Tag: engineering

New Webb infrared image reveals galaxy hidden behind outflow from baby star

10:22 am

Webb infrared image of baby star outflow
Click for original image.

Cool image time! The false-color infrared image to the right, cropped, reduced, and sharpened to post here, was taken by the Webb Space Telescope of the outflow from a baby star, dubbed Herbig-Haro 49/50, located about 625 light years away.

The picture was taken to get a better understanding of the flow itself. Earlier infrared images at much lower resolution by the Spitzer Space Telescope had left many features in this outflow unclear. For example, at the head of the outflow the Spitzer infrared image was unable to clearly identify the background spiral galaxy located there. In those earlier images it could have instead been a part of the outflow itself.

The galaxy that appears by happenstance at the tip of HH 49/50 is a much more distant, face-on spiral galaxy. It has a prominent central bulge represented in blue that shows the location of older stars. The bulge also shows hints of “side lobes” suggesting that this could be a barred-spiral galaxy. Reddish clumps within the spiral arms show the locations of warm dust and groups of forming stars. The galaxy even displays evacuated bubbles in these dusty regions

The actual source from which this flow comes remains unconfirmed, though astronomers think the source is one particular protostar about 1.5 light years away.

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South Korean rocket startup Innospace details successful tests of its portable launchpad

9:39 am

Engineering test prototype during tests
Click for original image.

The South Korean rocket startup Innospace has now provided some additional details about its testing of the portable launchpad and strongback that it will use on its first planned rocket launch in July 2025.

The Launch Pad-Vehicle Interface Integrated System Test comprehensively verifies the operational readiness of the launch vehicle and launch pad, covering processes from vehicle assembly and pad integration to vertical erection, propellant supply system checks, and final operational validation. During the test, INNOSPACE confirmed the mechanical and electrical interfaces between the launch pad and vehicle, the transporter erector launcher system, the detachment of the Umbilical, the fuel and oxidizer supply system, and the separation of the launch vehicle hold-down mechanism, ensuring technical reliability and operational stability.

The launch pad that successfully completed the test, is scheduled for maritime transportation to the Alcântara Space Center in Brazil on April 2. Upon arrival in May, it will undergo installation and final verification in the local environment to complete preparations for launch operations. In addition, the launch vehicle used in this test was the HANBIT-Nano Qualification Model (QM), which shares the same specifications—21.8 meters in height and 1.4 meters in diameter—as the Flight Model (FM) scheduled for launch in July.

The company will still need to do these same tests in Brazil at its Alcântara spaceport using the actual rocket, dubbed Hanbit-Nano, before the launch can occur. Thus. meeting that July target date is likely difficult if not impossible. At the same time it does appear the company has a chance of launching before the end of this year.

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Perseverance spots a rock made of many tiny spherules

9:26 am

Rock made of spherules found by Perseverance
Click for wide shot. The original of the inset
can be found here.

In their exploration of the outer flanks of the rim of Jezero Crater, the science team operating the Perseverance rover have discovered an unusual rock different than everything around it, appearing to be made of many very tiny spherules.

The picture to the right illustrates this. The wider picture was taken by Perseverance’s left high resolution camera, with the inset a close-up mosaic of three images taken by the rover’s micro-imager, designed to get very very high resolution pictures of small objects. From the press release:

The rock, named “St. Pauls Bay” by the team, appeared to be comprised of hundreds of millimeter-sized, dark gray spheres. Some of these occurred as more elongate, elliptical shapes, while others possessed angular edges, perhaps representing broken spherule fragments. Some spheres even possessed tiny pinholes! What quirk of geology could produce these strange shapes?

This isn’t the first time strange spheres have been spotted on Mars. In 2004, the Mars Exploration Rover Opportunity spotted so-called, “Martian Blueberries” at Meridiani Planum, and since then, the Curiosity rover has observed spherules in the rocks of Yellowknife Bay at Gale crater. Just a few months ago, Perseverance itself also spied popcorn-like textures in sedimentary rocks exposed in the Jezero crater inlet channel, Neretva Vallis. In each of these cases, the spherules were interpreted as concretions, features that formed by interaction with groundwater circulating through pore spaces in the rock.

Not all spherules form this way, however. They also form on Earth by rapid cooling of molten rock droplets formed in a volcanic eruption, for instance, or by the condensation of rock vaporized by a meteorite impact.

At the moment the science team has no idea which of these theories explains the spherules. That the rock is located on the crater rim, where ejecta from the impact will be found, strongly suggests the impact was the cause, not groundwater flow.

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New research finds cosmic rays hitting the atmosphere cause of the ignition of lightning

9:52 am

Two lightning flashes graphed
Click for original image.

New research has now found that the shower of energy produced when a cosmic ray hits the atmosphere could be a major cause for the ignition of lightning in thunderheads.

You can read the paper here. The two graphs to the right are taken from figure 3 of the paper, and show two different lightning events. The colors represent time, going from green (earliest) to blue to yellow and red (latest). The white dot marks the spot where the lightning flash started. From the article above:

We believe that that most lightning flashes in thunderstorms are ignited by cosmic ray showers,” says the study’s lead author Xuan-Min Shao, a senior scientist at the Los Alamos National Laboratory in New Mexico.

…One of the important things about cosmic ray showers is that they contain antimatter–positrons as well as ordinary electrons. The Los Alamos 3D lightning maps contained strong evidence for positrons. Electrons and positrons are bent in opposite directions by Earth’s magnetic field, so they leave opposite imprints on the lightning’s polarization, which BIMAP-3D also measured.

…Positrons clinched the case for cosmic rays. “The fact that a cosmic ray shower provides an ionized path in the cloud that otherwise lacks free electrons strongly favor the inference that most lightning flashes are ignited by cosmic rays,” the authors wrote.

It remains unclear if cosmic rays cause all lightning flashes or just some. Either way, it is a remarkable thing to consider: Cosmic rays are created in distant interstellar and even intergalactic events. The rays take millions, maybe billions of years to reach Earth. And when they do, they produce lightning in thunderstorms!

Hat tip reader Steve Golson.

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China and SpaceX complete launches

9:03 am

Two more launches since yesterday. First, SpaceX successfully launched a National Reconnaissance Office classified surveillance satellite, its Falcon 9 rocket lifting off shortly before midnight from Vandenberg in California.

The first stage not only completed its fourth flight, landing back at Vandenberg, it did so setting a new record for the shortest turnaround from its previous flight, only ten days previously. The fairings completed their fourth and seventh flights respectively.

China then followed, with its pseudo-company Galactic Energy placing six weather satellites into orbit, its solid-fueled Ceres-1 rocket lifting off from the Jiuquan spaceport in northwest China. China’s state run press provided no information on where the rocket’s lower stages crashed inside China. This was the second launch for Galactic Energy this week, and the nineteenth overall, making it the most successful Chinese pseudo-company. That its rocket is solid-fueled tells us that it is based on missile technology, which also tells us that the company is not really an independent company as we conceive it in the west, but closely controlled and supervised by China’s military.

The leaders in the 2025 launch race:

33 SpaceX
14 China
4 Russia
4 Rocket Lab

SpaceX now leads the rest of the world in successfully launches, 33 to 25.

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High ridge down the center of a big Martian crack

1:15 pm

High ridge down the middle of a Martian canyon
Click for original image.

Cool image time! The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on January 27, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Labeled simply as a “terrain sample,” it was likely taken not as part of any specific research project but to fill a gap in the schedule in order to maintain the camera’s proper temperature.

Whenever the camera team needs to do this, they try to find an interesting object to photograph, and often succeed. In this case they focused on the geology to the right. I suspect that at first glance my readers will have trouble deciphering what they are looking at. Let me elucidate: This this a 2.5-mile-wide canyon, about 1,000 feet deep, that is bisected by a ridge about 500 feet high.

On the sunlight walls of this canyon you can see boulders and debris, with material gathered on the canyon floor. The smoothness of the floor suggests also that a lot of Martian dust, likely volcanic ash, has become trapped there over the eons.
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Firefly releases movie of lunar sunset

9:59 am

Sunset on the Moon
Click for original image.

Using imagery taken by Firefly’s Blue Ghost lander, the company today released a short movie showing sunset on the Moon, from several different angles.

I have embedded that movie below. The picture to the right, cropped, reduced, and sharpened to post here, is one of the photos from that movie. It shows the Sun on the horizon, with the Earth above it and Venus the small bright dot in between.

One alien aspect of the Moon that that while the Sun (and Venus) slowly crossed the sky during Firefly’s two week mission, going from just after sunrise in the east to sunset in the west, the Earth remained stationary in this location above the horizon. This phenomenon occurs because the length of the Moon’s day and its orbit around the Earth are the same length, so that one hemisphere always faces the Earth. Blue Ghost landed in Mare Crisium on the eastern edge of that hemisphere. At that location the Earth always hangs at this spot in the sky.
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Freedom capsule splashes down successfully

3:26 pm

SpaceX’s Freedom capsule has successfully splashed down off the coast of Florida, and has now been fished out of the water.

UPDATE: All four astronauts have now exited the capsule.

In watching the live stream, it is important to once again note that no one involved in this recovery operation is a government employee. The entire operation is being run by SpaceX, a private American company doing this work for profit.

It will take a bit more time before the astronauts come out of the capsule, as they must do some leak checks to make sure everything is safe.

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SpaceX launches 23 more Starlink satellites, including 13 with phone-to-satellite capabilities

2:54 pm

SpaceX today successfully launched another 23 Starlink satellites, its Falcon 9 rocket lifting off from Cape Canaveral in Florida.

The first stage completed its nineteenth flight, landing on a drone ship in the Atlantic.

The leaders in the 2025 launch race:

32 SpaceX
13 China
4 Russia
4 Rocket Lab

SpaceX now leads the rest of the world in successfully launches, 32 to 24.

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More surprises from the Wolf-Rayet star numbered 104 and known for its pinwheel structure

2:03 pm

Keck infrared data of WR104

Among astronomers who study such things, Wolf-Rayet 104 is one of the most well known OB massive stars in their catalog, with the infrared picture to the right illustrating why. The star is actually a binary of massive stars, orbiting each other every eight months. Both produce strong winds, and the collision of those winds results in a glorious pinwheel structure that glows in the infrared.

Such stars are also believed to be major candidates to go supernova and in doing so produce a powerful gamma ray burst (GRB) that would shoot out from the star’s poles. As the orientation of this pinwheel suggests we are looking down into the pole of the system, this star system was actually considered a potentially minor threat to Earth. Located about 8,400 light years away, this is far enough away to mitigate the power of the GRB, but not eliminate entirely its ability to damage the Earth’s atmosphere.

New research now suggests however that despite the orientation of the pinwheel, face-on, the plane of the binary star system is actually tilted 30 to 40 degrees to our line of sight. The press release asks the new questions these results raise:

While a relief for those worried about a nearby GRB pointed right at us, this represents a real curveball. How can the dust spiral and the orbit be tilted so much to each other? Are there more physics that needs to be considered when modelling the formation of the dust plume?

You can read the paper here. It is a quite refreshing read, not just because of its relatively plain language lacking jargon, but because of its willingness to list at great length the uncertainties of the data.

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Isar confirms March 20, 2025 for first launch

11:59 am

Proposed spaceports surrounding Norwegian Sea
Proposed spaceports surrounding Norwegian Sea

The German rocket startup Isar Aerospace has now confirmed that it will attempt the first orbital test launch of its Spectrum rocket on March 20, 2025, lifting off from Norway’s Andoya spaceport.

Isar announced March 17 that the Norwegian Civil Aviation Authority (CAA) issued a launch operator license to the company for its Spectrum rocket, launching from Andøya Spaceport in northern Norway. The launch, called “Going Full Spectrum” by the company, is a test flight of Spectrum with no customer payloads on board. “Our goal is to test each and every component and system of the launch vehicle,” Alexandre Dalloneau, vice president of mission and launch operations at Isar Aerospace, said in a statement about the upcoming launch.

Isar Aerospace did not announce a specific time for the launch, noting the timing would depend on weather as well as range and vehicle readiness.

This launch is also going to be the first vertical orbital rocket launch from the European continent, and will put Andoya ahead of the three other spaceports being developed in the United Kingdom and Sweden. For the two UK spaceports this launch will be especially embarrassing, as both started years before Andoya but have been endlessly hampered by red tape, government interference, and local lawsuits. Norway meanwhile has moved with alacrity in approving Andoya’s permits and Isar’s launch licenses.

As for Isar, this launch puts it in the lead over the half dozen or so new European rocket startups as the first to attempt a launch. None of the others are close to that first launch attempt, though the German startup Rocket Factory Augsburg came close last year. During its last static fire test of the first stage prior to launch the rocket was destroyed in a fire.

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Curiosity’s newest view from the heights

10:06 am

Mars in its glorious barrenness
Click for original image.

Overview map
Click for interactive map.

Cool image time! The panorama above, cropped slightly to post here, was taken today by the right navigation camera on the Mars rover Curiosity. It looks north from the rover’s present location on the flank of Mount Sharp, with the rim of Gale Crater in the far distance about 20 to 30 miles away. Curiosity now sits about 3,000 feet above the floor of the crater.

The blue dot on the overview map to the right marks the rover’s position at this time. The yellow lines indicate the approximate view of the panorama. As with all of the images from both Curiosity and Perseverance, the main impression is a barren and lifeless landscape of incredible stark beauty.

It is now very evident that the Curiosity science team has made the decision to abandon their original route to the west. Instead, they have decided to strike south up into this canyon because it provides them the easiest and fastest route to the boxwork geology to the southwest. It also has them climbing into new geological layers rather than descending into layers that the rover has already seen.

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SpaceX’s manned Freedom capsule has undocked with ISS with its crew of four

12:39 am

SpaceX’s manned Freedom capsule tonight undocked with ISS, carrying with it the two astronauts that launched with it in September as well as the two astronauts that launched on Boeing’s Starliner capsule in June.

At 1:05 a.m. EDT Tuesday, NASA astronauts Nick Hague, Suni Williams, and Butch Wilmore, along with Roscosmos cosmonaut Aleksandr Gorbunov undocked from the space-facing port of International Space Station’s Harmony module aboard the SpaceX Dragon spacecraft.

Splashdown is scheduled for 5:57 pm (Eastern) March 18, 2025 off the coast of Florida. I have embedded the NASA live stream below.

Normally the transfer of control of the station from the old crew to the new one takes about a week. In this case NASA cut that transfer time to only three days because of the political desire to get the Starliner astronauts home more quickly. The irony is that NASA decided to leave them up there for almost seven months more than planned in order to disturb its normal ISS launch and crew schedule as little as possible. This effort now to shorten their spaceflight by a few measly days seems quite trivial in comparison.
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Rocket Lab launches the last of five missions for French satellite company

12:31 am

Rocket Lab today successfully completed the last of a five missions contract for the French satellite company Kinéis, its Electron rocket lifting off from one of its two launch pads in New Zealand.

This was Rocket Lab’s second launch in only two days.

The leaders in the 2025 launch race:

31 SpaceX
13 China
4 Russia
4 Rocket Lab

SpaceX still leads the rest of the world in successfully launches, 31 to 24.

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The next time someone tells you Mars lacks water, show them this picture

1:09 pm

Lots of near surface ice on Mars
Click for original image.

In the past decade orbital images from Mars have shown unequivocally that the Red Planet is not the dry desert imagined by sci-fi writers for many decades prior to the space age. Nor is it the dry desert that planetary scientists had first concluded based on the first few decades of planetary missions there.

No, what the orbiters Mars Reconnaissance Orbiter (MRO) and Mars Express have clearly shown is that, except for the planet’s equatorial regions below 30 degrees latitude, the Martian surface is almost entirely covered by water ice, though it is almost always buried by a thin layer of protective dust and debris. Getting to that ice will be somewhat trivial, however, as it is almost always near the surface.

The picture to the right, rotated, cropped, reduced, and sharpened to post here, is a perfect example. It was taken on January 31, 2025 by the high resolution camera on MRO. At the top it shows part of a small glacial-filled crater surrounded by blobby ground clearly impregnated with ice. That crater in turn sits on the rim of a much larger very-eroded ancient 53-mile-wide crater whose floor, also filled with glacial debris, can be seen at the bottom of this picture. The wavy ridge line at the base of the rim appears to be a moraine formed by the ebb and flow of the glacial ice that fills this larger crater.

None of these glacial features is particularly unique on Mars. I have been documenting their presence now at Behind the Black for more than six years. Yet, I find still that most news organizations — including many in the space community — remain utterly unaware of these revelations. Any new NASA or university press release that mentions the near-surface ice that covers about two-thirds of the planet’s surface results in news stories claiming “Water has been found on Mars!”, as if this is a shocking new fact from a place where little water is found.

It is very shameful that so many reporters and news organizations are so far out of touch with the actual state of the research on Mars.
» Read more

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Webb captures infrared images of five exoplanets orbiting two different stars

10:17 am

Four gas giants in infrared
Click for original image.

Using the Webb Space Telescope, astronomers have taken two different direct false-color infrared images of exoplanets orbiting the stars HR 8799 (130 light years away) and 51 Eridani (97 light years away.

The image of the four gas giants orbiting HR 8799 is to the right, cropped, reduced, and slightly enhanced to post here. From the caption:

The closest planet to the star, HR 8799 e, orbits 1.5 billion miles from its star, which in our solar system would be located between the orbit of Saturn and Neptune. The furthest, HR 8799 b, orbits around 6.3 billion miles from the star, more than twice Neptune’s orbital distance. Colors are applied to filters from Webb’s NIRCam (Near-Infrared Camera), revealing their intrinsic differences. A star symbol marks the location of the host star HR 8799, whose light has been blocked by the coronagraph. In this image, the color blue is assigned to 4.1 micron light, green to 4.3 micron light, and red to the 4.6 micron light.

The Webb false color infrared picture taken of one of the exoplanets orbiting the star 51 Eridani is also at the link, showing “a cool, young exoplanet that orbits 890 million miles from its star, similar to Saturn’s orbit in our solar system.”

The data from the HR 8799 image suggests these gas giants have a lot of carbon dioxide gas, and thus might be growing by pulling in material from the star’s accretion disk.

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Norway awards the German rocket startup Isar Aerospace a two-satellite contract

9:48 am

Proposed spaceports surrounding Norwegian Sea
Proposed spaceports surrounding Norwegian Sea

In what appears to be a concerted effort by Norway to cement the establishment of its Andoya spaceport on its northwest coast, last week it awarded a two-satellite launch contract to the German rocket startup Isar Aerospace, launching from that spaceport.

The launch is scheduled until 2028 and will take place from Andøya Spaceport, Europe’s first operational spaceport on the mainland. The agreement between the Norwegian Space Agency and Isar Aerospace involves launching two Norwegian satellites as part of the AOS program, a national maritime surveillance system.

Isar is now gearing up for the very first orbital test launch of its Spectrum rocket, which will also be the very first from Andoya, and the very first from the four proposed spaceports in Europe. Regulatory filings from Norway suggest it will occur during a ten-day launch window beginning on March 20, 2025, but Isar has not yet confirmed this.

Unlike the two UK spaceports, which have been delayed years due to government red tape, Norway’s government has apparently worked hard to cut red tape and help Isar get off the ground quickly. It also appears that Norway’s government is acting to stymie Sweden’s Esrange spaceport, releasing a report last week that suggested it will not give permission for launches over its territory from Esrange.

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Varda’s third capsule begins orbital operations

9:37 am

Varda's space capsule, on the ground in Utah
Varda’s first capsule on the ground in Utah.

The in-space commercial company Varda on March 15, 2025 confirmed that its third capsule has successfully begun orbital operations after its launch on a Falcon 9 rocket, carrying an Air Force payload that will test measuring the capsule’s re-entry speeds in connection with military hypersonic research.

W-3’s payload is an advanced navigation system called an Inertial Measurement Unit (IMU) developed by the US Air Force and Innovative Scientific Solutions Incorporated (ISSI). This payload will be tested at reentry speeds it was designed to withstand but has never encountered before.

This payload is part of a $48 million Air Force contract awarded to Varda in December. The company also notes in the press release that it is aiming for a monthly launch rate for its capsules, which provide customers an opportunity to do all kinds of in-space testing and manufacturing. Since this launch took place only fifteen days after the landing of its second capsule, it appears Varda is moving swiftly in that direction, thus providing more business for American rocket startups.

The capsule includes a service module built by Rocket Lab, and will stay in orbit several weeks before it returns to Earth, landing at the Koonibba Test Range in South Australia, operated by the Australian commercial spaceport startup Southern Launch.

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Chinese pseudo-company launches 8 satellites

9:09 am

The Chinese pseudo-company Galactic Energy today successfully placed eight remote-sensing satellites into orbit, its solid-fueled Ceres-1 rocket lifting off from the Jiuquan spaceport in northwest China.

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

This was Ceres-1’s eighteenth launch, making Galactic Energy the most successful rocket pseudo-company so far in China. That its rocket uses solid-fueled shows us however that it is strongly tied to China’s military, and likely controlled tightly by it.

The leaders in the 2025 launch race:

31 SpaceX
13 China
4 Russia
3 Rocket Lab

SpaceX still leads the rest of the world in successfully launches, 31 to 23.

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Russia launches classified satellites

9:09 am

Early this morning Russia successfully placed three classified satellites into orbit, its new Angara-1.2 rocket lifting off from its Plesetsk spaceport in northeast Russia.

Little information about the launch was released, and none about the satellites. This was the rocket’s fourth straight launch success from Plesetsk, beginning in 2022.

The leaders in the 2025 launch race:

31 SpaceX
12 China
4 Russia
3 Rocket Lab

SpaceX still leads the rest of the world in successfully launches, 31 to 23.

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Norway questions Sweden’s plan to launch orbital rockets from Esrange spaceport

12:56 pm

Proposed spaceports surrounding Norwegian Sea
Proposed spaceports surrounding Norwegian Sea

In the capitalist competition between Norway, Sweden, and the United Kingdom to establish Europe’s prime launch site, Norway’s government has now issued a long study questioning Sweden’s plan to launch orbital rockets from its Esrange spaceport, since polar launches heading north from there will have to cross Norway.

You can read the report here [pdf]. For Esrange to conduct orbital launches it will need the permission of Norway for each launch, and it appears Norway is not satisfied with Sweden’s assessments that say launches can occur safely. The report concludes:

Norway recommends that the relevant Norwegian authorities conduct an assessment of the risks a launch will pose to the people in Norway and Norwegian interests, and determine whether this risk is acceptable, taking into account the interests and safety of the Norwegian people and the severity of the risk.

…Due to the significant economic costs associated with the impact on oil and gas production in
the Barents Sea, CAA Norway recommends that no launches be permitted in areas where there
is any risk to Norwegian oil and gas installations.

The release of this report illustrates Norway’s geographic advantages. The German rocket startup Isar is gearing up to do its first launch from Norway’s new spaceport, Andoya, possibly before the end of this month. It will have a clear path to space. Meanwhile, the American rocket startup Firefly, which wants to launch from Esrange, faces serious regulatory hurdles from neighboring countries, like Norway, because any rocket must fly over their territories.

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Four more launches, two by SpaceX, following manned launch

10:33 am

Following SpaceX’s successfully launch of four astronauts to ISS yesterday afternoon, the launch industry upped the pace by completing four more launches in the next few hours, two by SpaceX, one by Rocket Lab, and one by China.

Beginning with SpaceX, it first launched another one of its Transporter missions, carrying about three dozen smallsat payloads, its Falcon 9 rocket lifting off from Vandenberg. The first stage completed its thirteenth flight, landing on a drone ship in the Pacific. The two fairings completed their eighth and eleventh flights respectively.

Five hours later the company launched another 23 Starlink satellites, the Falcon 9 lifting off from Cape Canaveral in Florida, with the first stage completing its eighteenth flight, landing on a drone ship in the Atlantic.

Rocket Lab meanwhile successfully placed the first of eight commercial radar satellites into orbit for the Japanese satellite company iQPS, its Electron rocket launching from one of its two launchpads in New Zealand.

China in turn used its Long March 2D rocket to place two satellites into orbit, lifting off from its Jiuquan spaceport in northwest China. Its state-run press provided little information about either satellite. Nor did it provide any information about where the rocket’s lower stages — using very toxic hypergolic fuel — crashed inside China.

The leaders in the 2025 launch race:

31 SpaceX
12 China
3 Russia
3 Rocket Lab

SpaceX still leads the rest of the world in successfully launches, 31 to 22.

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SpaceX launches new crew to ISS

10:16 pm

Falcon 9 first stage barreling home to Florida
Falcon 9 first stage barreling home to Florida tonight.

After a scrub two days ago due to a ground equipment issue, SpaceX tonight successfully launched a new crew of four to ISS, its Falcon 9 rocket lifting off from Kennedy in Florida.

The Dragon capsule is Endurance, on its fourth flight. The first stage completed its third flight, landing back in Florida.

This launch will allow the two-person crews launched by Boeing’s Starliner capsule in June and SpaceX’s Freedom capsule in September to come back home on Freedom.

When it was decided not to allow the Starliner astronauts to come home on Starliner because of thruster issues on the capsule, NASA decided to keep its ISS launch schedule as normal as possible, thus forcing that crew to complete a mission of about eight months, with a planned return in February 2025. Initially their Starliner mission was expected to last anywhere from two weeks to two months-plus, depending on how well Starliner functioned while docked to ISS.
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Scientists issue new map of land below Antarctica’s icecap

1:18 pm

Map of Antarctica's estimated land mass
Click for original image.

Using decades of data and more advanced computer software, scientists have now compiled the most detailed map of the land and shorelines hidden below Antarctica’s massive icecap.

The map to the right, reduced to post here, shows that bedrock terrain generally in hues of green to brown, with lower elevations comparable to the ocean in hues of blue. The actual shoreline is however impossible to determine, since without the pressure of the icecap on top, the continent would rise, while the ocean itself would also rise with the addition of all that water.

You can read the science paper here.. From the press release:

Known as Bedmap3, it incorporates more than six decades of survey data acquired by planes, satellites, ships and even dog-drawn sleds. … The map gives us a clear view of the white continent as if its 27 million cubic km of ice have been removed, revealing the hidden locations of the tallest mountains and the deepest canyons.

One notable revision to the map is the place understood to have the thickest overlying ice. Earlier surveys put this in the Astrolabe Basin, in Adélie Land. However, data reinterpretation reveals it is in an unnamed canyon at 76.052°S, 118.378°E in Wilkes Land. The ice here is 4,757 m thick, or more than 15 times the height of the Shard, the UK’s tallest skyscraper.

The paper describes at length the large uncertainties that exist in this data. As thorough as they tried to be, we must remember that Antarctica is very large with a very hostile environment. Much of it has never been visited by any humans. Getting an accurate picture of the thickness of the ice at all points is presently impossible. This is basically an excellent summary of our best guess.

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Europe’s Hera asteroid probe sends back data from Mars fly-by

1:00 pm

Deimos and Mars as seen by Hera
Click to see full movie.

The European Space Agency (ESA) Hera probe, on its way to study the Didymos/Dimorphos asteroid binary, has successfully sent back images and data obtained during its close-by of Mars yesterday.

The infrared image to the right, a screen capture from a short movie assembled from Hera’s first images, shows the Martian moon Deimos with Mars in the background. The mission scientists have compiled all of these first images taken by Hera to create a short movie, that I have embedded below. From the movie’s caption:

The car-sized Hera spacecraft was about 1000 km away from Deimos as these images were acquired. Deimos orbits approximately 23 500 km from the surface of Mars and is tidally locked, so that this side of the moon is rarely seen. Hera’s TIRI – supplied to the mission by the Japan Aerospace Exploration Agency, JAXA – sees in mid-infrared spectral bands to chart surface temperature. Because Deimos lacks an atmosphere, the side of the moon being illuminated by the Sun is considerably warmer than the planet beneath it.

Although it appears as if Deimos is passing in front of Mars from south to north, the image was actually taken as Hera passed very close to Deimos from north to south at high speed.

Deimos appears brighter than Mars. This means that the surface of airless Deimos is hotter than the surface of Mars. The material covering the surface of Deimos has low reflectivity and is pitch black. This allows it to absorb sunlight well and become hotter. In contrast, the surface of Mars is highly reflective, and its atmosphere transports heat from the warm daytime side to the cooler nighttime side. This is why there is a large temperature difference between Mars and Deimos.

These infrared images also tell us the excellent quality of the camera. Note how detailed the features are on the Martian surface. When Hera gets to Didymos/Dimorphos in December 2026 it is going to be able to document those two asteroids in remarkable detail, including the results of the Dart impact on Dimorphos in September 2022.
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Ghana hires Axiom to help it develop its space industry

12:02 pm

Ghana and the American space station startup Axiom yesterday signed a deal whereby Axiom would provide Ghana’s Space Science and Technology Institute (GSSTI) advice and help in developing its own space projects.

The deal does not involve flying any astronauts into space, likely because Ghana simply can’t afford it. However, Axiom’s long experience working with NASA and flying astronauts to ISS gives it enough value that it can still make money providing advice and aid to poorer countries.

Whether Ghana will really benefit remains unclear. The government recently approved a national space policy, but that policy was mostly designed to establish a government bureaucracy, not encourage private enterprise. If this Axiom deal will provide educational aid than it might produce something. If instead the deal has Axiom working only with that bureaucracy don’t expect much.

Axiom however will welcome this extra cash. It illustrates another profit center for all American space companies.

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Pick a perfect March Madness bracket and SpaceX will award you a trip to Mars

10:55 am

College basketball fans now have a second motivation for predicting perfectly the team results during the March NCAA championship finals: SpaceX will award a perfect bracket a trip to Mars.

In a post from X’s business account, the platform officially announced their bracket challenge, partnered with their sponsor Uber Eats, announcing that anyone with a perfect bracket would win a trip to Mars as a part of the SpaceX program.

Those who are at least 18 years old and submit their bracket on X between March 16, after the CBS Selection Show, and the first game of the Round of 64 on March 20 will be eligible for the prize.

For those who don’t wish to travel to Mars, anyone who fills out a perfect bracket in the challenge could alternatively accept a prize of $250,000 and additional perks involved with the SpaceX program. This includes 1 year of free residential Starlink service, the chance to train like a SpaceX astronaut for a day, an opportunity to send a personal item of choice to space on a Falcon 9 launch, VIP viewing of a Starship launch.

If no one picks a perfect bracket (which is normally the case) a $100,000 prize was be awarded to the best non-perfect bracket.

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Launch window for first launch of German rocket startup Isar rocket revealed

10:39 am

Proposed spaceports surrounding Norwegian Sea
Proposed spaceports surrounding Norwegian Sea

According to filings from the Norway’s Andoya spaceport, the launch window for Germany’s rocket startup Isar Aerospace for the first test orbital launch of its Spectrum rocket is now from March 20, 2025 to March 30, 2025.

On 12 March, Andøya Space, the mostly government-owned commercial entity that operates Andøya Spaceport, published a launch period notice covering 20 to 30 March. In relation to a maritime danger-area warning, the notice specifies launch windows between 12:30 and 16:30 CET throughout the 11-day period.

While the notice does not explicitly mention Isar Aerospace, as the company is currently the launch site’s sole customer, it can only refer to Isar. The company itself has yet to make a formal announcement regarding the published launch window.

In general Isar has been very closed-mouthed about its launch plans, so this supposition is not uncertain. The article however is right that there is no other rocket entity at Andoya that the launch window could refer to.

If Isar succeeds at this launch, it will win the race among about a half dozen European rocket startups to get an orbital launch off the ground first. Rocket Factory Augsburg had hoped to launch last year, but a fire during the one of the last rocket engine tests destroyed the rocket.

Regardless of whether Isar’s launch is successful, Norway meanwhile will win the race to be the first European spaceport to achieve an orbital launch. Though it shifted to orbital commercial operations much later than the two UK spaceports, years of regulatory red tape has prevented those UK spaceports from launching.

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Blue Ghost watches the Earth eclipse the Sun from the Moon

10:23 am

Eclipse as seen by Blue Ghost
Click for original image.

Firefly’s Blue Ghost lunar lander last night successfully recorded images and data as the Earth slowly over hours crossed the face of the Sun, producing an eclipse.

The image to the right, cropped and reduced slightly to post here, is one such image. From the Firefly update page:

Captured at our landing site in the Moon’s Mare Crisium around 3:30 am CDT, the photo shows the sun about to emerge from totality behind Earth. This marks the first time in history a commercial company was actively operating on the Moon and able to observe a total solar eclipse where the Earth blocks the sun and casts a shadow on the lunar surface. This phenomenon occurred simultaneously as the lunar eclipse we witnessed on Earth.

The company has the right to tout its success, since it is the first of five private companies to actually succeed at a landing on the Moon. However, this is not the first such eclipse captured by a lander on the Moon. Surveyor 3 did it in April 1967, while Japan’s Kaguya orbiter did it also in 2009. (Watch this great lecture outlining the entire Surveyor program, presented during the 50th anniversary of its success. Hat tip reader Richard M.)

It is now past noon on the Moon, the temperatures will begin dropping, and Firefly will begin reactivating some instruments for the final week of operations before lunar sunset and shutdown for the long very cold lunar night.

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Indian engineers successfully undock its two Spadex robot satellites

9:33 am

After a delay of several months following the first autonomous robotic docking of its two-satellite Spadex mission, engineers from India’s space agency ISRO have now successfully undocked the chase satellite from its target satellite.

According to ISRO, the in-orbit performance of the docked satellites was extensively analysed, with a viable operational window identified from March 10 to March 25. Isro plans to conduct further experiments with the satellites in the coming days.

…Now that the undocking is complete, more docking attempts are expected to evaluate: How precisely ISRO can execute multiple docking maneuvers, how well the algorithms perform under various conditions, how the integrated inertial systems function and how the propulsion system performs during repeated operations.

These rendezvous and docking capabilities are essential for India to achieve its goal of building a manned space station and resupplying it on a regular basis.

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