I have embedded below the video of this drilling operation. At this moment it appears that nine of the lander’s payloads have completed their tasks successfully, with no indication yet that the tenth playload will have problems. All in all, Firefly has succeeded in establishing itself now as the leading private company capable of launching spacecraft to other worlds.
» Read more

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Blue Ghost landed almost dead center within its target zone

10:55 am

Blue Ghost on the Moon
Click for before and after blink animation

The picture to the right, taken by Lunar Reconnaissance Orbiter (LRO) prior to the successful landing of Firefly’s Blue Ghost lunar lander, shows its entire landing region. The inset in the lower left is a picture taken by LRO on March 3, 2025, after landing.

The full picture was taken near sunset, with sunlight coming from the left. The inset was taken at sunrise, with sunlight coming from the right. This explains the difference in shadows between the two. Blue Ghost is the white dot in the inset with its long shadow, the black streak, cutting through the nearby crater. The first picture taken from the lander after landing looked down that shadow, looking across the crater.

The new picture tells us that Blue Ghost landed almost dead center in its target zone, indicating that the engineering worked as planned. The lander also used its computer brain to pick a good landing spot and avoid the nearby craters.

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A galactic ball and spiral interact

9:55 am

A galactic ball and spiral interact
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken by the Hubble Space Telescope as part of a study of the star populations in these two interacting galaxies. From the caption:

Arp 105 is a dazzling ongoing merger between an elliptical galaxy and a spiral galaxy drawn together by gravity, characterized by a long, drawn out tidal tail of stars and gas more than 362,000 light-years long. The immense tail, which extends beyond this image from NASA’s Hubble Space Telescope, was pulled from the two galaxies by their gravitational interactions and is embedded with star clusters and dwarf galaxies.

The three blue objects on the outskirts of both galaxies are thought to be active star-forming regions. Whether all three are part of this collision is unclear, as the object on the lower right might simply be a foreground object based on the available data.

What makes this galactic pair so intriguing is that the two galaxies are so different with very different theorized histories. Elliptical galaxies (“the ball”) are thought to be very old, the result of the long term evolution of spirals. You would therefore not think an elliptical would normally interact with a spiral, as their ages are likely so dissimilar.

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Anonymous sources: Starship will need a major rebuild after two consecutive failures

9:38 am

Starship just before loss of signal
Starship just before loss of signal on March 6, 2025

According to information at this tweet from anonymous sources, parts of Starship will likely require a major redesign due to the spacecraft’s break-up shortly after stage separation on its last two test flights.

These are the key take-aways, most of which focus on the redesign of the first version of Starship (V1) to create the V2 that flew unsuccessfully on those flights:

  • Hot separation also aggravates the situation in the compartment.
  • Not related to the flames from the Super Heavy during the booster turn.
  • This is a fundamental miscalculation in the design of the Starship V2 and the engine section.
  • The fuel lines, wiring for the engines and the power unit will be urgently redone.
  • The fate of S35 and S36 is still unclear. Either revision or scrap.
  • For the next ships, some processes may be paused in production until a decision on the design is made.
  • The team was rushed with fixes for S34, hence the nervous start. There was no need to rush.
  • The fixes will take much longer than 4-6 weeks.
  • Comprehensive ground testing with long-term fire tests is needed. [emphasis mine]

It must be emphasized that this information comes from leaks from anonymous sources, and could be significantly incorrect. It does however fit the circumstances, and suggests that the next test flight will not occur in April but will be delayed for an unknown period beyond.

I think the tweet however is much too pessimistic. If the problems are all within the fuel lines, engine wiring, and the power unit, they are well localized. Moreover, the design of these components on version 1 of Starship apparently worked reasonably well, which gives them a good basis for that redesign. Nonetheless, if these facts are correct, my guess is the next test flight won’t occur before June.

The one saving grace is that FAA red tape is clearly no longer an additional obstacle. It is very clear now that with the change from Biden to Trump it is letting SpaceX lead all investigations, and immediately accepting its conclusions and fixes, rather than sitting on those conclusions as it retyped them for weeks or months in its own report.

Hat tip to reader Richard M.

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After a decade of development, ESA finally starts testing a part of its Callisto grasshopper

9:12 am

Callisto's basic design
Callisto’s basic design

My heart be still! First proposed in 2015 as Europe’s answer to SpaceX’s Falcon 9, the European Space Agency, in partnership with Japan, has finally begun acoustical testing of just one part of its Callisto grasshopper-type reusable test prototype, as shown on the right.

Callisto consists of five main sections: the Aft Bay, which includes the engine and landing legs, the LH2 Tank, the LOx Tank, the VEB, and the Fairing. The VEB houses much of the demonstrator’s electronics, including its onboard computer, avionics, and a reaction control system that uses H2O2 propellant. Its distinctive features include a pair of control fins.

In addition to confirming that the VEB had been transported to the CNES facilities in Toulouse, the 4 March Institute of Space Systems update also revealed that the acoustic test campaign for the key Callisto module had commenced last week. The acoustic test campaign simulates the intense sound vibrations the demonstrator will experience during flight to ensure structural integrity and component reliability.

The whole project has a budget of $100 million. The first test hop won’t occur until 2026, eleven years after the project began, and six years behind its original launch date. In that same time, SpaceX has completed several hundred commercial landings of its Falcon 9 first stage, reusing those stages up to two dozen times.

Nor is Callisto part of any program to develop a similar reusable rocket. It is a typical dead-end government project, with ESA having no clear goal to apply it commercially. The best Europe can hope for is that the engineering lessons from its tests will be given freely to the new European commercial rocket startups, so that they can use it someday.

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China launches classified communications test satellite

8:58 am

China yesterday successfully launched a classified communications satellite “to carry out multi-band and high-speed communication technology validation, its Long March 3B rocket lifting off from its Xichang spacesport in southwest China.

All we really know about this satellite is that it is part of series. Nor did China reveal where the core stage and four strap-on boosters of the rocket, which use very toxic hypergolic fuels, crashed inside China.

The leaders in the 2025 launch race:

26 SpaceX
10 China
3 Russia
2 Rocket Lab

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Space Force’s X-37B completes seventh flight, lasting 434 days

8:22 am

With landing on March 7, 2025 at Vandenberg in California, of one of the Space Force’s two X-37B reusable mini-shuttles, the military completed the seventh total flight, this one lasting over 434 days.

The mission achieved a number of important milestones. First, it was the first launched on SpaceX’s Falcon Heavy rocket. Previously launches had used both ULA’s Atlas-5 as well as SpaceX’s Falcon 9.

Second, the spacecraft successfully demonstrated its ability to use aerobraking to adjust its orbit.

The Space Force also claimed other classified experiments on board “tested space domain awareness technology experiments that aim to improve the United States Space Force’s knowledge of the space environment.” That’s however all they told us.

Because the Space Force has stopped telling us which of the two X-37B’s is flying on each launch, it is not clear the Space Force even has a fleet of two any longer. It could be one has been retired.

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Intuitive Machines confirms Athena fell over at landing; ends mission

1:33 pm

Athena on its side on the Moon

Artist rendering of lander on Moon

Intuitive Machines today officially ended its Athena lunar lander mission after it released a picture taken from the top of the lander showing clearly that it had fallen over on its side after landing.

That picture, cropped, reduced, and brightened to post here, is to the right. You can clearly see two of the landing legs in the air, with the horizon in the background.

“With the direction of the sun, the orientation of the solar panels, and extreme cold temperatures in the crater, Intuitive Machines does not expect Athena to recharge,” the company stated. “The mission has concluded and teams are continuing to assess the data collected throughout the mission.”

This is the second Intuitive Machines lunar lander to tip over. More and more it does appear that the tall design of this lander is fundamentally flawed. The artist rendering to the right illustrates this. Most unmanned lunar landers are much wider than they are tall. Intuitive Machines’ Nova design has the lander’s height matching the spread of its legs. It creates a center of gravity high enough that the lander will tip over too easily if conditions are not perfect.

The company denies this, saying the center of gravity is much lower than this graphic makes it appear, but the proof is in the pudding. Their design has tried to land on the Moon twice, and both times the lander tipped over.

It is not clear what the company can do to fix this. Expanding its diameter to lower its height is a major redesign. It also might make the lander too wide to fit inside most rocket fairings. A better solution might be to redesign the legs, making their spread wider, and even increasing their number.

Fortunately, NASA’s shift to capitalism in space has produced a number of different companies building lunar landers. Firefly’s Blue Ghost is clearly a success. In June Ispace will make its second attempt to soft land its private lander design on the Moon. And Astrobotic has a contract to try again after it had a fuel line leak after launch last year that prevented it from even attempting a landing.

And of course, Intuitive Machines is still in the game. It has a contract for one more landing mission, plus a mission to put two data relay satellites in lunar orbit.

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India’s Vikram lunar lander: Data suggests there could be more water impregnated in more places on the Moon

12:16 pm

According to scientists analyzing the data sent back from India’s Vikram lunar lander, it appears that water could be impregnated in the upper lunar soil in more places than previously predicted.

You can read their paper here [pdf]. One instrument on the lander measured the temperature of the soil down about four inches, and found the temperature to be 25 degrees Celsius warmer than expected. That location was on a sunward-facing slope, so it was expected to be warmer but not by that amount. From the paper’s abstract:

This demonstrates that local topography at metre scales can alter temperature at high latitudes, unlike equatorial regions. Numerical model calculations using ChaSTE measurements, suggest that larger poleward facing slopes(>14°) at high latitudes can harbour water-ice, making them promising and technically less challenging sites for future lunar exploration and habitation.

In other words, slopes that get much less sunlight near the poles but are not permanently shadowed could still be cold enough only a few inches below the surface to harbor water molecules.

Sounds good, but I am beginning to sense a bit of blarney in these stories, over-pushing the possible existence of water to encourage more government space funding. It might be true that there is more water molecules in more places than predicted, but rarely do these reports say how much, which I expect will be very very little, in the parts per billion range. Nor do these stories ever consider the processing necessary to extract that water. Based on other data obtained from the Shadowcam instrument on South Korea’s Danuri lunar orbiter, it increasingly seems to me that any water found in polar regions of the Moon could be very slight, or even if in large amounts much more difficult to access than anyone ever mentions.

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French official lauds Ariane 6 launch; demands Europe have its own launch capability

10:08 am

Philippe Baptiste, France’s Minister for Higher Education and Research, yesterday loudly touted the second successful launch of Ariane 6 rocket, even though it occurred years late and costs far more than any other rocket on the market today.

Baptiste did so even as he insisted the Europe must continue to have its own launch capability so that it need not depend on rockets from other countries.

Europe must have sovereignty in space and “not yield to the temptation of preferring SpaceX or another competitor that may seem trendier, more reliable, or cheaper,” Baptiste [said]. “This first commercial launch of Ariane 6 is not just a technical and one-off success. It marks a new milestone, essential in the choice of European space independence and sovereignty. In the labyrinth of the global space race, Ariane 6 is the guiding thread of our strategic autonomy for the years to come.

“We must also collectively advance, as Europeans, on the governance of Europe’s space ambitions. We must ask ourselves all the questions, without taboos. For Europe in space, I am convinced that the European Union must fully assume its role as the political leader in this matter. The challenges are immense, no one knows this better than we do.”

Note Baptiste’s focus on having the European Union (EU) run things, with a focus on Ariane-6, despite its high cost. He was previously head of France’s space agency CNES, which for years has used the EU and the European Space Agency’s (ESA) partners help pay for France’s space program by requiring that all rocket launches be run by ESA’s commercial division, Arianespace.

That situation is now changing, with other ESA nations (Germany, Italy, Spain, and the United Kingdom) all breaking free from Arianespace and instead encouraging the development of competing private rocket startups independent of ESA or Arianespace. Moreover, these ESA partners have aggressive reduced Arianespace’s areas of control. It no longer runs the French Guiana spaceport. Its management of the Vega-C rocket has been transferred back to the Italian company Avio, which builds it. All it now has is Ariane-6, which has limited value because it is so expensive.

So while Baptiste desire for European autonomy matches the efforts of these European countries, his apparent desire to keep all control within the continent’s centralized government authority has been rejected. Europe has a chance to compete, but only because it is freeing its rocket startups from government control.

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Webb captures infrared view of a baby binary star system and its bi-polar jets

9:41 am

A baby binary in formation
Click for original image.

Cool image time! The infrared false-color picture to the right, reduced and sharpened to post here, was released today by the science team of the Webb Space Telescope. It shows the bi-polar jets spewing out from a newly formed binary of two very young stars as their interact during their formation process.

The two protostars responsible for this scene are at the center of the hourglass shape, in an opaque horizontal disk of cold gas and dust that fits within a single pixel. Much farther out, above and below the flattened disk where dust is thinner, the bright light from the stars shines through the gas and dust, forming large semi-transparent orange cones.

It’s equally important to notice where the stars’ light is blocked — look for the exceptionally dark, wide V-shapes offset by 90 degrees from the orange cones. These areas may look like there is no material, but it’s actually where the surrounding dust is the densest, and little starlight penetrates it. If you look carefully at these areas, Webb’s sensitive NIRCam (Near-Infrared Camera) has picked up distant stars as muted orange pinpoints behind this dust. Where the view is free of obscuring dust, stars shine brightly in white and blue.

To put it more simply, the accretion disk for the binary system lies at right angles to the much larger jets. The rotation of that disk as well as the stars causes those jets to flow up and down from the poles, with the existence of two stars producing the complex patterns in those jets.

As this image was focused mostly on studying the upper jet, it does not show the entire lower jet, which extends beyond the lower border.

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SpaceX’s eighth orbital test flight of Starship/Superheavy ends like the seventh flight

4:54 pm

Starship just before loss of signal
Starship just before loss of signal

Today’s eighth orbital test flight of SpaceX’s Starship/Superheavy giant rocket has turned out to be almost identical to the seventh flight, with Superheavy completing its mission with a perfect chopstick catch at the launch tower in Boca Chica and Starship failing just before engine shutdown that would have put it into its orbit.

The screen capture to the right shows that moment. Note that graphic on the far lower right. It indicates that only two of the outside engines are firing, in an asymmetrical configuration. As a result Starship began tumbling, as shown by the fact that the Earth is not visible in the background. Shortly thereafter contact was lost, and I expect the flight termination system took over to destroy the ship. Expect videos from the Caribbean of it burning up overhead in the next day or so.

Superheavy however completed the third ever capture by the launch tower chopsticks. Musk has indicated that the company is pushing to reuse a Superheavy booster as soon as possible. The lose of Starship and the fact that two Superheavy engines shut down prematurely during the boost-back burn after stage separation likely delays that reuse at least one or two test flights. First, this Superheavy had issues, that might be solvable but they nonetheless exist.

More important, the loss of Starship just before its orbital coast once again means SpaceX was unable to do any of its orbital and return test program. It will not make sense to risk the next Starship flight with a used Superheavy when testing Starship has now been delayed twice.

Nor does it matter much. It will take many more launches before this rocket is reliably reusable. The first priority now is to make it more reliable on its first launches. Expect SpaceX to target the next test flight for sometime in mid- to-late April.

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Athena sits at an unknown angle on the Moon, hampering operations

2:25 pm

Athena's landing site 100 miles from the Moon's south pole
Yellow cross indicates Athena’s targeted landing site

According to the CEO of Intuitive Machines, Athena is sitting an an unknown angle on the Moon, impacting the possibility of all surface science operations.

The tilt is hampering their ability to use the high gain antenna which they need use to download most of their data. They do not know the angle, or the cause of this issue. It could simply be that the ground slope is too severe. It is also possible the spacecraft, which has a relatively high center of gravity, fell over on its side because of that slope. Moreover, they do not know at the moment exactly where the spacecraft landed, though they know it landed on Mons Mouton as planned. They need to download pictures from the spacecraft, as well as from Lunar Reconnaissance Orbiter (LRO) in orbit to determine precisely the location and the situation.

It is also unclear what payloads will be impacted by this situation. It could be that most if all could be utilized, but that question cannot be answered until they learn more. I suspect both the mini-rover and the Grace hopper will be affected the most, as the tilt might make it impossible to deploy either.

For Intuitive Machines this situation is very unfortunate. It has sent two unmanned lunar landers, and both have had issues at landing, though it must be emphasized that the issue on today’s second landing might have nothing to do with the company’s engineering at all.

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Is a supermassive black hole is hidden in the Large Magellanic Cloud?

11:45 am

Based on the motions of a number of runaway stars on the edge of the Milky Way that are moving so fast they will leave the galaxy, astronomers believe that many were accelerated not by the galaxy’s own central supermassive black hole but a previously undetected supermassive black hole at the center of the Large Magellanic Cloud, one of the Milky Ways nearby dwarf galaxies.

To make this discovery, researchers traced the paths with ultra-fine precision of 21 stars on the outskirts of the Milky Way. These stars are traveling so fast that they will escape the gravitational clutches of the Milky Way or any nearby galaxy. Astronomers refer to these as “hypervelocity” stars.

Similar to how forensic experts recreate the origin of a bullet based on its trajectory, researchers determined where these hypervelocity stars come from. They found that about half are linked to the supermassive black hole at the center of the Milky Way. However, the other half originated from somewhere else: a previously-unknown giant black hole in the Large Magellanic Cloud (LMC).

You can read the paper here [pdf]. This result was made possible by the very precise location and velocity data of over a billion stars measured by Europe’s Gaia satellite.

Based on the available data, the scientists estimate (with great uncertainty) the mass of this supermassive black hole, which the scientists have dubbed LMC* (pronounced “LMC star”), to be about 600,000 times the mass of the Sun, quite big but significantly less than the mass of the Milky Way’s central black hole, Sagittarius A* (pronounced “A-star”), which is estimated to be about 4.3 million times the mass of the Sun.

The mystery to solve now is why this super massive black hole is so quiet. It has literally emitted no obvious energy in any wavelength in the past seven decades, since ground- and space-based telescopes went into operation capable of detecting such emissions. Even the relatively inactive supermassive black hole at the Milky Way’s center, Sagittarius A* (pronounced “A-star”) emits distinct radio energy that the first radio telescopes were able to detect almost immediately.

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Intuitive Machines’ Athena lander touches down softly; engineers are assessing spacecraft condition

10:55 am

Though Intuitive Machines’ Athena lander has apparently softly landed near the south pole of the Moon, there remains uncertainty about the spacecraft’s status. Engineers have contact with Athena, and are apparently shutting down the landing equipment in order to make Athena safe for surface operations.

Unlike the previous landing, the spacecraft is upright and responding fully as expected. It appears the main issue is the position of Athena relative to the horizon. This is important as it determines the best antenna’s to use to upload and download data to and from Earth.

A full update will be provided at a press conference scheduled for 4 pm (Eastern) today. I have embedded the live stream of that conference below.
» Read more

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Ariane-6 successfully launches for the second time

9:47 am

The European Space Agency’s (ESA) commercial arm, Arianespace, today successfully launched from French Guiana its new Ariane-6 rocket for the second time, this time placing its first commercial payload, a military Earth imaging satellite, into orbit.

As of posting the satellite has not yet been deployed by the upper stage, as several additional engine burns are required over then hour or so to place it in the right orbit. As there were some issues with this upper stage on the rocket’s first launch, the successful completion of these burns is critical for the rocket’s future. So far the first major burn has been completed as planned. UPDATE: The payload has been successfully deployed in the proper orbit.

This was Europe’s first launch in 2025, so there is no change in leader board for the 2025 launch race:

26 SpaceX
9 China
3 Russia
2 Rocket Lab

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India’s space agency ISRO begins construction of second spaceport

9:38 am

India's spaceports
India’s spaceports

After several years getting the real estate as well as the necessary regulatory approvals, India’s space agency, Indian Space Research Organization (ISRO), has now begun construction of it second spaceport, dubbed Kulasekaranpattinam, near the southern tip of India.

The map to the right shows the location. The Sriharikota spaceport has been used by the agency for decades. The Agnikul site was used once by one of India’s rocket startups for a suborbital launch, but it is unclear if it will be upgraded to a full launch site in the future.

Kulasekarapattinam was one of the areas recommended for the launchpad even before the rocket launchpad was set up in Sriharikota due to its strategic geographical location near the equator. It is located on the east coast and there is no land to the south of it, allowing for direct southward launches over the Indian Ocean. This will minimize fuel consumption and maximize payload capacity for small satellite launch vehicles (SSLVs), particularly beneficial for cost-effective commercial satellite launches.

The site also avoids the need for complex “dogleg” manoeuvres around Sri Lanka. The manoeuvre involves a sharp turn or bend in a launch trajectory to avoid collisions or falling debris into populated areas, which would require additional fuel.

As part of the breaking ground ceremonies, ISRO scientists also completed a small suborbital rocket launch from this new site, reaching an altitude of 46 miles before falling back into the Indian Ocean.

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Future now very dim for Lunar Trailblazer

9:26 am

Though engineers are continuing attempts to re-establish contact with the orbiter Lunar Trailblazer as it flies outward after launch, the situation is becoming increasingly grim.

Based on telemetry before the loss of signal last week and ground-based radar data collected March 2, the team believes the spacecraft is spinning slowly in a low-power state. They will continue to monitor for signals should the spacecraft orientation change to where the solar panels receive more sunlight, increasing their output to support higher-power operations and communication.

The problem is that, without communications, the spacecraft was not able to do several mid-course corrections that would have sent it on the right path to the Moon. Though it might still be possible to get it to the Moon, communications must be re-established soon to do so.

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Europa Clipper completes Mars fly-by

9:21 am

Data from Europa Clipper has now confirmed that its March 1, 2025 Mars fly-by was successful, putting it on the right trajectory to do a fly-by of Earth in December 2026.

When Europa Clipper launched, navigators deliberately aimed a little away from Mars to avoid any possibility of a launch error turning into a Mars impact. Since then, they’ve performed three deep-space trajectory correction maneuvers to line up for the encounter. Europa Clipper whizzed by Mars at 17:57 UT, only 2 km away from the target height of 884 km. A final maneuver, planned for March 17th, will correct any residual trajectory error.

Only two instruments were activated, mostly as tests to see if they were operating properly. Though the data has not yet been downloaded back to Earth, engineers say that it appears all worked as expected.

If the Earth fly-by in 2026 is successful, Europa Clipper will rendezvous with Jupiter in April 2030, entering an orbit that will fly past Europa numerous times.

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Blue Ghost lunar surface operations proceeding as planned

9:13 am

According to a Firefly update today, all of Blue Ghost’s planned lunar surface operations are working as planned.

Eight out of 10 NASA payloads, including LPV, EDS, NGLR, RAC, RadPC, LuGRE, LISTER, and SCALPSS, have already met their mission objectives with more to come. Lunar PlanetVac for example successfully collected, transferred, and sorted lunar soil from the Moon using pressurized nitrogen gas.

I have embedded below the video posted at the link of Lunar PlanetVac deploying and then blowing that gas to capture surface soil.
» Read more

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Engineers turn off one more instrument on each Voyager spacecraft

3:57 pm

The Voyager missions
The routes the Voyager spacecraft have
taken since launch. Not to scale.

Due to continuing reductions in the power generated by their nuclear energy sources (after a half century of operation) engineers have now turned off one more science instrument on each Voyager spacecraft in order to extend the spacecrafts’ life as long as possible.

Mission engineers at NASA’s Jet Propulsion Laboratory in Southern California turned off the cosmic ray subsystem experiment aboard Voyager 1 on Feb. 25 and will shut off Voyager 2’s low-energy charged particle instrument on March 24. Three science instruments will continue to operate on each spacecraft. The moves are part of an ongoing effort to manage the gradually diminishing power supply of the twin probes.

Even with this action, the future lifespan of both spacecraft is very limited. It is expected the savings in power will allow both to last about a year longer, well into 2026. In order to keep the Voyagers operating as long as into the 2030s mission engineers are now working up a timeline for shutting down the remaining instruments in a step-by-step manner. In that long run the goal won’t be science gathering but engineering. Can humans keep a spacecraft operating for more than a half century at distances billions of miles away?

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Lunar Reconnaissance Orbiter snaps picture of Blue Ghost on the Moon

11:21 am

Blue Ghost on the Moon
Click for full image. For original of inset go here.

Shortly after Firefly’s Blue Ghost lunar lander touched down within Mare Crisium on the Moon, the science team for Lunar Reconnaissance Orbiter (LRO) used it to capture a picture of lander on the surface of the Moon.

That image is to the right, reduced to post here. The inset was expanded and sharpened to bring out the details, with the arrow showing Blue Ghost, that tiny dot in the center with a shadow to the right.

The Firefly Blue Ghost lunar lander set down on 2nd March 2025. The landing site (arrow) is about 4000 meters from the center of Mons Latreille, a large volcanic cone [seen to the left].

…LRO was 175 kilometers east (19.294°N, 67.956°E) of the landing site when the NACs acquired this dramatic view of the landing site on 02 March 2025 at 17:49 UTC.

Blue Ghost landed shortly after lunar sunrise, and is designed to operate for one full lunar day (fourteen Earth days). Whether it can survive the 14-day-long lunar night won’t be known until the next sunrise.

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Psyche captures Jupiter and Mars on its way to asteroid Psyche

11:02 am

Jupiter and Mars as seen by Psyche
Click for original image.

As part of routine maintenance and calibration, engineers on January 30, 2025 used the cameras on the Psyche asteroid probe to photograph Jupiter, Mars, and several stars, proving all is well with the spacecraft.

Scientists on the imaging team, led by Arizona State University, also took images of the bright stars Vega and Canopus, which have served as standard calibration sources for astronomers for decades. The team is also using the data to assess the effects of minor wiggles or “jitter” in the spacecraft’s pointing system as it points the cameras to different places in the sky. The observations of Jupiter and Mars also help the team determine how the cameras respond to solar system objects that shine by reflected sunlight, just like the Psyche asteroid.

The starfield pictures shown here are long-exposure (five-second) images captured by each camera. By over-exposing Jupiter to bring out some of the background stars in the Taurus constellation, the imagers were able to capture Jupiter’s fainter Galilean moons as well.

The picture to the right, cropped and reduced to post here, might not be much to look at, but it clearly demonstrates the cameras work and the spacecraft can point accurately, and will work as planned when it arrives at the metal asteroid Psyche in August 2029.

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Watch the eighth orbital test launch of SpaceX’s Starship/Superheavy

9:31 am

SpaceX is now targeting a 60-minute launch window on March 6, 2025 beginning at 5:30 pm (Central) for its eighth orbital test launch of its gigantic Starship/Superheavy rocket.

I have embedded the Space Affairs live stream below, as SpaceX’s X feed does not become active until it starts broadcasting about 40 minutes before the opening of that window.

As noted prior to the first launch attempt on March 3, 2025:

This flight has the same essential flight plan as the seventh flight, mainly because the prototype Starship on that previous flight was lost before it could achieve any of its goals. After Superheavy separates and attempts a chopstick landing at Boca Chica, Starship will go into a low orbit that will bring it down over the Indian Ocean. During the coast phase it will attempt to deploy four dummy Starlink satellites to test its deployment equipment, as well as do a Raptor-2 engine restart to demonstrate this works in order to prepare for a full orbit flight on a future test flight, possibly as soon as the next test flight.

Starship will also be testing a new configuration of thermal protection during its return, including leaving some places on its hull with no protection to see how those locations fare.

That first attempt was scrubbed at T-40 seconds because of issues on both Superheavy and Starship. Though it appears the team might have gotten those issues solved and launched, the decision was made to stand down and get them fixed properly, rather than rush things and possibly cause the mission to fail.
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Watch the landing of Intuitive Machines’ Athena lander on the Moon tomorrow

9:21 am

Athena's landing site 100 miles from the Moon's south pole

NASA has now announced its live stream arrangement for the landing of Intuitive Machines’ Athena lander on the Moon tomorrow at 12:32 pm (Eastern).

The live stream will begin about sixty minutes before landing. The NASA live stream is available here. I have also embedded it below.

The map to the right shows the landing site by the yellow “X”, about 100 miles from the Moon’s south pole on a high relatively flat plateau dubbed Mons Mouton. This will be the closest any lander has come to the pole, and was the original site chosen for NASA’s now-canceled VIPER rover. If the landing is successful Athena will land close to a small crater that is believed to have permanently shadowed areas. The plan had been to have VIPER travel into it. Now the small Grace hopper that Athena carries will attempt this instead.

This will also be the second attempt by Intuitive Machines to soft land on the Moon. Its first attempt last year was able to land and communicate back to Earth, but the landing was not completely successful. The lander, named Nova-C as well as Odysseus, was moving too fast sideways when it touched down, thus breaking one leg so that the lander fell on its side.
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France opens public comment period for adapting old French Guiana launchpad for commercial rockets

9:04 am

CNES, France’s space agency that now runs the French Guiana spaceport, is now running public meetings for the public to comment on its plans for adapting the old, long-abandoned Diamant rocket pad there for use by a number of commercial rocket startups.

On 17 February, the first of four public consultation sessions into the construction of the new Multi-Launcher Launch Complex (ELM1) at the Guiana Space Centre was held at Kourou Town Hall. This process allows local residents, stakeholders, and organizations to review the project and provide feedback before construction begins. A second session was completed on 23 February, with the remaining two sessions set for 10 and 18 March.

The construction of ELM1 will include common structures like the nodal building, guard post, offices, and storage areas, as well as more specific structures like assembly and preparation buildings, roads, and fences. The project is subject to a building permit, a unique environmental authorization under the regulations for Classified Installations for Environmental Protection, the Water Law, and a request for exemption from the prohibition on the destruction of protected species.

CNES in 2024 approved seven rocket startups to use the site. It later announced its plan to standardize the launchpad so that all users will have to arrive with identical engineering, something that these startups did not like. This comment period will allow them to voice those objections, and likely get the standardization minimized to only those places where it really matters. For example, the impression initially given was that the assembly and preparation buildings would require matching systems from all companies, something that makes no sense.

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Blue Ghost: Earth’s GPS constellations work on the Moon

8:50 am

Using an engineering test GPS-type receiver built by the Italian Space Agency, engineers have successfully been able to use the GPS-type satellites from two different constellations to pinpoint the location of Firefly’s Blue Ghost lander on the Moon.

The road to the historic milestone began on March 2 when the Firefly Aerospace’s Blue Ghost lunar lander touched down on the Moon and delivered LuGRE, one of 10 NASA payloads intended to advance lunar science. Soon after landing, LuGRE payload operators at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, began conducting their first science operation on the lunar surface.

With the receiver data flowing in, anticipation mounted. Could a Moon-based mission acquire and track signals from two GNSS constellations, GPS and Galileo, and use those signals for navigation on the lunar surface?

Then, at 2 a.m. EST on March 3, it was official: LuGRE acquired and tracked signals on the lunar surface for the first time ever and achieved a navigation fix — approximately 225,000 miles away from Earth.

Obviously, this is a first-time engineering test. A portable version of LuGRE will now have to be developed. However, this success means that any operation on the near side of the Moon will not need the addition of a new GPS-type constellation in lunar orbit. It also will likely simplify the design of any constellation for providing this capability to the far side.

Meanwhile, Blue Ghost continues to operate as planned on the surface, with all instruments functioning and several already collecting data.

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