Tag: engineering

Saturn’s rings, warped by one of Saturn’s moons

3:09 pm

Daphne inside Saturn's rings
Click for original image.

Cool image time! Rather than post another Mars image, I decided today to dig into the archive left from the Cassini orbiter that circled Saturn from July 1, 2004 until September 15, 2017. The picture to the right, cropped to post here, was taken on September 13, 2017, only two days before the orbiter burned up in Saturn’s atmosphere. From the caption:

This image of Saturn’s outer A ring features the small moon Daphnis and the waves it raises in the edges of the Keeler Gap. The image was taken by NASA’s Cassini spacecraft on Sept. 13, 2017. It is among the last images Cassini sent back to Earth. The view was taken in visible light using the Cassini spacecraft wide-angle camera at a distance of 486,000 miles from Saturn. Image scale is 2.7 miles [per pixel].

The moon is traveling downward in this image. As it moves past the outer ring, its gravity causes that edge to ripple, producing the waves.

The scale will give you an idea of how big the rings of Saturn are. The Keeler Gap is at the outer edge of the A ring of Saturn, which is the outermost ring that is clearly visible using ordinary amateur telescopes. That edge however is more than 90,000 miles from Saturn. And grayish bands to the right of Daphne and the Keeler Gap are only the outer half of the A ring, which is by itself about 9,000 miles wide.

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First Soyuz-5 rocket arrives at Baikonur

9:50 am

According to Russia’s state-run press, the first Soyuz-5 rocket has arrived at the Baikonur spaceport in Kazakhstan, with a targeted maiden launch scheduled for December.

Soyuz-5 is designed to replace Russia’s soon-to-be retired Proton rocket, as well as the Ukrainian Zenit rocket that is no longer available because Russia invaded the Ukraine. It was first proposed in 2016, with its development proceeding in fits and starts since then. Part of the problems has been Kazakhstan, which demanded (and apparently received) a larger cut from Russia before it would allow Soyuz-5 to launch at the planned launchpad at Baikonur.

A larger factor in the delays has been a shortage of cash in Russia itself, as well the generally slow culture of its aging aerospace industry. However, in the case of Soyuz-5, it appears Russia managed to speed things up, as previous reports in 2024 suggested this first launch would be delayed until 2026.

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SpaceX signs Starlink deal with major African telecommunication company

9:28 am

In a major deal that will make Starlink available across a wide swath of Africa, SpaceX has now signed an agreement with the African telecommunication company Vodacom, which operates in 47 African countries.

Vodacom will market for SpaceX its Starlink terminals, aimed specifically in rural areas where traditional land lines are not available.

The African company [Vodacom, majority owned by Britain’s Vodafone, has been seeking to ‍close connectivity gaps across the continent through low-earth orbit satellite technology which can help provide internet even in tough terrains. Vodacom will ​integrate Starlink’s satellite technology for data relay into its ‌mobile network and will be authorized to resell equipment and services from the SpaceX-owned firm to customers in Africa, the company said in a statement.

The parent company Vodafone has also signed deals with the satellite constellations being launched by AST SpaceMobile and Amazon, so it is aggressively seeking numerous avenues for getting service to customers in those rural areas.

It appears that Vodafone will have to obtain government permission from each country, but except for South Africa the company does not see this as a serious problem. South Africa however is presently run by communist bigots who are demanding SpaceX impose racial hiring quotas on its operations before approving Starlink, and SpaceX quite rightly is telling it to go pound sand.

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India tests Gaganyaan parachutes again

9:15 am

Artist rendering of India's Gaganyaan capsule
Artist rendering of India’s Gaganyaan capsule

India’s space agency ISRO on November 3, 2025 successfully completed another drop test of the parachutes it will use on its Gaganyaan manned orbital capsule, this time testing the chutes in extreme conditions.

Explaining the November 3 test, the Isro statement said the GCM parachute system comprises 10 parachutes of four types. “The descent sequence begins with two apex cover separation parachutes that remove the protective cover of the parachute compartment, followed by two drogue parachutes that stabilize and decelerate the module. Upon release of the drogues, three pilot parachutes are deployed to extract three main parachutes, which further slow down the Crew Module to ensure a safe touchdown,” said Isro. “The system is designed with redundancy—two of the three main parachutes are sufficient to achieve a safe landing.”

Using a pyro device, the main parachutes open partially, a process known as reefing, and then open fully after a predetermined period of time, referred to as disreefing. This step-by-step process is known as reefed inflation. An important aspect of the test was the successful validation of the main parachutes under possible extreme scenarios of delay in the disreefing between the two main parachutes.

The August drop tests were from a helicopter at about 3 kilometers. The November drop tests took place from an airplane at about 2.5 kilometers.

The agency has indicated the first unmanned orbital test flight of Gaganyaan has been delayed from this year to early next, possibly as early as January. It plans to do at least three unmanned flights in 2026 before putting humans on board in early 2027.

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Canada’s Nova Scotia spaceport schedules a suborbital launch for November

9:05 am

Proposed Canadian spaceports
Proposed Canadian spaceports

The competition heats up: Maritime Launch Services, the startup that has been trying to establish Spaceport Nova Scotia since 2016, has now issued a “notice to airman” (NOTAM) outlining the range restrictions for a suborbital launch window from November 18 to November 24.

The launch is being conducted by the Netherlands rocket startup T-Minus, which signed a deal with Maritime in June 2025 to do two such launches of its Barracuda rocket before the end of this year.

The T-Minus Engineering Barracuda hypersonic test platform “is a single-stage, solid-fuel suborbital vehicle that stands approximately 4 metres tall. It features a booster with a diameter of 200 millimetres and a payload compartment measuring 1000 millimetres. Barracuda can carry payloads of up to 40 kilograms to altitudes reaching 120 kilometres.”

The only launch that has previously taken place at this spaceport was in 2023, when students from York University did a short 8-mile-high suborbital launch of a student-built rocket.

Maritime is now in a tight competition with another spaceport startup, Nordspace, which is pushing hard to initiate launches from its Newfoundland spaceport to the north. It remains unknown whether either can be made profitable.

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Goldstone antenna damaged and out of service

8:49 am

The Goldstone antenna in California that is a major component in NASA’s Deep Space Network (DSN) that it uses to communicate with interplanetary spacecraft was damaged recently and is presently out of service, with no known date for when or even if it will be repaired.

NASA’s Jet Propulsion Laboratory confirmed Nov. 10 that the 70-meter antenna at the Deep Space Network (DSN) site in Goldstone, California, has been offline since Sept. 16, with no timetable for its return to service. “On Sept. 16, NASA’s large 70-meter radio frequency antenna at its Goldstone Deep Space Communications Complex near Barstow, California, over-rotated, causing stress on the cabling and piping in the center of the structure,” JPL said in a statement to SpaceNews. “Hoses from the antenna’s fire suppression system also were damaged, resulting in flooding that was quickly mitigated.” [emphasis mine]

This statement suggests that as workers were changing the antenna’s orientation, it was moved too far in one direction, beyond the normal limits of that piping and cabling. The immediate question that the JPL statement avoids is this: What caused the antenna to “over-rotate”? Did something fail to stop it from going too far? Or was this an example of simple human error, whereby the person rotating the antenna failed to pay attention and allowed the antenna to exceed its limits?

Either way, the loss of this antenna not only poses a serious limitation in getting data back from the various unmanned probes at Mars, Jupiter, and elsewhere, it is also a problem for the upcoming Artemis-2 mission in the spring of ’26, which will rely on the Deep Space Network to communicate with the astronauts on Orion as it goes to and from the Moon. The network’s other two antennas in Spain and Australia can pick up the slack, but the system will have less redundancy, and more important, other missions will likely have to delay communications in order to give Artemis priority.

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The edge of Mars’ north polar ice cap

11:47 am

The fringe of Mars' perennial ice cap
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on September 29, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The picture shows what the science team labels as a “fringe of perennial ice.” For this picture, north is down. The white stuff on the top half of the image is that perennial ice, while the dark material at the bottom is likely a mixture of dust and debris that is still impregnated with ice.

Mars is a very icy world. Orbital data now suggests that above 30 degrees latitude there is a lot of near surface ice, though it is often mixed in with the red planet’s ample dust, blown there for eons. This location however shows us a place where that ice is on the surface, and is generally pure.

That does not mean however this will be a good location to establish a colony.
» Read more

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Kazakhstan expanding its access to multiple internet satellite constellations

9:40 am

It appears the Kazakhstan government is making multiple internet satellite constellations available to its citizens in an effort to increase competition and lower costs.

Kazakhstan first engaged with Starlink in 2023, following government frustration over the slow pace of domestic telecom expansion. The project initially connected 2,000 rural schools, and by mid-2024 nearly 1,800 had access to satellite internet.

Authorities briefly considered banning satellite internet services operated from abroad late last year, citing national security concerns, but withdrew the proposal after a public backlash.

Meanwhile, competition in the country’s nascent satellite internet market is heating up. In September 2024, Kazakhstan signed an agreement with Amazon to bring its Project Kuiper satellite network to the country, setting up a future rival to Starlink. Prime Minister Olzhas Bektenov said the move would help improve affordability and service quality. Chinese firm Spacesail Kazakhstan, a subsidiary of Spacesail International, has also registered at the Astana International Financial Centre (AIFC) with $17mn in capital, positioning itself as another potential player in the mega-constellation internet sector.

When Kazakhstan opened Starlink to all its citizens in June 2025, I noted how this deal indicated the country’s move away from Russia. Its willingness now to add Kuiper and Spacesail deals accelerates that move, in numerous ways. It not only wants its citizens to have capabilities that Russia cannot control, it wants to encourage competition to lower costs for those citizens. What a concept!

Like the Ukraine, Kazakhstan is working hard to exceed Russia in technology, in order to make it much harder for its big and very power-hungry neighbor to dominate or even invade it.

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China’s Zhuque-3 reusable rocket now ready for its first launch

9:26 am

According to a report in China’s state-run press today, the Zhuque-3 (ZQ-3] rocket, built by the pseudo-company Landspace, is now cleared for its first launch, though no launch date has yet been announced.

If everything goes according to schedule, the first ZQ 3 will take to the sky in the near future at the Jiuquan Satellite Launch Center in northwestern China’s Gobi Desert and will attempt to recover its first-stage booster, according to the Beijing-headquartered enterprise.

The rocket is now undergoing technical testing at the Jiuquan spaceport, which has a dedicated launch service tower for the ZQ 3 series.

Though the rocket is methane-fueled, its overall design is a copy of work already done by SpaceX, with a stainless steel first stage with nine engines designed to land vertically after launch and then reused. It is also appears in the lead among about a dozen Chinese pseudo-companies attempting to build reusable rockets.

The Chinese government has recently been pressuring its pseudo-companies to accelerate development. Right now, only three have done any static fire tests, and only one, Landspace, appears ready to launch. There have even been rumors that China might reorganize these fake companies into a government-run operation.

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Avio to provide solid-fueled motors to Lockheed Martin and Raytheon

9:08 am

The Italian rocket company Avio has now signed deals with both Lockheed Martin and Raytheon to provide each with solid-fueled rocket motors for U.S. missiles, built at its planned American-based factory, expected to begin operations in 2028.

Under the arrangement with Lockheed Martin, “Lockheed Martin will have preferred access to a portion of the Avio USA plant production capacity to meet future demand for its products,” according to Avio. Tim Cahill, president of Lockheed Martin Missiles and Fire Control, said the collaboration “positions us to increase production of essential capabilities and deliver them to our customers faster as global demand grows.”

Raytheon will receive similar preferred access to production capacity under a comparable agreement. The deal follows a July 2024 contract between the companies for preliminary engineering work on a tactical rocket motor for Raytheon’s Standard missile program for the U.S. Navy. Bob Butz, vice president of operations, supply chain and quality at Raytheon, said the agreement “will help establish an additional supplier of solid rocket motors within the U.S.”

In both cases, these solid-fueled motors will be used in U.S. missiles.

Since Avio regained control of its rockets and engines from Arianespace — the government-controlled commercial arm of the European Space Agency (ESA) – it has been moving very fast to obtain customers worldwide. Under ESA control, Arianespace was focused on doing business in Europe, so establishing a factory in the U.S. to garner U.S. business was never even considered. Avio is not hindered by such restrictions, and it is therefore looking for profits wherever it can find them. It has committed almost a half billion dollars to build this U.S. factory, and has begun signing up international satellite companies for its Vega-C rocket. It is also begun work on a Grasshopper-type test vehicle, with plans to incorporate this concept into Vega-C, making its first stage reusable.

The above deal also indicates that Avio is grabbing market share from the established American makers of solid fueled rockets, especially Northrop Grumman. Apparently those American companies aren’t providing manufacturing capacity required by the Pentagon.

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New company formed to run proposed North Sea offshore launch platform

8:50 am

Launch platforms proposed for North Sea
Launch platforms proposed for North Sea

The German company OHB has now formed a new subsidiary, The European Spaceport Company, to consolidate its various spaceport projects, its proposed North Sea offshore launch platform as well as the launchpads it is building at French Guiana.

According to an 11 November OHB press release, the initial goals of the new European Spaceport Company, which will be based in Bremen, are the “realisation of a European offshore spaceport and the expansion of launch capacities at the Kourou spaceport in French Guiana to include a launch complex that can be used for various rocket types.”

The home port for the offshore spaceport, dubbed the Offshore Spaceport Alliance, will be in Bremen, as shown by the map to the right. The launch facilities the company is building in French Guiana are for the German rocket startup Rocket Factory Augsburg as well as Arianespace’s Ariane-6 rocket.

The North Sea launch platform appears to be an attempt to give the three German rocket startups, Rocket Factory, Isar Aerospace, and Hyimpulse, a German-based launchpad close to Europe, rather than have to rely on the new spaceports in the United Kingdom, Norway, and Sweden that surround the Norwegian Sea to the north.

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First launch of Rocket Lab’s Neutron rocket delayed until 2026

8:34 am

Artist's rendering of the Neutron first stage deploying its second stage
Artist’s rendering of Neutron’s first stage fairings opening
to deploy the payload with the second stage engine.

Despite a concerted effort in the past year to achieve the first launch of its new reusable larger Neutron rocket before the end of 2025, Rocket Lab this week revealed that the company is now targeting a 2026 launch instead.

Sir Peter Beck, the CEO of Rocket Lab, announced the shift in plans during the third quarter earnings call with investors on Nov. 10. He said that the company’s goal is to get the rocket out to Launch Complex 3 at the Virginia Spaceport Authority’s (VSA) Mid-Atlantic Regional Spaceport (MARS) within the first quarter of 2026 “with first launch thereafter.”

“As always, this is a rocket program that’s been completed at a pace and a cost that nobody has achieved before and the financial and long-term impacts are insignificant to take a little bit more time to get it right,” Beck told investors on the call.

During the call officials also made clear that there would be no attempt to recover the first stage on that first flight, as the landing barge won’t be ready by then. It hopes a landing attempt will occur on the second flight.

Finally, officials revealed that the company has spent a bit more to develop Neutron then the originally planned cost of between $250 to $300 million. Right now it expects to spend about $360 million by the end of 2025.

This delay or the increased cost are relatively inconsequential when looked at in context. Rocket Lab had only started this project in 2021. To create a new rocket in less than five years for only about a quarter of a billion dollars is quite unprecedented.

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SpaceX launches 29 more Starlink satellites

8:47 pm

Note: My original post mistated the time of launch. Below is a corrected text:

SpaceX tonight at 10:21 pm (Eastern) successfully launched another 29 Starlink satellites, its Falcon 9 rocket lifting off from Cape Canaveral in Florida.

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

I specify the launch time because it occurred just outside the FAA’s so-called curfew banning all launches from 6 am to 10 pm local time, due to the government shutdown and a shortage of air traffic controllers to coordinate aviation and rocket launches. Though the Senate today voted to end the shutdown, that shutdown has not yet ended, and won’t until the House passes the Senate budget version and Trump signs it.

Thus, it appears Blue Origin has negotiated an exemption for its now planned launch of New Glenn on November 12, 2025 in the afternoon.

The leaders in the 2025 launch race:

147 SpaceX (a new record)
70 China
14 Rocket Lab
13 Russia

SpaceX now leads the rest of the world in successful launches, 147 to 115.

Note that I had made an error in entering my numbers earlier this week in regards to China, and have now corrected the mistake, thus revising the numbers in the last few launch reports.

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Curiosity looks downhill at past travels

9:31 am

Curiosity looks downhill
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on November 6, 2025 by the left navigation camera on the Mars rover Curiosity.

The picture looks north across Gale Crater, its distant rim about 20-30 miles away barely visible in the dusty atmosphere. In the foreground can be seen Curiosity’s recent tracks, showing how the science team had it travel back and forth several times, probably to check out several different interesting nearby ground features, as well as see how the ground changed by that travel. The rover has been traveling in an area called boxwork, a series of small intercutting ridges and hollows. Several of those ridges can be seen just beyond the tracks.

The red dotted line indicates my rough estimate as to the rover’s route uphill to get to this point, traveling up and to the left and following ridges just out of view.
» Read more

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Three launches since yesterday, with a fourth upcoming today [scrubbed]

9:19 am

The beat goes on: Since yesterday there were three launches globally, two by China and one by SpaceX, with a fourth launch scheduled by Blue Origin only a few hours hence. UPDATE: Blue Origin launch scrubbed due to weather].

First China’s solid-fueled Long March 11 rocket placed three classified military test satellites into orbit, lifting off from an ocean platform off China’s northeastern coast.

Next, China’s solid-fueled Kinetica-1 (Lijian-1) rocket placed two “technical satellites” into orbit, lifting off from the “commercial” launchpad at the Jiuquan spaceport in the country’s northwest. As is normal, China’s press provided no information about the satellites, nor where Kinetica-1’s lower stages crashed inside China. The rocket itself is supposedly commercial, but it is built by a government agency, the Chinese Academy of Sciences.

Finally, in the early morning hours today SpaceX placed 29 more Starlink satellites into orbit, its Falcon 9 rocket lifting off from the Kennedy Space Center in Florida.

The first stage (B1069) completed its 28th flight, landing on a drone ship in the Atlantic. With this launch this booster tied the space shuttle Columbia for the number of reuses by a launch vehicle. As the rankings for the most reused launch vehicles below show, SpaceX now has four boosters close to becoming the most reused rockets ever.

39 Discovery space shuttle
33 Atlantis space shuttle
31 Falcon 9 booster B1067
29 Falcon 9 booster B1071
29 Falcon 9 booster B1063
28 Falcon 9 booster B1069
28 Columbia space shuttle

Sources here and here.

The leaders in the 2025 launch race:

146 SpaceX (a new record)
69 China (a new record)
14 Rocket Lab
13 Russia

SpaceX now leads the rest of the world in successful launches, 146 to 114.

Blue Origin hopes to launch two NASA smallsat Mars orbiters later today from Cape Canaveral, using its New Glenn rocket. That launch is scheduled for 2:35 pm (Eastern). The company will once again attempt to land the first stage on a platform in the Atlantic. I have embedded the live stream below.

UPDATE: Launch scrubbed due to weather. The negotiations with the FAA (see below) now take on greater importance.

This will be the second launch of New Glenn, eleven months after its maiden flight in January. As has been the company’s culture for the past decade, it has moved very slowly from that first launch to this second. This pace however must accelerate soon, as Blue Origin has a 27-launch contract with Amazon to launch part of its Kuiper satellites. Amazon only has 154 satellites in orbit, and needs to get about 1,600 in place by July 2016 to meet the requirements of its FCC license. It also has launch contracts with ULA (46 launches, three of which have been completed) and ArianeGroup’s Ariane-6 (18 launches), but neither can on their own launch enough to do the job.

One last note: For this launch, Blue Origin is trying to arrange an exemption from the FAA’s curfew on day launches that begins tomorrow, in case some issue causes a scrub today. No word as yet on whether the FAA will agree.
» Read more

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Crazy layers inside a Martian crater

2:49 pm

Crazy layers in a Martian Crater
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on September 30, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The scientists label this image with the term “layers”, but to my eye this is kind of an understatement. The geology in the top half of this picture is more than simply layers, it is an example of that unique Martian geological feature dubbed “brain terrain”, but on steroids.

No one yet knows what causes brain terrain, though scientists think it is related to the sublimation of near surface ice. Normally the tubelike formations are much smaller, only ten to thirty feet long, not hundreds of feet as we see here.

In this case the location of these features makes their formation even more puzzling, as there is no near surface ice found here.
» Read more

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Webb tracks volcanic eruptions on Io

9:59 am

Different Webb infrared detections of Io over time
Click for original image.

Using the Webb Space Telescope, scientists have tracked two different volcanic eruptions on Io that too place from 2022 to 2023, detecting sulfur monoxide both from those eruptions as well as sulfur from the magnetic plasma torus produced as the planet travels through Jupiter’s strong magnetic field. From the paper’s abstract:

Volcanic thermal emission was detected from Loki Patera and Kanehekili Fluctus [two volcanic vents]. The main changes in the shape of the thermal emission spectra since [Webb] observed Io in November 2022 were consistent with the continued cooling of emplaced lava flows in the Kanehekili Fluctus region, and the crust that had formed on the surface of the lava lake in Loki Patera. Images of Io in the SO 1.707 μm emission band [sulfur monoxide] show a concentration above Kanehekili Fluctus and in two regions in the northern hemisphere. The emissions are sourced from SO molecules ejected from volcanic vents. We further detected, for the first time, sulfur line emissions at 1.08 and 1.13 μm. These emissions are distributed homogeneously across a band in Io’s northern hemisphere. They are mainly produced through excitation by electrons from the plasma torus, penetrating Io’s atmosphere.

The top image to the right shows the heat signature above the two volcanoes, one to the southwest and the second to the northeast. The middle image shows the sulfur monoxide emissions detected by Webb above those volcanoes from their on-going eruptions. The bottom image shows the more diffuse sulfur emissions, mostly in the northern hemisphere, believed produce by interactions with the plasma torus.

This research also relied on data obtained by both the Keck telescopes in Hawaii and the Hubble Space Telescope.

There are of course uncertainties with these results. For example, the conclusion that the more diffuse sulfur is produced by interactions with the plasma torus is not as certain. First, those sulfur emissions still appear closely linked to the volcanoes, which suggests this still could be a source.

Second, the observations also cover only two data points in time, in 2022 and 2023. To get a more precise map of the activity on Io we really need an orbiter there observing the planet on a continuous basis, something that is at this time impossible, not only because no mission is planned but because the hostile radiation environment this close to Jupiter makes the engineering quite challenging. It is this reason why Europa Clipper is not going into orbit around Europa when it arrives there in 2031. Better to orbit Jupiter and only periodically dip into that harsh radiation environment.

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U.S. budget cuts shifts Blacksky’s satellite imaging business to international customers

9:24 am

Because of budget cuts by the Trump administration, the revenues of the satellite imaging company Blacksky fell in the third quarter of 2025, but the company expects to make up that loss with new income from international customers.

The administration’s fiscal 2026 budget proposal includes a one-third reduction to the National Reconnaissance Office’s commercial imagery procurement, a move that has rippled through companies like BlackSky that rely heavily on government intelligence contracts. The cuts specifically affect the Electro-Optical Commercial Layer (EOCL) program — an NRO initiative to buy satellite imagery from commercial providers.

BlackSky reported $19.6 million in third-quarter revenue, missing analyst expectations and down from the previous quarter. Chief Executive Brian O’Toole told analysts the reduction stemmed from adjustments to the company’s EOCL contract “to reflect the potential baseline budget submitted by the administration.”

Sound terrible, eh? Not so fast.

Despite the domestic headwinds, BlackSky is seeing a sharp uptick in overseas business. The company said international sales now account for about half of total revenue, up from 40% a year ago. O’Toole said foreign demand is “outpacing our U.S. government business” and that the company expects international sales to exceed U.S. sales for the first time in 2026.

Blacksky is of course blocked from selling its high resolution reconnaissance imagery to hostile powers, but there are plenty of American allies out there who want this data.

The situation is simple. When American companies are given the freedom to produce, they will create products of value. And the sky won’t fall if the federal government can no longer be their main customer.

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Echostar sells more of its licensed spectrum to SpaceX

9:05 am

Echostar announced this week that it has sold additional spectrum that had been licensed to it by the FCC to SpaceX, getting in return about $2.6 billion in SpaceX stock.

EchoStar has entered into an amended definitive agreement with SpaceX to sell the company’s unpaired AWS-3 licenses for approximately $2.6 billion in SpaceX stock valued as of September 2025. This transaction builds on the agreement the companies entered into in September. EchoStar’s unpaired AWS-3 licenses are nationwide and are part of 3GPP Band 70n (1695-1710 MHz uplink). “This transaction with SpaceX, in addition to our previously announced spectrum transactions and commercial agreements, will strengthen EchoStar’s ability to develop new business opportunities and growth in value for our shareholders,” said Hamid Akhavan, CEO, EchoStar Capital. “The combination of AWS-3 uplink, AWS-4 and H-block spectrum from EchoStar with the rocket launch and satellite manufacturing capabilities from SpaceX accelerates the realization of powerful and economical direct-to-cell service offerings for consumers and enterprises worldwide, including our Boost Mobile customers.”

In other words, Echostar was not making any money from this spectrum on its own. By partnering with SpaceX it can do so, because SpaceX has the satellites and rockets capable of making it happen, and a cost that is affordable.

Nor should the companies have much problem getting FCC approval. Echostar had previously been accused of under-utilizing its licensed spectrum. This deal with SpaceX helps solve that issue.

In other Starlink news, SpaceX has begun rolling out Starlink service in India, while also striking a deal with British Airlines to use Starlink on its airplanes.

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One launch today by SpaceX, while ULA scrubs for the second time in two days

7:46 pm

SpaceX today successfully launched another 28 Starlink satellites, its Falcon 9 rocket lifting off from Vandenberg Space Force Base in California.

The first stage completed its 8th flight, landing on a drone ship in the Atlantic.

ULA for the second day in a row was forced to scrub a launch of a Viasat communications satellite due to “a reoccurrence of the issue with the Atlas V booster liquid oxygen tank vent valve.” No new launch data has as yet been announced.

The contrast between these two rocket companies here is truly striking. In the past two days SpaceX’s reusable Falcon 9 has launched twice, like clockwork, while ULA can’t get off the ground because of a valve issue, the kind of niggling problem that routinely scrubs its launches. It is thus rare that ULA launches on time, on schedule, as planned.

SpaceX’s launch however sets a new record for successfully launches in a single year by the entire world, 257, breaking the record set last year. These numbers are two to five times what the global launch industry managed annually for most of the space age, and signal the renaissance in rocketry brought on by Elon Musk and SpaceX. Nor I think have we reached peak numbers. Not even close.

The leaders in the 2025 launch race:

145 SpaceX (a new record)
67 China
14 Rocket Lab
13 Russia

SpaceX now leads the rest of the world in successful launches, 145 to 112.

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SpaceX and Arianespace make launch predictions for ’25 and ’26

9:40 am

In separate announcements this week, officials from Arianespace and SpaceX revealed their launch plans for the rest of this year and next.

First, Arianespace officials revealed yesterday that it is hoping to do six to eight Ariane-6 launches in 2026.

During a post-flight conference following the launch of Sentinel-1D, Arianespace CEO David Cavaillès stated that while the company preferred to wait until next year to reveal details about its 2026 launch manifest, it was aiming to double its launch cadence. He added that a cadence of between six and eight next year “will be great.”

If the company does manage eight Ariane 6 flights in 2026, it will already be close to reaching the stated maximum launch cadence of between nine and ten flights per year. When asked if this cadence could be increased, Cavaillès explained that the decision would be driven by customer demand.

Since customer demand for Ariane-6 has been quite low, because of its high cost, don’t expect this launch rate to rise much higher. Arianespace’s only big contract is 18 launches for Amazon’s Kuiper constellation. Once that is completed it is not clear where much future business will be coming from, even with some bureaucrats lobbying the European Space Agency to require its members to use it. There are too many cheaper options available now, with many more coming on line, both in America and Europe.

Next, a SpaceX official noted at a conference this week that the company hopes to complete another 25 to 30 Falcon 9 launches before the end of the year.

“We’re aiming for around 170 — between 165 and 170 — which means 25 to 30 more launches to go,” Kiko Dontchev, the company’s vice president of launch, said during a Wednesday session at the Space Economy Summit 2025.

…All together, “we’ll get to 2,400, 2,200 [metric tons launched] or something like that, which is absurd in the grand scheme of where things have been,” he added. Historically, that is close to the global record for metric tons launched to space by all companies and nations — about 2,500 metric tons in 2024, according to Jonathan’s Space Report, compiled by astronomer Jonathan McDowell.

In other words, SpaceX hopes its Falcon 9 rocket will this year alone place in orbit almost the same tonnage launched previously by everyone in the three-quarters of a century since Sputnik.

Cavaillès’ forecast means the company is likely to get very close to its prediction for launches at the beginning of the year, 180, that also included its Superheavy/Starship test launches. Quite an amazing achievement.

And as Al Jolson once said, “You ain’t seen nothin’ yet!”

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China’s Tianwen-1 Mars orbiter snaps fuzzy picture of interstellar comet 3I/Atlas

9:22 am

Comet 3I/Atlas, as seen by China's Tianwen-1 Mars orbiter
Click for original image.

Chinese engineers have successfully taken a picture of interstellar comet 3I/Atlas as it passed its closest to point to Mars, about 19 million miles away, using their Tianwen-1 Mars orbiter.

The Tianwen-1 team began preparing for the observation in early September. After repeated simulations and feasibility assessments, they determined to use the high-resolution camera on the orbiter and designed optimal imaging strategies, ultimately achieving successful observation.

That image is to the right. Based on the fuzziness of the surrounding stars, the camera was not able to get a perfect focus during the observations. The main take-away is that the images once again prove 3I/Atlas is a comet not unlike those from our own solar system.

The mainstream press and some untrustworthy press-seeking scientists have tried to make a big deal about any interesting data point that has been observed from Comet 3I/Atlas, trying to claim it is some weird alien object of momentous importance. It is not. It is like every other solar system comet, though like those comets it is unique in its own way.

The big discovery here is how similar it is from solar system comets, suggesting that the processes that created our solar system are somewhat common throughout the galaxy.

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Starlab picks Leidos to assemble, integrate, and test its space station prior to launch

8:07 am

Starlab design in 2025
The Starlab design in 2025. Click
for original image.

The consortium building the large single-module Starlab space station (intended to launch on Starship) yesterday picked the American company Leidos to assemble, integrate, and test its station prior to launch.

Leidos will assemble and integrate the components of Starlab’s space station into a complete system, supporting compatibility and verifying performance through environmental, functional and performance testing in Alabama. Additional responsibilities under the agreement include safety and mission assurance and systems engineering.

Since the consortium’s lead company, Voyager Space, raised nearly $400 million in its first public stock offering in June, Starlab has been signing up a lot of new partners, many of which like Leidos are aimed at building the station itself. First it signed the company Journey to design the station’s interior. Then it signed the Louisiana space hardware company Vivace to build Starlab’s primary structure. Next, a Belgium software company specializing in payload integration joined the consortium. Finally Voyager last week acquired the satellite electric propulsion company Exoterra. Initially I thought this last acquisition was aimed at increasing Voyager’s ability to win military contracts, but it also could provide the station itself with a system for orientation and propulsion.

All in all, this activity continues to strengthen Starlab’s position in the competition to win major contracts and customers leading to the construction of the station itself. Below is my updated rankings of the four commercial stations under development:
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Two American launches today, setting several new launch records

8:58 pm

The beat goes on! Three different American companies attempted launches today, with two successfully getting off the ground while the third was forced to scrub due to an unspecified technical issue.

First Rocket Lab successfully launched another radar satellite for the Japanese company Q-Shu Pioneers (iQPS), its Electron rocket lifted off from one of Rocket Labs’ two New Zealand launchpads. This was the fifth launch out of a total eleven-launch contract that Rocket Lab has from Q-Shu. The launch also tied Rocket Lab’s record for the most successful orbital launches in a single year, 14, set in 2024.

Next, SpaceX launched another 29 Starlink satellites into orbit, its Falcon 9 rocket lifting off from Cape Canaveral in Florida. The first stage completed its fifth flight, landing on a drone ship in the Atlantic. The launch once again set a new annual launch record for SpaceX.

Only about two hours later, ULA attempted to launch a Viasat communications satellite using its Atlas-5 rocket, also lifting off from Cape Canaveral. At T-minus 4 minutes however there was an unplanned hold. After trouble-shooting the problem for almost an hour, they scrubbed the launch with only a few minutes left in the launch window. They will try again tomorrow.

With the two successful launches, the world’s global launch industry tied the record that was set last year for the most successful orbital launches in a single year, 256. That record will certainly be passed in the next few days.

What is more significant is that until 2020, the industry struggled to reach 100 launches per year. Since then the numbers have skyrocketed, led mostly by SpaceX’s overwhelming success.

The leaders in the 2025 launch race:

144 SpaceX (a new record)
67 China
14 Rocket Lab (tying its previous record)
13 Russia

SpaceX now leads the rest of the world in successful launches, 144 to 112.

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This typical cliff on Mars just happens to match the walls of the Grand Canyon

1:27 pm

A typical Martian cliff, comparable to the Grand Canyon
Click for original image.

Cool image time! The picture to the right, cropped, reduced, and sharpened to post here, was taken on August 23, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The label the science team gave this image, “remnant fan”, suggests the focus of research here is the fingerlike ridges on the floor of the canyon, emanating out from the cliff. These appear to be the remains of an ancient mass-wasting event, similar to an avalanche but different in that instead of it being a pile of surface material falling down the cliff, the cliff itself breaks free and slumps downward. In this case the event was so long ago that most of the slumped material has eroded away, leaving only those ridges, likely resistant to erosion because of the impact of the material from above.

If you look at the top of cliff, you can see evidence that another mass wasting event is pending. Note how the plateau floor near the cliff has dropped about 100 feet. This drop suggests that this part of the cliff has started to slump and break away from the plateau.
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Arianespace launches European radar satellite

8:32 am

The commercial arm of the European Space Agency, Arianespace, yesterday successfully launched Europe’s Sentinel-1D radar satellite, its Ariane-6 rocket lifting off from France’s French Guiana spaceport.

As noted here,

The 2,184-kilogram Sentinel-1D satellite is a twin of Sentinel-1C, which was launched aboard a Vega C rocket in December 2024. Given that the Ariane 62 can deliver more than 10 tonnes to low Earth orbit, launching the 2.3-tonne Sentinel-1D on a dedicated flight appears excessive, particularly as its twin was launched on a Vega C rocket.

Officials claimed the reason was a need to get the satellite in orbit because one in orbit had failed, and because of the delay in Vega-C launches because of a launch failure. Since Vega-C however has fixed the nozzle issue that caused the failure and resumed launches, this argument is unconvincing. I suspect the real reason is that Arianespace has had problems getting customers for Ariane-6. Other than Amazon, which purchased 18 launches, European companies and nations have been generally reluctant to use Ariane-6 because it is too expensive (it is expendable).

This was only the fifth launch by Europe in 2025, so the leader board for the 2025 launch race remains unchanged:

143 SpaceX
67 China
13 Russia
13 Rocket Lab

SpaceX still leads the rest of the world in successful launches, 143 to 111.

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China delays return of Shenzhou 20 crew due to possible capsule damage from “space debris”

11:02 pm

Shenzhou-16 after undocking in 2023
Shenzhou-16 after undocking in 2023. Click for source.

In a very brief statement today by China’s state-run press, it announced the planned return on November 6, 2025 of the Shenzhou-20 crew that has just completed their six month mission on the Tiangong-3 space station has been delayed indefinitely due to “a suspected impact from tiny space debris” on their Shenzhou capsule.

According to the statement “impact analysis and risk assessment are under way.”

A new crew arrived at the station on October 31, 2025 on the Shenzhou 21-capsule, and after a few days transition were to take over operations while the crew of Shenzhou-20 returned home.

We do not know the extent of the damage or even when it was first detected. Depending on the damage, China has several options. First, after review it could decide to return the crew on Shenzhou-20.

Second, it could decide that a fresh replacement capsule needs to be launched. If so, the old crew’s mission might be extended for a few months, as happened to a Soyuz crew on ISS in 2023 because of a leaking coolant system. First Russia launched a new empty capsule to ISS, and then the damaged capsule returned unoccupied. That way a lifeboat was always docked for that stranded crew.

It might also be possible to patch the damage, depending on its size and location.

In every case, the situation should not be critical. I am assuming the station is well stocked at this time, so that a crew of six instead of three could manage there for about three months. I am also assuming China has more Shenzhou capsules in the pipeline and can prepare a new one relatively quickly. Finally, I am also assuming China’s Shenzhou capsules can dock autonomously, as do their unmanned Tianzhou freighters.

And then again, if any of my assumptions are wrong, this situation could become more serious.

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Sunspot update: Solar activity continues to decline as predicted

3:46 pm

Another month has passed, and so it is time for my monthly update on the never-ending sunspot cycle on the Sun. using NOAA’s own monthly update of its graph of sunspot activity and annotating it with extra information to illustrate the larger scientific context.

The green dot on the graph below indicates the level of sunspot activity on the Sun’s Earth-facing hemisphere during the month of October. Not only did the number of sunspots decline from the count in the previous month, as predicted in April 2025 by NOAA’s panel of solar scientists (as indicated by the purple/magenta line), it dropped below their prediction.
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Someone is apparently considering putting a helicopter on Starship when it goes to Mars

2:53 pm

Potential Starship helicopter location

In my regular trolling through the images sent down from Mars Reconnaissance Orbiter (MRO), I sometimes come across things that imply truly exciting future missions. That happened when in 2019 I found a bunch of photos each labeled as a “candidate landing site for SpaceX Starship”. Without fanfare SpaceX had begun researching locations for where it intended to land Starship on Mars, in the northern lowland plains, research that it later solidified considerably.

Similarly, I have found MRO images in 2022 suggesting scientists were thinking of running a helicopter mission inside Valles Marineris, the largest canyon in the solar system. Another image in 2024 suggested that a helicopter mission might go to another region in Mars’s southern cratered highlands.

The image to the right, cropped, reduced, and sharpened to post here, is another new example of a potential Martian helicopter mission. It was taken on August 19, 2025 and is labeled provocatively “Characterize Possible Rotorcraft Landing Site.” Unlike the previous two proposed helicopter locations, however — which appeared to be aimed at uncertain NASA funding — this image’s location suggests it is far more certain, and might launch far sooner than you can imagine.
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