Tag: engineering

Rocket Lab delivers its third service module for Varda’s orbiting capsules

9:35 am

Rocket Lab yesterday announced it has completed and delivered its third Pioneer service module used in conjunction with the capsules of the in-space manufacturing company Varda, which flies these capsules in orbit for a variety of customers.

The spacecraft will support Varda’s next orbital processing and hypersonic reentry mission, W-3. Earlier this month, the Company’s second spacecraft for Varda, W-2, successfully launched and is currently operating on orbit. Carrying payloads from the Air Force Research Laboratory and NASA’S Ames Research Center, W-2 will also conduct research to expand the capability and capacity of Varda’s pharmaceutical processing hardware in orbit before it’s hypersonic re-entry and recovery in South Australia.

Like its predecessors, W-3 is based on Rocket Lab’s Pioneer spacecraft, leveraging vertically integrated spacecraft components and subsystems, including spacecraft propulsion, flight software, avionics, reaction wheels, star trackers, separation system, solar panels, radios, composite structures and tanks, and more. The spacecraft will provide power, communications, propulsion, and attitude control for Varda’s 120kg manufacturing capsule, which uses microgravity conditions to develop products that are difficult or impossible to create on Earth.

That hypersonic test for the military is presently scheduled for March 2025. Meanwhile Rocket Lab is building the fourth service module for Varda, as part of a four-spacecraft deal.

If Varda begins generating revenues from these first four capsules, it will then likely sign another deal with Rocket Lab.

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Chinese pseudo-company GalaxySpace successfully tests its cell-to-satellite system

9:25 am

The Chinese pseudo-company GalaxySpace yesterday successfully proved its its cell-to-satellite technology works, using a smartphone to connect with one of its recently launched satellites.

At 10:28 a.m., a satellite from the constellation passed over the conference venue in the Beijing Economic-Technological Development Area. On-site staff used their mobile phones to connect to the satellite via a terminal device installed on the rooftop. Through a gateway station in Beijing, they established a connection with personnel in Beijing and Thailand.

Calling Thailand was significant because it signaled the signing of a deal with a major Thailand telecommunications operator to provide this service to that country.

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French rocket startup signs Spanish rocket engine startup to provide attitude thrusters

9:15 am

The French rocket startup MaiaSpace, a subsidiary of Airbus, has awarded the Spanish rocket engine startup Arkadia Space a contract to provide the small attitude thrusters used to maintain the rocket’s course.

MaiaSpace hopes to do its first test orbital launch of its smallsat rocket in 2026, launching from a new commercial launchpad at French Guiana.

Arkadia’s thrusters are somewhat radical.

Arkadia Space, founded in 2020 in Castellón, Spain, develops hydrogen peroxide-based propellant systems for satellites and platforms with a mass of more than 50 kilograms. “The hydrogen peroxide-based propellant offers exceptional performance while significantly reducing cost and environmental impact compared to traditional hydrazine-based Reaction Control Systems,” according to the news release.

Hydrazine thrusters, while practical and lightweight, have the problem that the fuel is very toxic, and requires safety precautions to prevent injury to employees or the public. Using hydrogen peroxide instead likely reduces this issue significantly.

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European underwater neutrino telescope detects most powerful neutrino ever

8:53 am

A European underwater neutrino telescope that is still under construction recorded evidence in February 2023 of most powerful neutrino particle ever detected.

KM3NeT’s two neutrino detectors — one off the coast of Sicily, the other near southern France — are still under construction but already collecting data. Both contain cables hundreds of meters tall, which are strung with bundles of light sensors anchored to the seafloor.

When cosmic neutrinos interact with matter in or near a KM3NeT detector, they spawn charged particles such as muons. As those muons careen through water, they give off feeble flashes of bluish light that KM3NeT’s sensors can pick up. Clocking when different sensors spot this light can reveal a particle’s path; the brightness of the blue hue reflects the particle’s energy.

On February 13, 2023, the detector near Sicily was run through by an extremely energetic muon traveling nearly parallel to the horizon. At the time, only 21 of the planned 230 sensor cables were in place. Based on the muon’s energy and trajectory, KM3NeT scientists determined it must have been spawned by a neutrino from space rather than a particle from the atmosphere.

Simulations suggest the neutrino’s energy was around 220 petaelectron volts. The previous record holder boasted around 10 petaelectron volts.

Tracking that trajectory backwards, astronomers say the particle came from a region of space where there are a lot of active galaxies, any one of which could be the source of the neutrino. It is also possible the neutrino came instead from an interaction of high energy cosmic rays and the photons from the faint microwave background left over from the Big Bang.

As noted very correctly by one scientist, “At this point, it’s very difficult to make conclusions about the origins,” says Kohta Murase, a theoretical physicist at Penn State not involved in the research. “It’s dangerous to rely on one event.”

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NASA announces March 12, 2025 as new launch date for next crew to ISS

9:47 am

NASA yesterday announced that it is now targeting March 12, 2025 as new launch date for sending the next crew to ISS, thus moving that date up about one week.

The earlier launch opportunity is available following a decision by mission management to adjust the agency’s original plan to fly a new Dragon spacecraft for the Crew-10 mission that requires additional processing time. The flight now will use a previously flown Dragon, called Endurance, and joint teams are working to complete assessments of the spacecraft’s previously flown hardware to ensure it meets the agency’s Commercial Crew Program safety and certification requirements. Teams will work to complete Dragon’s refurbishment and ready the spacecraft for flight, which includes trunk stack, propellant load, and transportation to SpaceX’s hangar at 39A at NASA’s Kennedy Space Center in Florida to be mated with the mission’s Falcon 9 rocket. This will be the fourth mission to the station for this Dragon, which previously supported the agency’s Crew-3, Crew-5, and Crew-7 flights.

Both NASA and SpaceX are touting this as a great decision because it will allow the present ISS crew (which includes the two astronauts initially launched on Starliner last year) to get home quicker.

The truth is that this decision really hides the fact that both the agency and company made a wrong decision to use a new capsule for this mission. SpaceX needed more time than expected to prepare it, and those delays pushed back both the launch of a new crew and the return of the old. So, while everyone is spinning this as SpaceX and NASA brilliantly improvising to get those Starliner astronauts home sooner, the real story is that their return had been significantly delayed by almost two months by SpaceX’s inability to get the capsule ready as promised.

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Orbex scouts Saxaford in advance of first launch

9:25 am

Map of spaceports surrounding Norwegian Sea
Spaceports surrounding the Norwegian Sea

Though no details have been released, a team from the British rocket startup Orbex has arrived at the Saxaford spaceport in the Shetland Islands to begin preparations for the company’s first launch there, now planned to occur before the end of this year.

Originally Orbex was going to do its launches from the United Kingdom’s other proposed spaceport in Sutherland on the northern coast of Scotland. It had obtained a 50-year-lease to build its own dedicated launch facility, had built its rocket manufacturing facility nearby, and had originally hoped to do the first test orbital launch of its Prime rocket in 2022.

Three years later the UK’s Civil Aviation Authority (CAA) had still not issued Orbex or Sutherland the necessary launch licenses. Faced with bankruptcy if it didn’t launch soon, in December the company announced it was switching its first launch to Saxaford, where the CAA had completed spaceport licensing. It hoped the CAA would thus be able to give it a launch license quickly. We shall see.

Note that the news is slow today. As much as I want to post lots of stuff, I can’t if nothing of significance appears to be happening.

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China and SpaceX complete launches

12:02 pm

Both China and SpaceX successfully completed launches today.

First, China completed the first launch of its Long March 8A rocket, an upgraded and more powerful version of its Long March 8 rocket. The rocket lifted off from China’s coastal Wencheng spaceport, and put the second batch (number unrevealed) of one of China’s new mega internet constellations.

Along with the basic Long March-8 model and the booster-free tandem configuration, it forms the Long March 8 series of rockets, providing a payload capacity range of 3 tons, 5 tons, and 7 tons to SSO. This significantly enhances China’s satellite networking capabilities for low and medium Earth orbits.

These rockets and the coastal spaceport will also allow China to steadily reduce its reliance on its older family of rockets that use toxic hypergolic fuels and launch from within China.

Next SpaceX launched another 21 Starliink satellites, including 13 with direct-to-cell capabilities, its Falcon 9 rocket lifting off from Cape Canaveral in Florida.

The first stage completed its 18th flight, landing on a drone ship in the Atlantic.

The 2025 launch race:

19 SpaceX
7 China
1 Blue Origin
1 India
1 Japan
1 Russia
1 Rocket Lab

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A Pakistani rover will fly on China’s Chang’e-8 mission to the Moon

9:18 am

Pakistan and China have finalized plans to place a Pakistani rover on China’s Chang’e-8 lunar lander mission.

This rover partnership was first announced in November 2024. This new release appears to provide a bit more information about the rover itself.

The rover will have a mass of around 35 kilograms and carry science payloads for studying lunar soil composition, radiation levels, plasma properties and testing new technologies for sustainable human presence on the Moon. It will also feature a collaborative scientific payload developed by Chinese and European researchers.

The Chang’e-8 mission is targeting a 2030 launch and will land in the Moon’s south pole region. China also claims it will initiate construction of China’s International Lunar Research Station (ILRS), but that’s a bit of hyperbole. All it shall be is another unmanned lander with two rovers and other instruments, hardly a manned base. What will matter will be what follows, and how quickly.

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Blue Ghost leaves Earth orbit

9:06 am

Artist rending of Blue Ghost on the Moon
Artist rending of Blue Ghost on the Moon

Firefly’s Blue Ghost lunar lander has successfully completed the mid-course correction engine burn that has taken it out of Earth orbit and into a transfer orbit to the Moon.

After a successful Trans Lunar Injection burn on Saturday, Feb. 8, Firefly’s spacecraft carrying NASA science and tech to the Moon has departed Earth’s orbit and begun its four-day transit to the Moon’s orbit. Blue Ghost will then spend approximately 16 days in lunar orbit before beginning its descent operations. Since launching more than three weeks ago, Blue Ghost has performed dozens of health tests generating 13 gigabytes of data. All 10 NASA payloads onboard are currently healthy and ready for surface operations on the Moon.

I post the artist’s rendering of Blue Ghost to the right to contrast its design with Intuitive Machines’ Odysseus lunar lander that fell over when it landed last year. Note how much lower to the ground Blue Ghost is. This will certainly reduce the chances it will have the same problem as Odysseus, even if one leg breaks upon landing.

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SpaceX launches another batch of Starlink satellites

8:28 pm

SpaceX today successfully launched 22 or 23 Starlink satellites (the reports vary), its Falcon 9 rocket lifting off from Vandenberg in California.

The first stage completed its 23rd flight, landing successfully on a drone ship in the Pacific. At present one other SpaceX booster has flown more, 25 times.

The 2025 launch race:

18 SpaceX
6 China
1 Blue Origin
1 India
1 Japan
1 Russia
1 Rocket Lab

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A pimple on Mars

3:44 pm

A pimple on Mars
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on November 1, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). Labeled simply as a “terrain sample,” it was likely not taken as part of any specific research project, but to fill a gap in the camera’s schedule in order to maintain its proper temperature. When the camera team does this they try to pick something interesting, and sometimes succeed.

I think they succeeded in this case. At first glance this appears to be a crater, but on closer inspection it is instead a small mound. The picture was taken in the winter, at the high latitude of 55 degrees north. The featureless white surface surrounding this dark mound is almost certainly the mantle of dry ice that falls as snow and covers the poles during the winter. If not that, it is then likely to be a water ice sheet that orbital data suggests covers much of Mars’ high latitudes.
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The payloads on Intuitive Machines Athena lunar lander, including a hopper and a rover

9:32 am

The Moon's south pole, with candidate landing sites
Click for NASA’s original image.

Link here. Athena is scheduled for launch on February 26, 2025 on a SpaceX Falcon 9 rocket. The article is mostly focused on describing the Gracie hopper, which will attempt to hop into the permanent shadows inside a nearby crater.

Though no announcement has ever been made, it appears the landing site for this lander has been changed. Previously it had been targeting a ridge adjacent to Shackleton Crater, at the south pole and shown on the map to the right. That location however required a launch in January. The delay to February seems to have shifted the landing site.

If all goes to plan, Athena will land on a plateau just 100 miles (160 kilometers) from the moon’s south pole. This region is thought to be rich in water ice, and IM-2 will prospect for the precious resource with the help of some ride-along robots, including a pioneering hopper nicknamed Gracie.

Though I cannot find any specific information on where this location is, I strongly suspect it is the site that Intuitive Machines’ lander, Nova-C (also dubbed Odysseus), attempted to reach last year.

The yellow boxes on the map indicate NASA’s candidate landing zones for its Artemis-3 manned mission.

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Germany commits almost a million dollars to build off-shore launch platform

9:08 am

The Germany government has now allocated $897,000 to a private consortium of four companies to help finance its promised but delayed an off-shore launch platform.

The North Sea launch platform is being developed by the German Offshore Spaceport Alliance (GOSA), a joint venture formed in December 2020 by Tractebel DOC Offshore, MediaMobil, OHB, and Harren Shipping Services. The platform will be constructed on the 170-metre-long Combi Dock I vessel and will accommodate launchers with a mass of between 36 and 52 tonnes. A 2020 feasibility study stated that the development and operation of the North Sea launch platform would cost between €22 and €30 million over six years.

The consortium had first announced the project in 2023, with the first launch of several suborbital test rockets in 2024. Since then little has been heard of this project, with those launches never occurring.

If built as promised, this platform would accommodate rockets as large as the Falcon Heavy. Its goal, besides offering the platform to all rocket companies, is apparently to give German rocket startups the option of a German spaceport so they don’t have to depend on other countries.

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Rocket Lab launches 5 Kinéis satellites for its constellation for the internet of things

1:54 pm

Rocket Lab today successfully launched five more internet of things satellites for the French company Kinéis, bringing its planned 25 satellite constellation to 20 satellites.

Rocket Lab has the contract to launch the entire constellation, and this was the fourth of five launches in that deal.

The 2025 launch race:

17 SpaceX
6 China
1 Blue Origin
1 India
1 Japan
1 Russia
1 Rocket Lab

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New calculations raise odds from 1.2% to 2.3% that asteroid will impact Earth in ’32

11:36 am

New calculations have increased the chances that the recently discovered asteroid 2024 YR4 will hit the Earth in 2032 from 1.2% to 2.3%.

Ongoing observations from ground-based telescopes involved with the International Asteroid Warning Network will continue while the asteroid is still visible through April, after which it will be too faint to observe until around June 2028.

NASA’s James Webb Space Telescope will also observe the asteroid in March 2025 to better assess the asteroid’s size. Currently the asteroid is estimated to be 130-300 feet across.

There remains great uncertainty in these numbers. We will really not know for certain if the asteroid will hit us until its orbit is studied for the next few years. Moreover, its size and make-up is also not known precisely yet. It could be as large as 320 feet, or as small as 130 feet. If the larger size, it poses a much greater risk, though that risk shrinks again if it is a rubble-pile asteroid that will simply break apart upon hitting the atmosphere.

This is not something to take lightly. Though the asteroid is not a world-destroyer, it does have the ability to cause significant damage, depending on where it hits. As its arrival is not for eight years, there is even time to quickly put together an unmanned mission to study it. (In the past I would never said this, but the domination of private enterprise in our present competitive space industry makes many things possible that were impossible when NASA and the government ran everything.)

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More indications balloon company Space Perspective is about to go bankrupt

11:24 am

New details reported yesterday strongly suggest that the high altitude balloon company Space Perspective has been unable to find new investors and is on the verge of shutting.

In a February 5 email to stakeholders, Interim CEO Michael Savage provided the latest updates, shedding light on failed funding efforts, the company’s dire financial situation, and attempts to restructure its debt. The email also acknowledged the gravity of the challenges ahead, hinting at the possible closure of operations.

Savage’s email outlined efforts to secure funding, including meetings with investors Fortuna and Broadlight, both of whom ultimately declined to proceed. Savage explained that while there was initial interest, the company’s mounting debt and financial instability deterred further investment. “Both [investors] have expressed interest, but despite the current circumstances and since Nov./Dec. 2024, they feel that their LPs would not stomach the numbers,” Savage wrote.

The company has previously announced it was shifting operations out of the Cape Canaveral area to a location 90 miles north where costs were less as it searched for new investors. This new report suggests this move and the search have not worked and the company will soon go out of business.

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ULA swapping Vulcan for Atlas-5 for first 2025 launch

11:18 am

ULA has decided to destack the Vulcan rocket it had planned as its first launch in 2025 (launching a military payload) and is now replacing it with one of its remaining Atlas-5 rockets to put the first batch of satellites for Amazon’s Kuiper internet constellation.

It appears the military is not ready to certify this launch after the second Vulcan launch in October 2024 experienced a problem with one of its strap-on boosters. The payload got to its proper orbit, but the loss of that booster’s nozzle appears to be an issue the military remains concerned about.

Rather than wait, ULA decided to switch to the Kuiper launch. The company wants to complete up to 20 launches in 2025, many of which are for Amazon using its last ten or so Atlas-5 rockets. When it can start commercial launches of Vulcan remains somewhat uncertain. The military has indicated it will make a final decision of certification in the spring, and has also said that first operational flight will follow soon after.

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Arthur Clarke in 1964 predicts the future in 2000

6:01 pm

An evening pause: Something to ponder over the weekend. The video only includes two short clips from this 1964 BBC show, and thus picks two that have ended up to be largely right. And though Clarke’s predictions were not all right, he hit the mark an incredibly high number of times.

Hat tip John Jossy.

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The weird landscape in Mars’ glacial country

1:33 pm

Overview map
Glacier country in the northern mid-latitudes of Mars

The weird landscape in Mars' glacier country

Cool image time! The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on November 4, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The science team labels the features in the lowland below the mesas “ribbed terrain.” To me it looks like peeling paint. What it is however is glacial material, a lot of it. The white dot on the overview map above marks the location, in the middle of the 2,000-mile-long mid-latitude strip in the northern hemisphere I label glacier country, because practically every high resolution image of this region shows glacial features like those on the right.

The mesa with the crater on top gives a clue on the geological history. This is chaos terrain, a region of random mesas cross-crossed with canyons and wide low plains, as shown in the inset. The entire surface was probably once at the same height as the top of that mesa with the crater. Over time glacial ice eroded away along fault lines. As that sublimation process continued, the fault lines widened to became canyons, then the flat plains, with the isolated mesas remaining between.

The “peeling paint” terrain is likely a layer of ice that is in the process of sublimating away.

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SpaceX to use older Dragon capsule for next manned launch because of issues with new capsule

9:12 am

Ars Technica today reported that because of continuing battery issues with the new Dragon manned capsule, SpaceX now plans to use the older Endurance Dragon capsule for the next manned launch to ISS and prevent further delays in bringing home the two Starliner astronauts.

NASA now believes the vehicle will not be ready for its debut launch until late April. Therefore, according to sources at the agency, NASA has decided to swap vehicles for Crew-10. The space agency has asked SpaceX to bring forward the C210 vehicle, which returned to Earth last March after completing the Crew-7 mission.

Known as Endurance, the spacecraft was next due to fly the private Axiom-4 mission to the space station later this spring. Sources said SpaceX is now working toward a no-earlier-than March 12 launch date for Crew-10 on Endurance. If this flight occurs on time—and the date is not certain, as it depends on other missions on SpaceX’s Falcon 9 manifest—the Crew-9 astronauts, including Wilmore and Williams, could fly home on March 19. They would have spent 286 days in space. Although not a record for a NASA human spaceflight, this would be far longer than their original mission, which was expected to last eight to 30 days.

The new capsule will then be used for Axiom’s fourth commercial flight to ISS, AX-4, presently scheduled for later in the spring.

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Astrobotic’s Griffin lunar lander gets commercial rover to replace NASA’s VIPER rover

11:51 am

Astrobotic’s commercial Griffin lunar lander has signed a deal with the space rover startup Venturi Astrolab to fly its FLEX Lunar Innovation Platform (FLIP) in place of NASA’s cancelled VIPER rover.

Last year NASA announced that it would be cancelling the VIPER lander that was set to travel aboard Astrobotic’s Griffin-1 lander, just months after the company’s first attempt at a moonshot failed. Now, the company has secured a contract to transport a rover developed by California-based aerospace firm Venturi Astrolab. That rover, the FLEX Lunar Innovation Platform, or FLIP for short, will be deployed to the Nobile region of the lunar south pole. The mission is scheduled for the end of the year and NASA’s contract with Astrobotic has been modified for the mission to serve as large lander demonstration flight.

This deal has significant ramifications outside of Astrobotic’s effort to make money hauling payloads to the Moon. Astrolab is one of three companies with NASA design contracts to develop a manned lunar rover for its later Artemis manned missions. By flying this smaller version now and successfully operating it on the Moon Astrolab puts itself in a better position to win the larger final rover contract from NASA, beating out Intuitive Machines and Lunar Outpost.

Astrolab was clearly aiming for the VIPER slot when it unveiled FLIP in October 2024. As I predicted then:

FLIP was clearly designed to match the fit of NASA’s now canceled VIPER rover that was to be launched on Astrobotic’s Griffin lander. Griffin is still being prepped for its lunar mission to be launched in 2025, but no longer has that prime payload. It is very obvious that Astrolab is vying to make FLIP that prime payload.

Note however how private enterprise moves. NASA can’t get it done but the competition to win contracts and make profits has these private companies scrambling to make things happen, quickly and cheaply.

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German startup Atmos gets FAA approval to launch its orbital research capsule

8:37 am

The German startup Atmos Space Cargo has now gotten its FAA launch license for testing the re-entry capability of its first orbiting research capsule, dubbed Phoenix.

That payload review was the final regulatory step needed for the mission, Sebastian Klaus, chief executive and co-founder of Atmos, said in an interview. The company doesn’t need a separate FAA reentry license because the spacecraft is planned to reenter over international waters, he said, and there are no licensing requirements by Germany, where the company is based.

Phoenix is fully assembled and has completed environmental testing, although the company is continuing to update software for the vehicle. “Physically and from a testing point of view, the spacecraft is ready for launch,” he said.

The capsule will be deployed immediately after the Falcon 9’s upper stage completes its de-orbit burn, so that it can then test that re-entry capability using an “inflatable decelerator”, likely a larger heat shield that can be used to protect a larger capsule.

This mission will be the first in a series of flights to test that inflatable system. If successful, the capsule will then be made available for orbital manufacturing for return to Earth, similar to the American startup Varda and its capsule.

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Martian hardened dunes untouched by dust devils

2:58 pm

Hardened dunes and dust devils
Click for original image.

Cool image time! The picture to the right, cropped to post here, was taken on September 26, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

I picked this image out of the MRO archive because of the many dust devil tracts that cut across the entire image, traveling in all directions with no apparent pattern. I also picked it because those tracks also cut across the many parallel small ridges that appear to be ancient ripple dunes that have since hardened into rock. What makes this landscape puzzling is how those dust devil tracks leave no evidence on those ridges. It is as if the ancient ripple dunes were laid down after the very recent dust devil tracks, even though that is chronologically entirely backwards.

Apparently, the dust devil tracks form because the devil only disturbs the dust that coats the flat low ground between the ridges. The ridges themselves are hard, and thus the devils, produced in Mars’ extremely thin atmosphere, can leave no mark.
» Read more

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Sunspot update: Sunspot activity continued its decline in January

11:58 am

Another month has passed, meaning it is time for another update on the Sun’s sunspot cycle, based on NOAA’s monthly graph tracking that activity but annotated by me with additional information.

In January the decline in sunspot activity on the hemisphere facing Earth since August 2024 continued, with the number of sunspots dropping to a level not seen since May 2023, when the Sun’s was ramping up from solar minimum to solar maximum.
» Read more

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Rocket Lab wins another multi-launch contract

9:26 am

Rocket Lab today announced it has won a four-launch contract with a Japanese company, the Institute for Q-shu Pioneers of Space, Inc. (iQPS), to launch its Earth-imaging satellites.

The multi-launch contract, signed in July 2024 [but apparently not publicly announced till now], includes three dedicated missions for launch in 2025 from Rocket Lab Launch Complex 1 in New Zealand, with a fourth launch scheduled for 2026. Each mission will carry a single satellite to form part of iQPS’ planned constellation of 36 synthetic aperture radar (SAR) satellites that are capable of collecting images through cloud and at night with a high resolution of less than a meter.

Rocket Lab previously completed one launch for iQPS in 2023, signing the contract and launching within four months.

Though the company has not yet announced officially the number of launches it hopes to fly in 2025, it appears the number will exceed the 14 orbital launches it completed in 2024. Before adding the three 2025 iQPS launches above, Rocket Lab had 18 Electron launches listed for 2025 at the rocketlaunch.live website, as well as the first launch of the company’s new Neutron rocket. Altogether that adds up to a total of 22 launches.

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ISRO considering doing more docking tests with Spadex satellites

9:16 am

India’s space agency ISRO has delayed the undocking of its two Spadex satellites as it considers a plan to do more docking tests.

The original plan was to have the chase satellite complete only one docking with the target vehicle, after which the two satellites would separate and spend the next two years doing different work. That plan is being reconsidered.

[Isro chairman V.] Narayanan said in Sriharikota that they have to think of the money involved in such projects and utilise it to the maximum. “Now we are in the process of reviewing when to do the undocking, the power connections and when to totally separate them again and dock again. All these processes are going on. We do not want to undock and leave it,” the Isro chairman said.

“We have loaded five kg of propellant on both the satellites. The propellant is needed for docking and undocking exercises. Currently we have 60 to 70 per cent of the propellant (as of January 29) remaining in the spacecraft. There are going to be a lot of experiments in the docking, undocking, power connection exercises and it is not a one time exercise,” he said.

Sources at ISRO also suggest there may be issues with the docking that still need analysis.

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SpaceX launches two high resolution Earth imaging reconnaissance satellites

8:34 pm

SpaceX tonight successfully launched Maxar’s last two of six high resolution Earth imaging reconnaissance satellites of its Worldview constellation, its Falcon 9 rocket lifting off from the Kennedy Space Center in Florida.

SpaceX placed the entire Worldview constellation in orbit over three launches. The first stage on today’s launch completed its fourth flight, landing back at Cape Canaveral, while the rocket’s two fairing halves completed their 21st and 23rd flights respectively.

This was also SpaceX’s second launch today.

The 2025 launch race:

16 SpaceX
6 China
1 Blue Origin
1 India
1 Japan

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Gullies on crater wall

3:11 pm

Gullies on Mars
Click for full image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on August 8, 2024 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The picture’s research focus is the gullies, which the scientists’ describe as “perched pole-facing gullies on ancient crater wall.” Perched means the start and end of each gully is on that crater wall, linked neither to the top or bottom of the wall itself. That the gully starts below the top means whatever caused it came from within the wall itself, not from the plateau above. That it ends before the crater floor means the process that cut the gully out was not powerful enough to reach the bottom.

That the gullies are on the interior north wall of this unnamed 25-mile-wide crater means they get less sunlight year round, something that must play a part in causing the gullies.
» Read more

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