Tag: engineering

Juno flies past the Jupiter moon Thebe

11:07 am

Jupiter's moon Thebes
Click for original image.

Though the Jupiter orbiter Juno is in its final orbits as it is running out of fuel, on May 1, 2026 it did a close fly-by of the 50 by 72 mile-wide Jupiter moon Thebe, getting within 3,100 miles.

The picture to the right, cropped and expanded to post here, is the best image released from that fly-by. It is very comparable to a photo taken by the Galileo orbiter on January 4, 2000. Both show the very large crater, dubbed Zethus.

The picture was taken by Juno’s Stellar Reference Unit (SRU) camera, designed not to do science but to “image star fields for navigation.” Thus, the picture is somewhat fuzzy, and was pointed poorly so the moon is on the far right, almost off camera.

It is very unclear how much longer Juno will function. It has apparently survived attempts by the Trump administration to zero out its operating budget, but there have been indications that its fuel supply is low.

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Multiple Russian, Chinese, and American satellites in maneuvering dance in orbit

9:41 am

Three different articles in the aerospace media today document multiple maneuvers by multiple military satellites from Russia, China, and America, either doing proximity operations near each other or moving close to another country’s satellites to spy on them.

This article in space.com describes the rendezvous operations of Russia’s Cosmos 2581, 2582, and 2583.

The satellites, known as COSMOS 2581 and COSMOS 2583, got within just 10 feet (3 meters) or so of each other on April 28, according to COMSPOC, a Pennsylvania-based space situational awareness software company. “This wasn’t a coincidental pass — COSMOS 2583 performed several fine maneuvers to maintain this tight configuration,” COMSPOC wrote in a May 1 post on X, which featured an animation of the rendezvous.

The two satellites and a third one, COSMOS 2582, launched to low Earth orbit in February 2025 atop a Soyuz rocket. According to COMSPOC, all three of them were involved in the recent rendezvous and proximity operations (RPO), as was “Object F,” a subsatellite previously deployed by COSMOS 2583.

Then russianspaceweb.com had two different articles describing different similar operations. First, a set of satellites launched in February 2026 appeared to be testing operations in very low orbit, illegally transmitting data using frequencies that the International Telecommunications Union (ITU) allocates for amateur radio operations.

Finally, the website reported a complex dance between Russian, American, and Chinese satellites in geosynchronous orbit.

Almost immediately after entering the geostationary orbit, Kosmos-2589 was “approached” by a presumed American inspector satellite, officially known as USA-325. On April 19, 2026, the US satellite, itself drifting eastward relative to the geostationary position and the Earth’s surface, seemingly overshot Kosmos-2589, but once the Russian satellite stabilized at 98 East longitude, USA-325 stopped and returned. By around April 28, 2026, … one approach under favorable lighting conditions for the “inspector” was within 13 kilometers from Kosmos-2589, according to a team of observers from Exton, PA, cited by COMSPOC.

In turn … Kosmos-2589 essentially occupied a position registered by China under designation CHNSAT-98E, with three Chinese commercial and military satellites deployed in relative vicinity of that location.

… Moreover, in April 2026, China’s presumed inspector satellite — TJS-10 — pre-positioned itself at 92.4 degrees East longitude after an easterly drift, which would put it on a rendezvous course with Kosmos-2589 at 98.0 East longitude. Instead, the Chinese satellite stopped its drift with a maneuver on May 1, 2026, which “fixed” it in a geostationary orbit at 92.4 degrees East longitude, in the vicinity of the US AEHF military satellite, which carries high-security communications of the US military and its allies.

With this last story, we have this almost absurd situation: The U.S. satellites are spying on Russian satellites, which are spying on Chinese satellites, which are spying on American satellites.

All this maneuvering however indicates once again that the ability of commercial satellites to rendezvous with other objects — either to de-orbit space junk or repair damaged satellites — is only going to get better. The military might control these capabilities now, under a veil of secrecy, but such capabilities always leak out into the private sector shortly thereafter.

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Lockheed Martin fights request to ease 2018 restrictions on Northrop Grumman’s solid rocket business

8:58 am

A legal fight between Lockheed Martin and Northrop Grumman has broken out over Northrop Grumman’s recent request to the Federal Trade Commission (FTC) to ease a 2018 consent order that restricts Northrop Grumman’s ability to market its solid rocket motors (SRM).

On April 2, Northrop petitioned the Federal Trade Commission to drop a 2018 consent order helmed when Northrop acquired solid rocket motor maker Orbital ATK. The consent agreement requires Northrop to supply SRMs to its competitors in the missile market on a non-discriminatory basis and to firewall its SRM business away from its other operations.

At the time, the FTC believed the measure was necessary due to Northrop’s status as a prime contractor and Orbital ATK’s position as one of only two American makers of solid rocket motors.

Northrop is not a major manufacturer in the American missile space, which is dominated by Raytheon and Lockheed. However, if the order is dropped, Northrop will be able to vertically integrate its solid rocket motor business with any munitions the company designs in the future — including potentially prioritizing SRM supplies for Northrop over competitors, Lockheed stated in a response to the petition.

This consent order has prevented Northrop from marketing its solid-fueled rockets openly. Instead, it appears it forces the company to sell to its competitors, such as Lockheed, who then garners the big profits in marketing them. That order I think has also limited Northrop’s ability to use its boosters for other purposes, such as launching satellites.

Overall it appears this consent order has been very counter-productive, in hindering competition in the American solid-fueled rocket industry. At present there is a shortage of production capacity in the U.S., so much so that the Italian rocket company has moved in to market its own solid-fueled rockets here. In fact, it is selling its rockets to Lockheed and Raytheon, which suggests Northrop is entirely justified in asking to be released from this order.

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Indian rocket startup Skyroot raises $60 million in private investment capital

8:37 am

Even as it prepares for the first orbital launch attempt of its Vikram-1 rocket, the Indian rocket startup Skyroot has raised $60 million in private investment capital in a recent funding round, bringing the total raised by the company to $160 million.

The startup announced it had raised $60 million at a valuation of $1.1 billion prior to the funding. The round was co-led by early Google investor Ram Shriram’s venture capital firm, Sherpalo Ventures, and Singapore’s sovereign wealth fund, GIC. New investors in the round include funds managed by BlackRock, Playbook Partners, Shanghvi Family Office, and others. Existing investors that also participated in the round include the founders of Greenko Group and Arkam Ventures.

The company hopes to launch Vikram-1 in about two months, though no specific launch window has been announced. The rocket is presently being shipped to India’s Sriharikota spaceport.

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Will Canada’s Telesat really complete its Lightspeed constellation by 2028?

11:26 am

According to the most recent financial report from the Canadian satellite communications company Telesat, it expects its Lightspeed low-Earth-orbit (LEO) satellite constellation to be launched and operational by 2028.

During the first quarter, Telesat invested $171 million into the Lightspeed program, reflecting $19 million in operating expenses and $152 million in capital expenditures, bringing its total investment to date to approximately $2.7 billion.

The company reported advancing through several technical milestones in early 2026. “During the quarter, we held further design reviews with our satellite and launch vehicle dispenser manufacturers and progressed our work on user terminals, network and satellite operations software development, and ground station deployments,” noted Telesat President and CEO Dan Goldberg.

The company confirmed it remains fully funded, utilizing cash on hand and existing financing facilities, to reach full global commercial service around the end of the first quarter of 2028.

At the moment however the company has launched no satellites in this LEO constellation. Moreover, in a recent amendment to its FCC application, the company reduced the size of the constellation from 1,671 satellites to only 300, with no explanation.

We shall see what happens. My instincts sense a bit of blarney here. This constellation will likely launch, but I think the company’s proposed schedule is questionable.

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Curiosity unintentionally picks up a rock slab

11:15 am

Sequence showing slab picked up and then dropped
Click for movie. Original images found here, here, here, and here.

In their latest drilling campaign using the drill on the Mars rover Curiosity, the science team picked up a big surprise that could have been a serious problem, but turned out all right in the end. When they tried to extract the drill from the hole, the drill instead stayed stuck to the rock, and picked the whole rock up instead.

The four images to the right show the sequence, sourced from here, here, here, and here.

On April 25, 2026, Curiosity drilled a sample from a rock nicknamed “Atacama,” which is an estimated 1.5 feet in diameter at its base, 6 inches thick and weighs roughly 28.6 pounds (13 kilograms). When the rover retracted its arm, the entire rock lifted out of the ground, suspended by the fixed sleeve that surrounds the rotating drill bit. Drilling has fractured or separated the upper layers of rocks in the past, but a rock has never remained attached to the drill sleeve. The team initially tried vibrating the drill to shake off the rock, but saw no change.

Then, on April 29, they tried reorienting Curiosity’s robotic arm and vibrating the drill again. Imagery in the GIF shows sand falling from Atacama, but the rock stayed attached to the rover.

Finally, on May 1, Curiosity’s team tried again, tilting the drill more, rotating and vibrating the drill, and spinning the drill bit. The team planned to perform these actions multiple times but the rock came off on the first round, fracturing as it hit the ground.

Had they not been able to release the rock it could have seriously impacted the mission, even ended it.

As noted by the science team in their own update today about this situation:

Future activities involve wrapping up the drill campaign on Atacama and, nominally, seeking a more firmly rooted drill target in order to collect drill tailings for analysis, which were lost from Atacama as part of the effort to dislodge the drill bit from the rock.

In other words, they are going to have hunt around for a better drill spot, as they really do want to study some drill samples at this location. They have left the boxwork area and have moved uphill closer to the pure sulfite unit, and want to see how the geology has changed.

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The UK’s Sutherland spaceport now appears dead

9:45 am

Proposed or active spaceports in North Europe
Proposed or active spaceports in North Europe

In a news report yesterday about the failure of the United Kingdom’s rocket startup Orbex in February 2026, the following details about the Sutherland spaceport in Scotland suggests that spaceport is now defunct, with little chance of being revived.

Administrators say that one of Orbex’s key remaining assets is the Sutherland Spaceport site near Melness – although the only construction work undertaken at the site is some 600m of access road. The company responsible for it, Sutherland Spaceport Ltd (SSL), remains financially stable, according to administrators. This means the site could still be sold or potentially restarted, even though no launch activity is currently taking place.

The spaceport sits on land leased from local crofters under a long-term arrangement managed through Highlands and Islands Enterprise. SSL holds a 50-year sublease, with an option to extend for 25 years, and a break clause in 2027.

Orbex had originally intended to launch from Sutherland — close to the rocket factory it had built — but local opposition by billionaire Anders Holch Povlsen (who is a major owner in the competing Saxavord spaceport on the Shetland Islands) as well as endless bureaucratic delays from the UK’s Civil Aviation Authority made that impossible. The company attempted to switch its launches to Saxavord, but the cost and new licensing requirements were too much.

No other launch company has expressed any interest in using Sutherland, and it appears none will be forthcoming in the near future. The red tape in the UK, combined with that powerful local opposition, has made Sutherland a pariah to the smallsat rocket companies looking for launch sites.

Though the spaceport might say it is “financially stable”, without any customers I guarantee it is going to disappear at some point.

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Former NASA administrator Bridenstine moves from lobbyist to CEO of orbital tug startup

9:29 am

Jim Bridenstine
Jim Bridenstine testifying before Congress
as a big space lobbyist

Former NASA administrator Jim Bridenstine has taken the job of CEO for the orbital tug startup Quantum, ending his post-NASA career as a lobbyist for some of the biggest old space companies.

Since his departure from NASA, Bridenstine has worked as a managing partner of The Artemis Group consulting firm, and the appointment to Quantum Space marks the first time he has taken up an official corporate post, he told Breaking Defense.

“I was asked several times” to be a CEO, he said, but “never accepted until now.”

Bridenstine waxed enthusiastic about Quantum Space’s plans for its Ranger spacecraft that is being designed to support “sustained maneuver for dynamic space operations.”

Bridenstine’s lobbying for the Artemis Group was mostly aimed at encouraging a giant NASA space program, comparable to the 1960s Apollo effort, with the main beneficiaries the older established companies like Boeing, Lockheed Martin, and Northrop Grumman, and at the expense of the new space industry led by SpaceX. That effort was largely a failure, as it has become very clear these old companies can’t get the job done, at least not at a price anyone can afford.

At Quantum Bridenstine is back on the side of new space, pushing a new orbital tug company whose Ranger tug can “carry a whopping 4,000 kilograms (8,818.49 pounds) of hydrazine fuel to orbit, Bridenstine explained, and will use that fuel for both chemical propulsion and electric propulsion.” It plans on launching the first Ranger demo mission in early 2027, after which the company hopes to win both commercial and military contracts using Ranger’s tug capabilities.

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SpaceX launches 24 more Starlink satellites

10:15 pm

SpaceX tonight successfully launched another 24 Starlink satellites, its Falcon 9 rocket lifting off from Vandenberg Space Force Base in California.

The first stage completed its 24th flight, landing on a drone ship in the Pacific.

The leaders in the 2026 launch race:

55 SpaceX
23 China
8 Russia
6 Rocket Lab

For the third straight year SpaceX leads the entire world combined in total launches, 55 to 44.

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Lockheed Martin joins partnership to build off-shore launch platform

9:01 am

Artist's rendering of Seagate platform
Artist’s rendering of Seagate platform. Click for original.

According to a post yesterday by Johnathon Caldwell, a vice president and general manager at Lockheed Martin, the company will be joining the partnership of Seagate and Firefly to build an off-shore launch platform from which Firefly hopes to launch its Alpha rocket.

The three companies will work together on mission‑application concepts and flight‑demonstration projects that leverage Seagate’s Gateway offshore launch platform. This sea‑based launch facility, combined with Firefly’s responsive Alpha launch vehicle, will provide rapid, flexible access to space from diverse locations, an essential capability for tactical payloads and national‑security missions.

Seagate only went public with this project in late March. Firefly signed on in April. Now Lockheed Martin has joined. It appears the concept has great potential for it to attract so much interest so quickly. Nor should this be surprising. The Chinese have been very successful in the past two years with its own sea platform, and the concept was proven years ago with Sea Launch.

Though Firefly presently launches Alpha from Vandenberg, the company also has deals with Sweden’s Esrange spaceport and a lease for a pad at Cape Canaveral. It has also been studying launching from a proposed commercial spaceport in northern Japan. This partnership with Seagate might allow it to abandon all these land-based sites, or supplement them.

Lockheed Martin in the past has invested heavily in new rocket companies, including Rocket Lab, ABL, Orbex, and X-Bow. Of these, only Rocket Lab has succeeded. With this deal Lockheed is looking for another option for getting its commercial and military payloads into orbit, with a much greater launch flexibility.

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Blue Origin’s 1st unmanned lunar lander completes ground testing

8:01 am

Blue Moon MK-1 in testing chamber
Blue Origin’s unmanned Blue Moon MK-1 lunar lander
in test chamber. Click for original image.

Blue Origin’s 1st unmanned lunar lander, dubbed Blue Moon Mark-1 (MK-1) or “Endurance,” has completed ground testing at the Johnson Space Center in Houston, prior to its planned launch before the end of this year.

The NASA press release however said nothing about the results of that testing.

Testing in NASA Johnson’s Chamber A, one of the world’s largest thermal vacuum test facilities, enabled engineers to model the vacuum of space and the extreme temperature conditions the spacecraft would experience during flight. By recreating these conditions on the ground, teams evaluated system performance and verified structural and thermal integrity prior to launch. NASA and Blue Origin will incorporate lessons learned from MK1’s design, integration, and testing to support NASA’s future Artemis missions that will return American astronauts to the Moon.

Normally when such testing is completed the press release touts their success. The vagueness in the language above is to my instincts somewhat concerning. Did they find something in that testing that needs modification prior to launch? If so, getting this lander off the ground before the end of the year is going to be questionable, as those fixes will have to be incorporated and then tested again.

Any delay such as this would in turn impact the first test in orbit of Blue Origin’s manned Blue Moon MK-2 lunar lander, scheduled for late 2027 during the Artemis-3 manned mission, where NASA wishes to test rendezvous and docking for both Blue Origin’s lander and SpaceX’s Starship.

Some clarity here would be reassuring.

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Sunspot update: The number of sunspot continues to decline

9:21 am

For only the second time since I started this website in 2010, I forgot last month to do my monthly sunspot update. No matter. The Sun’s behavior in producing sunspots in the past two months was actually amazingly similar, so doing both months at once works.

According to NOAA’s monthly graph of the sunspot activity on the Earth-facing hemisphere, the amount of sunspots in both March and April continued to be low, well below the predictions put forth by NOAA’s panel of scientists in their April 2025 prediction.

That graph is below, annotated with extra information by me to illustrate the larger scientific context.
» Read more

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Is SpaceX buying a 200-plus square mile patch of Louisiana?

11:20 am

Pecan Island SpaceX facility?

According to a real estate agent in Louisiana, there is credible but unconfirmed evidence that SpaceX is in the process of buying a 136,000 acre plot of land owned by Exxon on the coast of Louisiana west of New Orleans, near the unincorporated town of Pecan Island.

The rumor — repeated in private group chats, in coffee shops in Abbeville, and in hunting camps from Forked Island to Grand Chenier — is that SpaceX has acquired or is in the process of acquiring approximately 136,000 acres of coastal Louisiana marshland straddling Pecan Island and Freshwater City in Vermilion Parish. The footprint reportedly stretches from south of Highway 82 down to the Gulf of America, encompassing some of the most ecologically rich and economically untouched wetlands in North America.

If true, this would be the single largest private land acquisition in the modern history of Vermilion Parish. To put it in perspective: 136,000 acres is roughly 212 square miles — bigger than the entire city of New Orleans. SpaceX’s existing Boca Chica/Starbase facility in South Texas, which has reshaped Brownsville’s economy and real estate market in just five years, is built on a footprint of less than 100 acres. A 136,000-acre Louisiana site would not be a launch pad. It would be an industrial campus on a scale never before seen in American aerospace.

I must emphasize that this agent is speculating, and that there is no confirmed evidence that SpaceX is the rumored buyer. At the same time, the agent has done his homework. This purchase by SpaceX would make sense on multiple levels. It would give it a very large facility smack dab between Boca Chica and Florida, on the Gulf, so that if Starships are manufactured here they could be easily shipped both east and west to those launch sites. This facility would also give SpaceX to option of shifting more of its operations out of unfriendly California and to a more friendly state, something Elon Musk has been doing since the Covid panic.

It would allow for the construction of larger data centers and satellite manufacturing factories, without much opposition from local communities.

Finally, there is the possibility this location could also serve as a spaceport, though it would only work well for polar orbits.

Stay tuned. If this speculation is true we should find out momentarily.

Hat tip reader Steve Golson.

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SpaceX launches South Korean Earth imaging satellite plus 44 other smallsats

12:06 am

SpaceX at about midnight tonight successfully launched a South Korean Earth imaging satellite as well as 44 other smallsats, its Falcon 9 rocket lifting off from Vandenberg Space Force Base in California. As of posting the satellites had not yet been deployed.

The first stage (B1071) completed its 33rd flight, landing back at Vandenberg, 50 days after its previous flight. With this flight, the booster moves into a third place tie with the Atlantis shuttle shuttle in the rankings of the most reused launch vehicles:

39 Discovery space shuttle
34 Falcon 9 booster B1067
33 Atlantis space shuttle
33 Falcon 9 booster B1071
32 Falcon 9 booster B1063
31 Falcon 9 booster B1069
28 Columbia space shuttle
27 Falcon 9 booster B1077
27 Falcon 9 booster B1078

Sources here and here.

The leaders in the 2026 launch race:

54 SpaceX
23 China
8 Russia
6 Rocket Lab

For the third straight year SpaceX leads the entire world combined in total launches, 54 to 44.

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$2 bill that Gene Cernan carried on three missions sells for more than $90K

3:23 pm

The $2 bill that astronaut Gene Cernan carried on all three of his space missions in 60s and 70s has now sold at auction for $91,519.

Signed and flight-certified by Cernan, the bill is encapsulated and graded by Paper Money Guaranty (PMG) as Choice Fine 15. The holder notes its provenance as having been flown aboard Gemini 9A (1966), Apollo 10 (1969), and Apollo 17 (1972), and traces its origin to Cernan’s personal collection.

A signed letter of provenance from Cernan states that the bill was originally owned by his father and later carried by the astronaut on each of his spaceflights. The letter documents its presence during low Earth orbit on Gemini 9A, lunar orbit on Apollo 10, and on the lunar surface during Apollo 17.

This auction was space-focused and realized a total of $1,764,603. It included items from a number of other Gemini and Apollo missions, including an American flag that astronaut Dave Scott flew on Gemini 8, the mission that achieved the first docking in space but then had to due an emergency splashdown because a thruster began firing uncontrollably. It sold for $47,406.

Hat tip reader Wayne DeVette.

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No Starliner mission to ISS this year

3:07 pm

Though in February 2026 NASA officials suggested there might be a Starliner cargo mission to ISS sometime in April 2026, the new schedule released today for ISS manned and cargo missions for the rest of this year shows no Starliner missions at all.

The press release hinted an extra Starliner mission could be added, but don’t but too much faith in this:

Launch opportunities for NASA’s uncrewed Boeing Starliner-1 cargo mission remain under review as teams continue working through technical issues discovered during the Crew Flight Test in 2024, as well as final actions from the Program Investigation Team report. The agency is assessing operational readiness and space station traffic to determine the earliest feasible launch window.

What I think is happening in NASA is that the agency under Isaacman wants a better assurance from Boeing that the problems with Starliner have been fixed, and Boeing is having trouble satisfying them. If so, it seems he is doing what I suggested in February, demand from Boeing the highest quality work or don’t buy anything from it at all. If so kudos to Isaacman.

It is also possible Isaacman doesn’t want to spend extra money paying Boeing for this extra cargo mission to prove out Starliner’s systems. Boeing’s contract for Starliner is fixed price, and the capsule’s multiple problems has now cost the company more than a billion dollars. It is unlikely it will have make a profit on it, which is why it wants NASA to pay for that cargo flight.

Either way, the first operational manned mission using Starliner continues to recede into the future, to the point where ISS might be gone before the capsule is finally okayed for manned flights.

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SpaceX launches 29 more Starlink satellites

11:47 am

SpaceX today successfully placed another 29 Starlink satellites into orbit, its Falcon 9 rocket lifting off from Cape Canaveral Space Force Station in Florida.

The first stage (B1069) completed its 31st flight, landing on a drone ship in the Atlantic, 63 days after its previous flight. It remains in 6th place in the rankings of the most reused launch vehicles:

39 Discovery space shuttle
34 Falcon 9 booster B1067
33 Atlantis space shuttle
32 Falcon 9 booster B1071
32 Falcon 9 booster B1063
31 Falcon 9 booster B1069
28 Columbia space shuttle
27 Falcon 9 booster B1077
27 Falcon 9 booster B1078

Sources here and here.

The leaders in the 2026 launch race:

53 SpaceX
23 China
8 Russia
6 Rocket Lab

For the third straight year SpaceX continues to lead the entire world combined in total launches, 53 to 44.

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FCC approves new spectrum rules to give new constellations more capacity

9:00 am

The Federal Communications Commission (FCC) yesterday approved new spectrum rules proposed by SpaceX that will increase the capacity of all the new low-Earth-orbit constellations by as much as seven times.

The commission introduced the new rules earlier this month before approving them at a Thursday meeting. The revamp targets the Equivalent Power Flux Density (EPFD) rules, which were developed in the late 1990s and limited the amount of energy satellite systems could transmit to and from ground equipment. The regulations were also designed to prevent radio signal interference between higher-orbiting geostationary satellites and lower-orbiting systems. But during the vote, Carr said the decades-old existing rules were “holding back” newer satellite internet offerings.

“Modern satellite designs make it far easier to share spectrum than what yesterday’s regulations assumed. We can do a lot better,” he said. Carr touted the 7x increase when the commission found the revamped rules could enable “eight satellites to provide service simultaneously in a given geographic area and frequency band, instead of being effectively limited to one satellite under current EPFD limits.”

The FCC was sold on this change after SpaceX conducted its own tests in orbit, using Starlink satellites, to demonstrate it could work. The rule change will benefit all the new constellations, which is why Amazon’s Leo constellation supported the change as well.

The speed in which the FCC acted on this matter must also be noted. It did not bother with long studies of its own. It quickly reviews SpaceX’s work, realized it made sense, and scheduled the vote at its very next meeting. This constrasts starkly with the FCC during the Biden administration, which routinely slow-walked or even opposed such suggestions.

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Russia completes 1st test, suborbital, of its new Soyuz-5 rocket

8:21 am

According to Russia’s state-run press, it successfully completed the first suborbital test flight of its new Soyuz-5 rocket, the rocket lifting off from Baikonur in Kazahkstan on April 28, 2026 carrying a dummy payload.

A special launch was conducted today as Soyuz-5, a new Russian carrier rocket with the world’s most powerful liquid-fuel engine, blasted off. <...> Operating the rocket will make it possible to substantially reduce the unit cost of the payload capacity. This will have a positive impact on the economics of space launches,” the Russian state-owned space corporation quoted its CEO Dmitry Bakanov as saying.

The rocket will eventually be able to place about 17 tons in low Earth orbit, making it more powerful than the Soyuz-2 — now used to launch capsules and satellites — but less powerful than Russia’s Proton rocket, used to launch station modules and other more demanding missions.

Soyuz-5 however is not reusable, so it will remain more expensive to use that the new rockets being developed everywhere else outside Russia. Like all of Russia’s rockets, stages will continue to fall inside Russia with each launch. In this case, the first stage and fairings crashed somewhere in Russia, while the second stage splashed down in the Pacific.

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The present state of India’s space program

10:44 am

India's Bharatiya Antariksh Station as outlined in 2024
India’s Bharatiya Antariksh Station as outlined in 2024.
Click for original image.

India’s space agency ISRO yesterday released its annual report [pdf], outlining its accomplishments over during 2025.

Like all such reports, it is filled with glowing superlatives. It provides little concrete information about the agency’s more serious issues, such as what it is doing to fix the upper stage of its PSLV rocket, which has failed on the last two consecutive launches. All the annual report says on this subject is the following:

Based on the recommendations of the National Level Committee comprising of eminent experts from academia & industry, the third stage of PSLV i.e., HPS3 motor with modified design was realised and two static tests were successfully completed on October 06, 2025 and November 19, 2025 as in flight, from SDSC, SHAR. The overall performance of the motor and subsystems were as expected and closer to nominal performance.

The problem is that these fixes and tests did not work. The second failure of the upper stage occurred in January 2026, less than two months later. The annual report should have noted this fact, but did not.

As for India’s planetary program, digging out the present schedule from the report is difficult. Based on this review of the annual report, the dates are as follows:

  • Chandrayaan 4 lunar sample return mission: October 2027.
  • Venus Orbiter: March 2028.
  • Chandrayaan 5 /LUPEX lunar lander: September 2028.
  • Mars Lander: No target launch date as yet.

Expect these dates to be delayed.

The report also gives a detailed description on India’s Gaganyaan manned program, but little information about the planned unmanned tests that were planned for this year, leading to a manned orbital mission next year. At the moment the schedule appears to be experiencing delays, caused mostly by the PSLV launch failures. It appears ISRO wants this issue resolved before it launches that first unmanned Gaganyaan test flight.

If you want to get an overview of India’s government space program, this annual report is a good place to start. It will at least provide a baseline on which you can build a deeper knowledge.

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Falcon 9 upper stage to hit the Moon in August

9:28 am

Falcon 9 impact on Moon in August
Click for original image.

According to astronomer Bill Gray, who also tracks orbital objects, the upper stage of the Falcon 9 that launched Firefly’s Blue Ghost and Ispace’s Hakuto-R2 lunar landers in January 2025 will hit the Moon on August 5, 2026.

For some time, I’ve provided some software tools astronomers can use to identify satellites in their data. I use the US military’s publicly available satellite data for many objects, and compute orbits for high-orbiting objects the military doesn’t track.

This object falls squarely in the latter category. In September 2025, my software for computing orbits analyzed the observations and projected an impact with the moon on 2026 August 5.

While this looked like a pretty solid prediction, I couldn’t be totally sure of it at the time. The motion of space junk is mostly quite predictable; it simply moves under the influence of the gravity of the earth, moon, sun, and planets. We know those with immense precision. If those were the only factors involved, I could probably tell you where and when this object would hit the moon to within a few meters and a fraction of a second.

The problem is that space junk in general, and 2025-010D in particular [the upper stage], is also pushed around by sunlight (“solar radiation pressure”). This is an extremely gentle force, but over months, it can really build up. And it’s not entirely predictable. As an object tumbles, it may catch more or less sunlight, and may reflect some of it sideways. So sunlight is mostly pushing the object away from the sun, but there’s a slight bit of pushing in other directions as well.

With enough data, we can actually figure out where the forces are pushing an object. But they do change a little over time in ways that aren’t perfectly predictable. So I can be sure it will impact near the time and place I’ve predicted, but those varying forces mean that the actual impact will be at least a little off from that time and place. That’s the largest source of uncertainty in all this, and there’s no way to correct for it; we just have to wait and see what actually happens. (But come August, we’ll have a quite precise idea of where it will hit.

At present, Gray predicts the impact will occur at 2:44 am (Eastern) on August 5, 2026. The image above is his present estimate of where it will hit, as seen from Earth. If this prediction holds, the impact itself will likely not be visible from Earth, as it will occur in daylight and at the very western limb of the Moon. This prediction however could change somewhat in the next few months.

When it hits Gray estimates the stage will be moving at about 5,400 miles per hour, or 1.51 miles per second. Expect the science team for Lunar Reconnaissance Orbiter (LRO) to try to image this impact after the fact.

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Two launches yesterday

8:39 am

Both SpaceX and Arianespace successfully completed orbital launches yesterday. First, SpaceX placed another 24 Starlink satellites into orbit, its Falcon 9 rocket lifting off from Vandenberg Space Force Base in California. The first stage completed its 13th flight, landing on a drone ship in the Pacific.

Next, Arianespace placed 32 more Amazon Leo satellites in orbit, its Ariane-6 rocket lifting off from France’s French Guiana spaceport in South America. The expendable Ariane-6 launched for the second time in its most powerful configuration, with four side boosters. This was also Arianespace’s second launch this year, so it remains off the leader board below. It is also the second launch in Arianespace’s 18-launch contract with Amazon to launch Leo satellites. The satellites were placed at an orbit of 465 kilometers, which SpaceX has claimed violates its Starlink orbital territory. Amazon has agreed what it is doing is a violation, but says it will continue to do so for this and two more launches.

With this launch, Amazon now has 302 Leo satellites in orbit, out of the 1,616 it needs to launch by July to meet its FCC license requirement. The company’s request for a time extension is presently pending at the FCC.

The leaders in the 2026 launch race:

52 SpaceX
23 China
8 Russia
6 Rocket Lab

For the third straight year SpaceX continues to lead the entire world combined in total launches, 52 to 44.

Russia was also supposed to do a test suborbital launch of its new Soyuz-5 rocket. As of posting I have not been able to confirm whether the launch took place.

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Canada cancels $72 million contract to build constellation to track wildfires

9:48 am

In what appears to be an unexpected decision, the Canadian government this past week suddenly terminated a $72 million contract with the company Spire Global Canada to build a constellation of satellites designed to locate and track wildfires.

According to a Form 8-K filed with the U.S. Securities and Exchange Commission, Spire Global received a written notice on April 23, 2026, from the Minister of Public Works and Government Services (PWGS) terminating the agreement “for convenience,” effective immediately. The Phase B and C contract would have had an aggregate value of $71.8 million, including harmonized sales tax, if all contractual milestones had been achieved. The value of the overall WildFireSat satellite constellation including Phase D for manufacturing, system assembly, and integration is $106 million.
WildFireSat mission setback

This represents a serious setback for the Canadian Space Agency (CSA) and other government departments who are participating in the mission. Only a month ago the project was being touted as high return-on-investment climate mission in the annual Canadian Space Agency 2026–27 Departmental Plan.

The plan had called for a constellation of nine smallsats, with one back-up ready for launch on the ground.

No reason has been given for the cancellation. The Canadian Space Agency merely stated that “The Government of Canada will soon be engaging with industry and begin working closely with stakeholders on how best to advance the continued development of this important mission.” Spire Global meanwhile has until May 7th to apply for settlement costs.

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SpaceX’s Falcon Heavy launches Viasat communications satellite

9:32 am

Falcon Heavy at lift-off today
Falcon Heavy at lift-off today

SpaceX this morning successfully placed a Viasat communications satellite into orbit, its Falcon Heavy rocket lifting off from Cape Canaveral Space Force Station in Florida.

This was the first Falcon Heavy launch in about eighteen months. The two side boosters completed their 2nd and 22nd flights respectively, landing back at Cape Canaveral. Fairings completed their 18th and 25th flights respectively.

The leaders in the 2026 launch race:

51 SpaceX
23 China
8 Russia
6 Rocket Lab

For the third straight year SpaceX continues to lead the entire world combined in total launches, 51 to 43.

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Rocket Factory Augsburg submits license application for a Saxavord launch window opening on July 1, 2026

8:30 am

Proposed or active spaceports in North Europe
Proposed or active spaceports in North Europe

The German rocket startup Rocket Factory Augsburg has now submitted a new marine license application to allow it to attempt the first launch of its RFA-1 rocket from the Saxavord spaceport on the Shetland Islands in Scotland, with a launch window opening on July 1, 2026.

Rocket Factory had hoped to do this launch in 2024, but lost the first stage mere weeks before launch when it exploded during a final static fire test on the launchpad. Since then the company has undergone a management shake-up and made major changes to operations and its rocket.

To do this launch, however, it needs a new launch license, and that is a major problem. The company’s announcement is filled with numerous vague qualifiers, as it knows getting the bureaucracies in the United Kingdom to move quickly in this matter is nigh on impossible.

This is a legally required step for planning, and a good sign of how far we’ve come – but it’s not a launch date just yet. We applied for this window because we’re working hard to be ready – and we’re getting closer every day.

So: the application means we’re entering a new phase of preparation. Still, as with any first-ever launch, there are uncertainties, and the schedule may evolve. Further specific details around launch timing will be released through the appropriate channels closer to the time. We’ll keep you posted!

In other words, the company will not be surprised if it doesn’t get its license in time for July, and is prepared for delays.

Another German rocket startup, Isar Aerospace, has been trying to launch its Spectrum rocket from Norway’s Andoya spaceport since January, with the launch scrubbed several times due to technical issues. Right now the launch its tentatively scheduled for May, which means the race to achieve the first orbital launch from Europe is tightening considerably.

If I had to place a bet, my money would be on Isar, not Rocket Factory, and the reason would be because I truly doubt the British bureaucracy will issue a license on time. Its track record has been abysmal, sometimes taking years to give an okay. In this case it might not take that long, since Saxavord has gotten all its own permits already (after years of waiting) but no one should be confident it will act with speed. And it is clear that the people at Rocket Factory are not.

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A cool crater in Starship’s prime candidate zone on Mars

11:14 am

Overview map

Crater in the Starship landing zone on Mars
Click for original image.

Cool image time! The picture to the right, rotated, cropped, reduced, and enhanced to post here, was taken on August 16, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). In mid-March it was featured as a captioned image by MRO’s science team. From their caption:

When they form, impact craters dig up material from below the surface and throw it outwards into what geologists call an ejecta blanket. The fastest ejected material travels the furthest so material from different depths can end up at different distances from the crater.

This HiRISE image shows a pedestal crater in Arcadia Planitia that has material of different brightness and color at various distances from the crater. This could tell us more about the material that’s buried below the surface here, but the situation is complex.

The caption however fails to mention the most interesting two aspects of this crater’s ejecta blanket. One, it suggests strongly that there was a lot of near surface ice at impact that melted to produce this splash apron.

Second, and even more intriguing, the 3,100-foot-wide unnamed crater is located smack dab in the middle of the candidate landing zone on Mars for SpaceX’s Starship spacecraft, as shown by the overview map above. The white dot marks the location of this crater, while the red dots mark the four prime landing sites, as suggested by scientists in a 2021 paper [pdf], based on conclusions drawn from two workshops organized by SpaceX and these scientists. The other dots are other MRO images of this region, and include a number of potential secondary landing sites.

This zone is in the northern lowland plains of Mars, in a mid-latitude region where near-surface ice is plentiful. The splash apron of this crater provides further evidence of that near surface ice.

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ULA launches 29 Leo satellites

8:29 am

ULA last night successfully launched another 29 Amazon Leo satellites into orbit, its Atlas-5 rocket lifting off from Cape Canaveral Space Force Station in Florida.

ULA is in the process of retiring the Atlas-5 rocket. It now has only eight Atlas-5 rockets left in stock, with two reserved for Leo launches and six for Boeing’s Starliner manned capsule (though there is a good chance some if not all of the Starliner launches will be switched to other payloads). Because its Vulcan rocket, intended to replace Atlas-5, is presently grounded, the company appears to be accelerating Atlas-5 launches, with this launch only about 24 days after the previous launch.

With this launch, Amazon now has 270 Leo satellites in orbit, out of the 1,616 it needs to launch by July to meet its FCC license requirement. Because it is not expected to meet that requirement, the company has asked for a time extension, which the FCC is presently considering.

As this was only the third launch by ULA in 2026, the leader board for the 2026 launch race remains unchanged:

50 SpaceX
23 China
8 Russia
6 Rocket Lab

For the third straight year SpaceX continues to lead the entire world combined in total launches, 50 to 43.

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An excellent overview of AST SpaceMobile following the New Glenn launch failure

10:51 am

Link here. For an article in a mainstream media outlet the writing is remarkable in its general accuracy and understanding of the larger context. It is also quite thorough, covering all aspects of AST SpaceMobile’s business model and how it stacks up against its main competitor, SpaceX’s Starlink.

According to the article, the company still hopes to get as many as 45 of its large new Bluebird satellites in orbit by the end of this year, though it admits the New Glenn failure now makes that goal more difficult. As the article notes:

AST SpaceMobile is continuing to manufacture, assemble and test satellites in Midland, and it will soon ship three new BlueBird satellites for launch on a yet-to-be-announced rocket. [emphasis mine]

That unnamed rocket is likely the Falcon 9, but at some point AST must find other rockets, as there is likely a limit to how many launches SpaceX can provide. Both ULA’s Vulcan rocket and Blue Origin’s New Glenn are both presently grounded because of launch failures, and other than SpaceX’s Falcon-9 and Falcon Heavy they are the only American rockets capable of launching the Bluebirds. It is also doubtful AST can buy flights on Europe’s Ariane-6 rocket. Though that rocket has had trouble garnering customers because of its high cost, its operator, the European Space Agency’s (ESA) commercial agency Arianespace, has also been very slow to ramp up operations. Even if AST was willing to pay a premium, Arianespace would likely not be able to fit extra launches into its schedule.

Overall, this situation illustrates a great opportunity. There is a strong demand for rockets from the satellite industry that the present rocket industry — excluding SpaceX — has been unable to meet.

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Starlink returns to Papua New Guinea after court ruling

9:22 am

SpaceX’s Starlink internet service will once again be available in Papua New Guinea after its court this week overturned a ban that had been imposed by a government bureaucracy.

In early 2024, the [Ombudsman] Commission blocked licensing efforts for Starlink, arguing that existing regulations may not be adequate to manage potential risks to public interest and safety.

But in her National Court ruling last week, Judge Susan Purdon-Sully strongly criticised the Ombudsman Commission for its move to halt Starlink’s license process. Finding no breach of PNG’s leadership code, nor evidence of corruption, the judge said the Ombudsman’s concerns were more administrative, meaning its directive to NICTA had been “an unconstitutional exercise of power”.

Meanwhile, the prime minister again urged Starlink to work collaboratively with state-owned Telikom PNG to “ensure a coordinated rollout that complements national infrastructure priorities”.

The article describes in detail several recent natural disasters where the lack of Starlink was a critical component in rescue and repair operations. The country also has large rural areas where Starlink is the only method for reaching the rest of the world quickly. There was thus apparently great political pressure to end this ban.

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