Tag: engineering

Corroding glacial debris inside Martian crater

11:30 am

Corroding glacial debris inside Martian crater
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on June 5, 2026 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The science team labels this “irregular cellular structures on crater floor.” Located at 46 degrees south latitude in the Martian southern cratered highlands, we are likely looking at glacial debris that has been significantly corroded, the near surface ice sublimating away in patches because the dirt and dust that protects it has for some reason done a poor job.

In this case however the sublimation has produced these very strange features, very different than corroding subsurface ice features seen elsewhere on Mars. Reminds me of peeling paint, but even that analogy falls short.
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ESA finalizes contract for privately built cubesat lander as part of its Ramses mission to Apophis

9:36 am

Apophis' path past the Earth in 2029
A cartoon (not to scale) showing Apophis’s
path in 2029.

The European Space Agency (ESA) yesterday announced it has issued the full contract with private startup EMXYS to build its Don Quijote cubesat lander for ESA’s Ramses mission to go to the potentially dangerous asteroid Apophis when it flies by the Earth in April 2029.

EMXYS, a Spanish company, previously built a gravity-measuring instrument for the cubesat Juventas, which is flying on ESA’S Hera mission presently on its way to the binary asteroid Didymos/Dimorphos.

Francesca Ingiosi, overseeing Ramses’ CubeSats, notes: “There won’t be time for sustained human oversight: Don Quijote is going to take itself down on a completely autonomous basis, relying on feature tracking to find a safe place to land. It will be running its gravimeter and magnetometer when it flies, but we have high expectations for its scientific work on the surface.

“It will come down quite slowly, but in the ultra-low gravity of Apophis some bouncing along the surface is possible. The CubeSat is therefore designed to operate from any orientation, although the precise nature of the surface remains a question mark: there is even a small possibility that Don Quijote sinks into the ground, which would not be good!

The launch window for Ramses is in the spring 2028, so the schedule to get this cubesat built is very tight.

Below is a list of the missions going to Apophis in 2029:
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German rocket startup Isar wins another launch contract

9:03 am

Isar's first launch attempt fails
Spectrum falling seconds after its launch
in March 2025

Even though it has now spent six months repeatedly scrubbing the second launch attempt of its Spectrum rocket (the first was a failure), the German rocket startup Isar yesterday announced it has won another launch contract, this time from the German subsidiary of satellite imaging company Planet.

Under the agreement, Isar Aerospace will launch one of Planet’s next-generation high-resolution Pelican satellites, with additional satellites planned for future launches. The Pelican is scheduled to fly on Isar Aerospace’s Spectrum launch vehicle, currently scheduled as early as late 2026 from Isar Aerospace’s dedicated launch complex at Andøya Space. The Pelican will be assembled in Planet’s upcoming Berlin manufacturing facility. With both satellite and rocket being built in Germany, this launch will be a national first for the country, demonstrating rapid advancements in the nation’s sovereign space capabilities.

Isar already has contracts with the satellite repair companies Astroscale and D-Orbit, the satellite aggregators Exolaunch and SEOPS, the European Space Agency, and Norway.

As for the rocket itself, the launch is now tentatively scheduled for sometime in July. The company first attempted a launch in January, then in March, then in June. All were scrubbed due to technical issues.

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Katalyst’s Link rescue spacecraft launched successfully

8:41 am

Katalyst's proposed Swift rescue mission
Katalyst’s proposed Swift rescue mission.
Click for original image.

Northrop Grumman’s Pegasus rocket this morning successfully launched the Link rescue spacecraft built by the startup Katalyst, aimed at rendezvousing and grabbing the Gehrels-Swift telescope and raising its orbit.

A mission to raise the altitude of NASA’s Neil Gehrels Swift Observatory is underway after launching at 8:36 p.m. Marshall Islands Time (4:36 a.m. EDT), Friday, July 3, from Kwajalein Atoll in the South Pacific Ocean.

LINK, a robotic servicing spacecraft built by Katalyst Space, launched into orbit on a Northrop Grumman Pegasus XL rocket, which was deployed by the company’s Stargazer, a modified L-1011 aircraft, at an altitude of about 40,000 feet.

The actual rescue won’t occur for several weeks, as the Katalyst team will spend several weeks checking out the spacecraft’s systems to make sure all is working as intended. Once this is assured, they will begin to slowly move towards Swift:

As it approaches, LINK will collect and send images of Swift to the ground, where teams at Katalyst and NASA will assess the planned grab points. This rendezvous and capture will be a slow and careful process that could take about a month.

Once its robotic arms are attached to Swift, LINK can begin to slowly push Swift upward. Over the course of a few months, LINK will attempt to return Swift close to its original launch altitude. Then, LINK will detach, leaving Swift in its new orbit.

The Gehrels-Swift team will then return the telescope to its operational status, following the same commissioning procedures used when the telescope was first placed in orbit in 2004.

As for the launch, this was Northrop Grumman’s second launch in 2026, and the last Pegasus launch ever. The air-launched rocket is now retired. It was created in the 1980s by the rocket startup Orbital Sciences with the intent to provide a low cost launch option. It launched a total of 46 times (with three failures in the early years), but in the past two decades it could not compete with SpaceX’s Falcon 9.

The leaders in the 2026 launch race:

79 SpaceX
42 China
10 Rocket Lab (plus two suborbital HASTE launches)
8 Russia

For the third straight year SpaceX leads the entire world combined in total launches, 79 to 74.

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Sunspot update: The ramp down to solar minimum continued to stall in June

8:25 am

As I have tried to do every month since I started Behind the Black sixteen years ago, it is time for another sunspot update tracking the Sun’s sunspot activity as it evolves across its eleven year cycle. As always, I use as my basis the monthly update by NOAA of its graph showing the sunspot activity on the Earth-facing hemisphere but annotated by me with extra information to illustrate the larger scientific context.

As you can see by that graph below, June activity (the green dot) was only slightly less that in May, indicating a continuing stall in the ramp down to solar minimum, a ramp down that NOAA’s panel of solar scientists had predicted had begun in April 2025.

» Read more

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Skyroot announces launch window for 1st launch of Vikram-1 rocket

8:01 am

Vikram-1 stacked on the launchpad
Vikram-1 stacked on the launchpad

India’s rocket startup Skyroot yesterday announced that its first Vikram-1 rocket is stacked on the launchpad and the company now has a launch window from July 12 through August 4, 2026.

It will attempt to reach a 450 kilometer orbit at a 60 degree inclination. The launch is mostly to test the rocket’s systems, including its guidance and navigation as well as its ability to complete a stage separation and ignition of its second stage. The company says it will also carry several small commercial payloads from both Indian and international customers, but it did not name them.

Few new rockets succeed on their first launch attempt, but it does happen. For India this launch and company are the equivalent of SpaceX in the U.S. in 2006. At that time NASA ran everything. The big space rocket companies (Boeing and Lockheed Martin) had no interest in innovation or competition, and in fact had formed a partnership holding a monopoly on all military launches, while acting almost like the rocket division for those government agencies.

In India now, its space agency ISRO runs everything, including building and flying the nation’s rockets. The Modi government has been trying to get the agency to transfer ownership and management of those rockets to private companies, but the results have been inconclusive. ISRO has transferred some operations and management to private companies for two of its rockets, but done so in a way that ownership and control still remains with the agency.

A success by Skyroot would for the first time create a real alternative to the government agency. But like SpaceX in 2006, the full transition to a private space industry will likely take an additional decade or more. But a success now would be a start.

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Long term monitoring of the dry-ice cap at the Martian south pole

12:23 pm

Long term monitoring of the dry-ice cap at the Martian south pole
For original images go here and here.

Cool image time! The two pictures to the right, cropped and reduced to post here, were taken more than two decades apart by the high resolution camera on Mars Reconnaissance Orbiter (MRO). The show a specific spot on the Martian south pole ice cap, at a location where there is also a perennial cap of dry ice that is also slowly shrinking in size.

The top picture was taken on May 14, 2007, the first close-up of this location. At the time the science team titled it “Fast Evolution of Landforms on the Southern Residual Caps,” which suggests that even then they had a sense from one earlier MRO picture that these strange forms were changing. As a result, scientist have used MRO to monitor this site repeatedly over the years, taking dozens of images of this location on a regular basis to track changes, both seasonally and over years.

The bottom picture is the most recent, taken on May 3, 2026. If you compare the two pictures closely, you can see that all these depressions have grown in some manner over the past two decades. (The blobs you see are all depressions. Optically your mind might make them appear as humps, but they are actually places where the cap’s top layer of dry ice has sublimated away.)
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Military contractor Anduril experiences engine explosion during static fire test

9:49 am

The military contractor Anduril, which builds a variety of space-based technologies mostly for the Pentagon, had a solid rocket motor explode during static fire test last week at its facility in Mississippi.

According to a statement by the company’s CEO, no one was hurt, and the company was assessing the damage and pinpointing the cause of the explosion.

A solid rocket motor exploded during a test fire at our factory in Mississippi. Most importantly, no one was hurt. The safety systems worked exactly as designed. The team responded exactly the way they’ve trained to, and damages to our test stand were minimal. By the end of the day everyone was already focused on understanding what went wrong and getting ready for the next test.

In 2023 Anduril had acquired the solid-fueled rocket motor company Adranos, and has since been developing these motors for missile use. The company has also partnered with Rocket Lab as part of that company’s 20-launch Pentagon deal for testing hypersonic technology with its HASTE suborbital version of its Election rocket.

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FAA eases supersonic flight restrictions over U.S., as per Trump order from 2025

9:36 am

In accordance with an executive order issued by President Trump in 2025, the Federal Aviation Administration (FAA) on June 30, 2026 announced new regulations on supersonic flights over the United States, easing the half-century-old restrictions that prevented such flights.

You can read the proposed regulations here [pdf]. It states the following:

As directed by [Trump’s Executive Order] 14304, FAA proposes to repeal the prohibition on civil supersonic flight in the U.S. contained in 14 CFR § 91.817 by revising the current regulatory text in § 91.817 to provide an interim noise-based operating certification standard. Further, the proposed revision would provide the conditions under which operators may engage in civil supersonic flight without the need for a special flight authorization (SFA) to exceed Mach 1, an operation-specific authorization that does not allow for civil supersonic flight outside of research and testing purposes in isolated test areas.

To enable supersonic flight operations in the U.S., this proposal would require (1) the aircraft be operated such that sonic boom overpressure at the surface does not exceed 0.11 pound per square foot (psf), (2) the Administrator finds that the operator has shown, through measurement, modeling, or other methods, that primary and secondary (direct and indirect) sonic boom overpressure at the surface does not exceed 0.11 psf during operations, and (3) the aircraft be operated in compliance with any conditions and limitations issued by the Administrator.

It is very likely this regulation was informed by the supersonic flight tests conducted by Boom Supersonic in 2025, where its plane broke the sound barrier three times during a flight with no significant sonic booms.

The FAA hopes to get this new regulation finalized by mid-2027.

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Three launches from SpaceX, ULA, and China

9:15 am

Since yesterday there have been three confirmed launches by SpaceX, ULA, and China, with a fourth by China not yet confirmed.

First, SpaceX launched 24 Starlink satellites, its Falcon 9 rocket lifting off from Vandenberg Space Force Base in California. The first stage (B1100) completed its 7th flight (37 days after its previous flight), landing on a drone ship in the Pacific.

Next, ULA placed 29 more Amazon Leo satellites into orbit, its Atlas-5 rocket lifting off from Cape Canaveral Space Force Station in Florida. This was ULA’S last Atlas-5 launch for Amazon, and its fifth launch in 2026. The rocket is being retired, and the remaining six Atlas-5s in stock are all presently reserved by Boeing for launching its Starliner capsule. Since that capsule has no present missions, it is very possible Boeing will sell these launches to Amazon, though this has not yet happened.

As for Amazon, these 29 satellites brings the total in orbit at this time to 396. According to its FCC license, it must place 3032 in orbit by July 30, 2029. Getting those satellite in orbit on time remains a challenge, as two of the rockets the company is relying on (ULA’s Vulcan and Blue Origin’s New Glenn) are grounded, and Arianespace’s Ariane-6 has a somewhat slow launch cadence. It also has a ten-launch contract with SpaceX’s Falcon 9, but that won’t be sufficient to meet its needs.

Finally, China today launched a new ocean observation satellites, its Long March 4B rocket lifting off from its Jiuquan spaceport in northwest China. China’s state-run press provided no information about where the rocket’s lower stages, which use very toxic hypergolic fuels, crashed.

China had another launch scheduled today, but as of posting no word of that launch has been released.

The leaders in the 2026 launch race:

79 SpaceX
42 China
10 Rocket Lab (plus two suborbital HASTE launches)
8 Russia

For the third straight year SpaceX leads the entire world combined in total launches, 79 to 73.

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Launch of Katalyst’s Swift rescue mission scrubbed

8:46 am

The launch early this morning of Katalyst’s Link rescue mission to raise the orbit of the Gehrels-Swift space telescope was scrubbed due to a “launch vehicle issue” with the Northrop Grumman Pegasus rocket.

After takeoff of the L-1011 aircraft carrying the Pegasus XL, a launch vehicle issue temporarily prevented teams from deploying the rocket. The date of the next launch attempt for this mission to boost NASA’s Neil Gehrels Swift Observatory will be determined after teams have reviewed data from today’s attempt.

NASA provided no further information. This is the last Pegasus rocket existing, as the company ceased its production several years ago, with its last launch in 2021. Overall it had only been launched five times in the past sixteen years, a cadence so slow it means launch crews now are likely inexperienced or very rusty.

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Chandra data finds the Milky Way is bigger in size than previously believed

1:11 pm

The Milky Way is bigger than we thought
Click for original movie.

Using X-ray data from both the X-ray space telescopes Chandra and XMM-Newton, scientist now think the Milky Way is bigger in size than previously believed, with its three outer arms winding around the galactic center at a greater distance.

The two artist conceptions to the right show the difference before and after. The top image shows the previously conceived positions of the three outer arms on the right. The bottom image shows the new position as estimated by this data, about 10% farther out from the Milky Way’s center with the arms more widely spaced.

The researchers used three different gamma-ray bursts to determine the distances to three spiral arms in the Milky Way. In order of increasing distances from the Galactic Center, they are the Perseus, the Outer, and the Outer Scutum-Centaurus arms. Along the direction of one of the bursts, they found that both the Outer and Outer Scutum-Centaurus arms are about 10% more distant than astronomers previously thought.

“The differences are small, but any revision of these distances is important because they are so fundamental for understanding our galaxy,” said co-author Ilaria Fornasiero, who was a PhD student in the same program as the leading author. “For example, this could mean that astronomers have to revise estimates of the mass of the galaxy, because that affects how wide the arms stretch.”

There is a lot of uncertainty in this result. Because we are inside the Milky Way, we really cannot see what it looks like. In fact, though they know it is a spiral galaxy, astronomers are not even sure what classification it falls into. Many studies say it is a barred spiral, but the size and magnitude of that bar is unconfirmed. In this study it appears they considered the bar less prominent.

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The rocky surface of Gediz Vallis on Mars came from landslides and water-induced debris flows from above

12:46 pm

Looking south inside Gediz Vallis
Looking uphill into Gediz Vallis, in 2024, when this research was being done.

Overview map
This map from 2024 provides the context for the panorama above.
Click for interactive map.

Using the data the rover Curiosity gathered during its exploration of the canyon dubbed Gediz Vallis on the lower flanks of Mount Sharp (Aeolis Mons) inside Gale Crater on Mars, scientists have concluded that the rocky material came from above, flowing downhill in the far past in major boulder landslides and water-induced debris flows.

The panorama above was taken when Curiosity was in Gediz Vallis. The overview map to the right provides the context, with the white dotted line showing Curiosity’s actual travels, and the yellow lines indicating the approximate area covered by the panorama. From the paper’s abstract:

Curiosity investigated Gediz Vallis, a canyon within Aeolis Mons, indicating that it must have formed late in Gale’s history. At the center of Gediz Vallis is a topographic ridge, comprised of sedimentary rocks. In the region where Curiosity crossed the ridge, Arc Pass, the rover investigated the processes that formed the ridge.

Curiosity found that rocks in Arc Pass were formed by water flows rich in debris, and landslides, which originated from higher up Aeolis Mons. These transport processes were separated by episodes of wind erosion and alteration of the rocks by groundwater. These observations indicate that liquid water continued to be available for brief periods late in the history of both Gale crater and Mars. [emphasis mine]

As noted by the highlighted sentence, the geology once again says that water in some form shaped the surface. As the scientists add in the paper, however, “Any surface water was likely only intermittently available, interspersed with significant hiatuses of aeolian erosion and dry granular transport processes.” It remains to be seen exactly what state that water was in, whether liquid or ice, considering that Mars has always been too cold with too thin an atmosphere for liquid water to exist on the surface.

Curiosity spent more than a year in this part of Gediz Vallis, then traversed west into the parallel canyon, dubbed Valle Grande, that it has been climbing for the past two years.

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The first satellites in Russia’s Rassvet constellation are doing unexpected maneuvers

11:21 am

The first sixteen satellites in Russia’s Rassvet constellation — its intended answer to SpaceX’s Starlink — are doing unexpected maneuvers that do not match the orbits assigned according to its International Telecommunications Union (ITU) filings.

According to filings with the International Telecommunications Union (ITU) Buro-1440 planned to deploy its constellation in a 800-kilometer orbit with an inclination 82.3 degrees toward the Equator in evenly spread 12 orbital planes with 21 satellites in each plane. Another option called for a 600-kilometer orbit with an inclination 60 degrees, which would require 45 satellites in each of 30 orbital planes. In the meantime, the first Rassvet launch targeted the 82-degree orbit, but as of June 2026, none of the satellites had climbed above 550 kilometers.

The orbit of one satellite has already decayed. The other satellites are all so far operating at orbits ranging from 270 to 550 kilometers, well below their assigned orbits. Moreover, some have actually started to maneuver downward after climbing upward for several months.

The constellation is being built by Bureau (Buro) 1440, a so-called private company in Russia. The first launch occurred from Russia’s Plesetsk spaceport in March, 2026, and was unannounced apparently to avoid an attack by Ukrainian drones. The Ukraine considers this constellation a Russian war asset, as it will be used in a similar manner to Starlink. The second launch was expected several weeks ago, but then never happened.

Overall, the constellation of 700+ satellites is supposed to be fully deployed by 2035. Based on past Russian behavior, expect it to be delayed significantly beyond that. The Ukraine need not consider it a big threat.

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European rocket startup Latitude signs deal to launch from Oman’s Etlaq spaceport

9:38 am

Active and proposed Middle East spaceports
Active and proposed Middle East spaceports

The European rocket startup Latitude and the nation of Oman have now signed a letter of intent whereby Latitude will in late 2027 do the first experimental launch of a rocket from Oman’s Etlaq spaceport near the village of Duqm.

Under the agreement, Etlaq, Oman’s commercial spaceport operator, and Latitude, a French commercial launch service provider, will establish a framework for the first experimental launch of Latitude’s launch vehicle from Etlaq Spaceport. The launch is currently targeted for late 2027.

The two companies will also work together on developing the necessary ground infrastructure, operational planning and regulatory preparations required to support future launch operations.

The announcement was vague as to the nature of the rocket, making no mention of Latitude’s Zephyr rocket, suggesting that this first test launch would be not be orbital, but be a suborbital flight. At the same time, Latitude in January 2026 had said it would launch Zephyr for the first time in 2027, and that the launch would not be from French Guiana. Yesterday’s deal with Oman fits that early announcement.

Latitude is the third European rocket startup to sign a deal with Oman’s Duqm spaceport. PLD signed an agreement in 2025, and HyImpulse did the same one month ago.

Those earlier deals were only agreements to consider the idea. This new deal with Latitude seems more firm as to an actual launch. Note however that Oman announced an aggressive suborbital launch schedule of Middle Eastern rocket startups in 2025, none of which happened. We must therefore recognize that a strong element of blarney exists in all these announcements.

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Firefly now targeting a ’28 launch date from Sweden’s Esrange spaceport

9:20 am

Proposed or active spaceports in north Europe
Proposed or active spaceports in north Europe

Firefly yesterday announced a new agreement with SSC Space, the Swedish company that manages that country’s Esrange spaceport, outlining the final steps towards a 2028 launch from that location by Firefly’s Alpha rocket.

The companies are now taking the next step towards orbital launch from SSC Space’s Esrange Space Center and undergoing final construction of the pad at Launch Complex 3C with the first launch targeted for 2028.

Key infrastructure development to date includes completing the launch control center, payload processing facility, launch vehicle integration building, tracking and control systems, and security and storage facilities at Launch Complex 3C. Built to support Firefly’s Alpha rocket, the orbital launch complex will expand critical access to space from mainland Europe.

The announcement also noted the signing of agreements between Sweden and the U.S. government, streamlining the licensing process as well as simplifying the State Department’s strict ITAR regulations so that U.S. technology can be transported to Sweden.

This plan carries one major caveat. As you can see from the map to the right, except for a due south flight path, orbital launches from Esrange must cross over territories controlled by other nations. Norway’s government has already expressed opposition to such crossings. We have no word from Finland or Russia. And a due south path doesn’t work because the rocket’s lower stages would then crash within Sweden and the European mainland. Alpha’s first stages are not reusable, which means those crashes would be uncontrolled.

At this point it is not clear how Sweden and Firefly are going to resolve this issue.

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Blue Origin provides update on pad repair and New Glenn explosion investigation

8:51 am

New Glenn explosion
New Glenn exploding on May 28th.

The CEO of Blue Origin, David Limp, yesterday posted an update on the company’s effort to get its New Glenn rocket back flying after the May 28, 2026 launchpad explosion, promising once again that they will resume launches before the end of 2026.

Most of his update described the work the company is doing cleaning up and rebuilding the launchpad. For one thing, they are taking advantage of the explosion by going directly to an upgrade whereby they no longer stack New Glenn entirely horizontally. Instead, some stacking will be horizontal, and some vertical. This change is to simplify operations and make the pad compatible for the present New Glenn — with its configuration of seven first stage engines and two upper stage engines (7×2) — and the more powerful 9×4 version, with nine first stage engines and four upper stage engines.

As for the investigation into the explosion itself, Limp was much more vague:

We continue to actively investigate the cause of the anomaly. The vehicle is highly instrumented with extensive data from multiple camera angles and sensors, giving us confidence in our ability to identify and correct the root cause. Early analysis points to the aft section of the first stage.

There is no doubt they can get the launchpad ready before the end of the year. Finding the cause of the explosion and fixing it by December however remains less certain. Limp’s reticence could be simply the company’s desire to restrict access to proprietary information. Or it could be they haven’t yet pinned down the cause. If the latter, the December date becomes far more doubtful.

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New research on ISS shows weightlessness causes significant harm to mice babies and their descendents

12:59 pm

A recent 42-day experiment on ISS, where mice were allowed to reproduce in weightlessness and produce offspring, has found that the weightlessness environment not only causes significant harm to mice conceived and born under these conditions, it appears to carry that harm down to at least the next generation.

From the abstract, which labels the first generation offspring as F1 and the next generation F2:

In the NASA Rodent Research 20 mission, we examined the impact of a 42-d spaceflight on the female reproductive axis including ovulatory capacity, implantation rate, and fecundity as well as behavioral, metabolic, and functional outcomes in F1 and F2 offspring. Females bred 5 d after return to Earth became pregnant but only exhibited a slight decline in fecundity compared to ground controls.

In contrast, F1 offspring from spaceflight dams exhibited marked growth, functional, and behavioral differences compared to F1 offspring from control dams. Moreover, F1 female offspring from spaceflight dams exhibited decreased ovarian reserves as evidenced by reduced anti-Mullerian hormone levels early in life (21 d of age) and premature ovarian failure or an early loss in fertility, as indicated by reduced numbers of litters and total number of pups born to females over a 9-mo period.

Strikingly, transgenerational metabolic and reproductive disturbances were also observed in F2 pups of spaceflight granddams, including persistent reductions in ovarian reserve, suggesting germline-level effects.

In other words, mice babies conceived and born in space exhibited serious issues that were also carried over into the next generation.

Though a number of similar studies have been done previously on ISS, the research is generally limited and inconclusive. Experiments on Earth duplicating lower or zero gravity suggest it has no effect on reproduction. This study however tested actual weightlessness, and found it decidedly harmful for newborn mice and later generations.

The results strongly argue that no woman should allow herself to become pregnant while in space. This conclusion might change given time, but I have my doubts. This result is what most people assume about the consequences of conception in weightlessness.

It also argues strongly for the need of some form of artificial gravity on future long term interplanetary space vessels. Without it, space travel will be significantly limited.

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The present state of NASA’s Artemis program

12:00 pm

Artemis logo

The aggressive effort by NASA administrator Jared Isaacman to rationalize and speed up the agency’s Artemis program to get back to the Moon and build a base there has resulted in a plethora of new missions, almost all of which are being built by the private sector.

Today Isaacman and his Moon Base program manager, Carlos García-Galán, held a press conference where they announced four more missions.

  • Astrobotic won a $297.9 million contract to build and fly two more of its smaller Peregrine lunar landers. This lander attempted a landing in 2024, but a fuel leak right after launch made that impossible.
  • Firefly won a $144.2 million contract to build and fly another Blue Ghost lander, the only commercial lander to successfully achieve a lunar soft landing, in 2025.
  • Intuitive Machines won a $148.3 million contract to build and fly another Nova-C lander. This lander attempted two landings, and in both cases it tipped over just after launch. The Nova-D design, under development, has a lower center of gravity, but for reasons not well explained by García-Galán NASA chose to go with the Nova-C design.

All are considered part of the first phase of the Artemis program and thus are targeting a launch by 2028.

In addition, NASA is considering using back-up equipment developed to build the Curiosity and Perseverance Mars rovers to create quickly and relatively inexpensively a lunar rover that they have dubbed “Promise.”

In order to make some sense of this program and these many misssions, I have created below a chronological list of confirmed missions, with their present status indicated (including uncertainties), as well as some unconfirmed missions based on my own speculations. All dates are tentative at this point, even if NASA has provided us a specific target date.

Several things to note as you review this list. While there are handful of missions going elsewhere, Isaacman is attempting to focus the program toward landing at the planned lunar base near the south pole, and to do so as fast as possible in the most effective way. The cargo missions and rovers are to get there ahead of the manned missions, in order to provide the astronauts supplies and surface transportation once they arrive. Those same missions will also do some preliminary scouting, and likely carry power and excavation equpiment needed to build the base.

It is also important to note that this plan is still in its very early stages of development. Many of the rockets and spacecraft and landers needed for these missions are not yet operational. Many have not yet demonstrated the capability to do what is requested. Thus, the program will certainly not follow the plan as presently outlined by the agency. Moreover, there will be failures along the way.

The program however is designed to accelerate development, to accept those failures within the program’s larger scope. If one mission fails, others are on the table to fly quickly to overcome the loss. And since the program is relying on the entire aerospace industry, the agency will have great redundancy from many companies.

I welcome comments and suggested changes or corrections. I fully intend to publish this list repeatedly over the coming years as the Artemis program evolves. And as the private sector begins flying its own missions to the Moon, independent of NASA, I intend to include those as well.
» Read more

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Study: Seventeen days in space does little to change brain power

10:31 am

According to a new study testing the vital brain signs of two astronauts before and after the seventeen day Axiom tourist mission to ISS in 2022, weightlessness and the space environment resulted in no sign of cognitive decline or changes in brain function.

You can read the paper here. From the abstract:

This study is a methodological demonstration of comparing cognitive performance and electroencephalography (EEG) brain vital signs in 2 astronauts before, shortly after, and 5 months following a 17-d mission to the International Space Station. Cognitive task performance remained consistent between pre- and post-spaceflight measures. Similarly, EEG brain vital signs revealed minimal change in the time-frequency domain. These findings suggest that short-duration spaceflight, combined with sufficient Earth adaptation time, showed no major decrements in cognitive and neurophysiological function.

Though it has been evident now since the 1960s that two- to three-week missions cause no lasting impact on the body or brain, this study documents a baseline technique for measuring the changes that might occur on longer flights.

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