Tag: spaceflight

Perseverance moves on

10:30 am

Perseverance panorama, November 16, 2025
Click for high resolution version. For original images, go here, here, and here.

Overview map
Click for interactive map.

Cool image time! It appears that during the government shutdown the science team for the Perseverance rover on Mars made the decision to leave an area they had been exploring for the past two months, driving the rover aggressively to the southwest and in a direction that had been unplanned.

The overview map to the right illustrates that move, with the blue dot marking the rover’s present position. The white dotted line indicates its actual travels, while the red dotted line shows the planned route. According to that planned route, the plan had been to move south and back up onto the top of the rim of Jezero Crater. For reasons that the science team has not explained, they decided instead to head to the southwest, away from the crater rim.

The panorama above was created by stitching together three images released today by Perseverance’s left navigation camera (see here, here, and here). The yellow lines on the overview map indicate my guess as to the area covered by this panorama. Note Perseverance’s tracks on the left. I think this panorama shows us the area the rover traveled in this recent move.

Note also the barrenness of the terrain. This is truly an alien world. It has an atmosphere that produces a very faint wind, that over eons can erode things. This is why this exterior wall of the rim of Jezero crater is so relatively smooth. Crater rims are usually places of jagged broken rock, thrown out by the impact. That very thin Martian atmosphere over time has smoothed that terrain.

This landscape also has no life. Except for some spots in the polar regions, it is literally impossible to find any place on Earth so devoid of life.

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Thailand rejects Starlink

9:18 am

Because of local laws forbidding the operation of any foreign-owned telecommunications company in Thailand, its government has rejected any sale of Starlink terminals inside the country.

The Digital Economy and Society Ministry has rejected a proposal from SpaceX to provide Starlink low-orbit satellite internet services in Thailand through a 100% foreign-owned company, citing national security concerns and legal restrictions. “If the company wants to set up a wholly owned firm, there will be no opportunity … to cooperate, as telecom ownership is directly linked to our digital security system,” minister Chaichanok Chidchob said on Friday.

This is the same problem that SpaceX has faced in a number of other third world countries, such as India and South Africa. In South Africa the government demanded SpaceX give up some or all of its ownership rights as well as impose a variety of racial or employment quotas that SpaceX considers unacceptable. Thus, no Starlink. In the case of India, the government insisted that its own telecom companies get a cut. SpaceX then managed to negotiate deals with each, where those companies market the Starlink terminals for SpaceX.

Apparently, no such deal has yet been worked out in Thailand.

Expect a deal eventually, however. The article notes that Thailand’s neighbor Vietnam has a Starlink deal allowing its citizens to sign up without restrictions. That agreement is going to put great pressure on Thailand

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Europe finalizes transfer of Vega-C rocket back to its builder, Italian company Avio

9:05 am

European Space Agency logo

In an agreement signed on November 14, 2025, the European Space Agency (ESA) completed the transfer of the Vega-C rocket, formerly controlled by the government-owned company Arianespace, back to the Italian company Avio.

Following decisions taken by the ESA Council in 2023, the revision of the Launchers Exploitation Declaration (LED) was finalized on 10 July 2025 and the Guiana Space Centre Agreement was signed on 23 October 2025. The LEAs signed today translate the LED mandate to ESA into concrete detailed implementation arrangements between ESA and the launch operators.

The two arrangements signed today – one with Arianespace and ArianeGroup for Ariane 6, and one with Avio for Vega-C – define the roles and responsibilities of each operator and ESA’s role in monitoring its implementation. They also establish the framework for cooperation between the parties to ensure Europe’s continued autonomous access to space through the exploitation of ESA-developed launchers from Europe’s Spaceport in French Guiana.

The quote above also details other changes. The Ariane-6 rocket is now controlled by a partnership of Arianespace and ArianeGroup, with the bulk of control by the latter, a private company that owns the rocket. Though Arianespace retains some management rights, its part in the rocket’s future has been reduced significantly.

Meanwhile, ownership and control of the French Guiana spaceport has now been transferred entirely from Arianespace and back to France’s space agency CNES. CNES has been running things more or less for the past year or so, but this makes the change official.

All in all, these agreements continue ESA’s shift in the past two years away from the government-run model, centralized under Arianespace control, to the capitalism model, where the government is merely a customer, buying what it needs from independent, competing, privately-owned companies. While these agreements highlight Avio and ArianeGroup, Europe also has a flock of new rocket startups (Isar, Rocket Factory Augsburg, PLD) on verge of their first launches.

If Europe maintains its commitment to this shift, it should see some exciting developments in space in the coming years.

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China begins hurried preparations to launch rescue Shenzhou capsule to Tiangong-3

6:01 am

The Tiangong-3 station, as presently configured
The Tiangong-3 station, as presently configured

According to China’s state run press, it has begun emergency procedures to quickly launch the Shenzhou-22 capsule — originally scheduled to carry the next crew to its Tiangong-3 station in April 2026 — in order to provide the present station crew a lifeboat and a return capsule.

The China Manned Space Agency has started preparations for the launch of an unmanned spacecraft to carry a full cargo load, including provisions for astronauts and equipment for the Tiangong space station, according to a senior engineer. Zhou Yaqiang, who works with the agency’s general technical bureau, told China Central Television on Saturday that all systems involved in the upcoming Shenzhou-22 cargo mission “are busy getting ready for it, testing the rocket and the spaceship and preparing the payloads”.

The Shenzhou-22 spacecraft will be launched in due course to dock with the Tiangong space station, the agency said.

The report provided no details on when this launch would occur, though another Chinese report said getting the rocket (a Long March 2F) and capsule ready in the next 10 to 20 days would be “difficult.”

At the moment, the three astronauts on Tiangong-3 have no lifeboat. Should anything go wrong at the station before that launch they will have no way to get back to Earth, unless they use the damaged Shenzhou-21 capsule still docked to the station. That capsule has cracks in a window, caused by what the Chinese think was an impact from “space debris.” The Chinese have already determined it is not safe for human travel. Thus, using it in an emergency would be a desperate act.

Since the first space station, Salyut-1, was launched and occupied in 1971, this is the first time that a crew has been in space with absolutely no way to get home. The press last year repeatedly claimed the Starliner crew was “stranded” on ISS, but that wasn’t so. They could have always come home on their Starliner craft, as was proven when it returned unmanned with no problems. NASA had simply made the decision to be cautious and wait for the launch of next Dragon to bring them home instead.

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FAA lifts airline and rocket launch restrictions

11:34 pm

The Federal Aviation Administration (FAA) earlier today announced it is lifting the restrictions on airline traffic as well as rocket launch limitations imposed due to the government shutdown.

The change will go into effect 6 am (local time) on November 17, 2025.

The restrictions had limited flights out of 40 major airports across the country. Normal flight schedules should resume tomorrow. For rockets, this means launches can once again take place at any time of the day. The restrictions had placed a curfew on any launches from 6 am to 10 pm local time.

The press release included this intriguing tidbit:

The FAA is aware of reports of non-compliance by carriers over the course of the emergency order. The agency is reviewing and assessing enforcement options.

If the FAA does anything to penalize any airline or rocket company it would be a very typical example of government pettiness. But then, I have learned never to expect anything better from bureaucracies.

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SpaceX launches NASA ocean radar satellite

10:56 pm

SpaceX tonight successfully launched Sentinal-6B, a NASA radar satellite designed to measure the global sea level, its Falcon 9 rocket lifting off from Vandenberg Space Force Base.

The first stage completed its 3rd flight, landing back at Vandenberg.

The leaders in the 2025 launch race:

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

SpaceX now leads the rest of the world in successful launches, 150 to 117.

Note that until SpaceX began to up its launch rate significantly in 2022, the entire global rocket industry — run entirely by governments — never completed more than 135 successful launches in a single year, and usually failed to make 100 launches. SpaceX is now proving that those global numbers over more than a half century were indicative of the failure of those governments. Those governments controlled everything, and so they prevented innovation, competition, and new ideas.

The transition to capitalism and freedom since 2010 has finally begun to open up space for everyone.

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Europe’s Trace Gas Orbiter circling Mars gets images of interstellar Comet 3I/Atlas

4:47 pm

Interstellar Comet 3I/Atlas
Click for movie.

Using Europe’s Trace Gas Orbiter (TGO) that is in orbit around Mars, engineers have obtained images of the interstellar Comet 3I/Atlas.

The image to the right is a screen capture of the last image in a movie they created from all the pictures. I have added the arrow to indicate the comet, which underlines the fact that these images really don’t tell us that much about the comet itself. It is hardly more than a few pixels across, with no real detail resolved. However, the data has still been found useful.

Until September, figuring out the location and trajectory of 3I/ATLAS relied on Earth-based telescopes. Then between 1 and 7 October, ESA’s ExoMars TGO turned its eyes towards the interstellar comet from its orbit around Mars. The comet passed relatively close to Mars, approaching to about 29 million km during its closest phase on 3 October.

The Mars probe got about ten times closer to 3I/ATLAS than telescopes on Earth and it observed the comet from a new viewing angle. The triangulation of its data with data from Earth helped to make the comet’s predicted path much more accurate.

While the scientists initially anticipated a modest improvement, the result was an impressive ten-fold leap in accuracy, reducing the uncertainty of the object’s location.

All the data continues to confirm that 3I/Atlas is nothing more than comet, though like all comets unique in its own way. This refined location data will also improve the on-going observations of Europe’s Jupiter probe Juice, presently on its way to Jupiter and in the best position to see 3I/Atlas.

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Two more SpaceX launches

1:15 pm

SpaceX yesterday completed two launches, placing a total of 58 Starlink satellites into orbit.

First, a Falcon 9 lifted off from the Kennedy Space Center in Florida, carrying 29 Starlink satellites. The first stage completed its 8th flight, landing on a drone ship in the Atlantic.

Four hours later, a second Falcon 9 lifted off from Cape Canaveral, carrying another 29 Starlink satellites. Its first stage completed its 24th flight, also landing on a drone ship in the Atlantic.

The leaders in the 2025 launch race:

149 SpaceX
70 China
14 Rocket Lab
13 Russia

SpaceX now leads the rest of the world in successful launches, 149 to 117.

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The orbital propulsion module for India’s Chandrayaan-3 lunar lander drifts back into lunar orbit

3:48 pm

When India’s Chandrayaan-3 spacecraft arrived in lunar orbit in August 2023, it separated into three units, the lander, a lunar orbiter, and a propulsion unit used to get everything to the Moon.

While the Vikram lander successfully touched down several hundred miles from the Moon’s south pole and the Chandrayaan-3 orbiter continues to make observations of the Moon, in October 2023 engineers had the propulsion module do a burn that sent it out of lunar orbit and into an Earth orbit that was close to one of the Lagrange points where the gravity of the Earth and Moon are balanced.

Now, three years later, that module has drifted back into lunar orbit, where it has since done two close fly-bys of the surface.

This intricate orbital dance culminated when the module once again entered the Moon’s SOI [sphere of influence] on November 4, 2025, an event marking the transition where lunar gravity dominates its motion.

The first recorded lunar flyby occurred on November 6, 2025, at a distance of 3,740 km from the lunar surface, though it was outside the Indian Deep Space Network’s (IDSN) visibility range. A second, closely monitored flyby took place on November 11, 2025, bringing the module within 4,537 km of the Moon and well within observation capabilities.

These events noticeably altered the satellite’s orbital parameters, expanding its orbit size from 100,000 x 300,000 km to a massive 409,000 x 727,000 km and shifting its inclination from 34° to 22°.

It is not clear what happens next. Having this module in lunar orbit could be an issue for present and later orbiters, as no orbit around the Moon can ever be stable. At some point India’s space agency ISRO needs to properly dispose of this unit, either by sending into the Moon or out of the Moon-Earth system entirely. I am of course assuming it has the fuel to do so.

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Bezos releases new video of the New Glenn first stage landing yesterday

3:35 pm

Jeff Bezos, founder of Blue Origin, today released on X new footage showing from a distance the full landing sequence of New Glenn’s first stage on a barge in the Atlantic.

I have embedded it below. It is quite spectacular, and suggests the Blue Origin team can match SpaceX’s team in controlling a landing spacecraft. The stage comes down several hundred feet to the side of the barge, hovers, and then slides sideways to touch down exactly on target. As Bezos notes:

We nominally target a few hundred feet away from Jacklyn to avoid a severe impact if engines fail to start or start slowly. We’ll incrementally reduce that conservatism over time.

This is not unlike the landing maneuver performed by Starship prior to capture by the tower chopsticks. If Blue Origin can do it also, it means it has capabilities it has been hiding for the past decade due to its slow and timid testing/launching pace.
» Read more

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Comet C/2025 K1 — NOT interstellar 3I/Atlas — breaks up as it passes closest to the Sun

12:10 pm

The broken apart nucleus of Comet 3I/Atlas
Click for original image.

CORRECTION: I originally posted this story thinking the comet imaged was the interstellar Comet 3I/Atlas. It is not. It is a different one. I have changed to post below to correct my error.

——————
Sometime on November 11, 2025, the nucleus of interstellar C/2025 K1 broke into three pieces as it passed through its closest and hottest point to the Sun.

The image to the right, cropped and reduced to post here, comes from images of the break-up taken by the Virtual Telescope project, which gathers data from many small telescopes remotely.

From the first link, translated by Google from the Italian:

Its trajectory led it, in early October, to pass through a point of minimum distance from the Sun (perihelion) quite close to our star, about 0.33 astronomical units, just outside the orbit of Mercury. Because of this “short” distance from the Sun, it experienced high solar irradiation, which caused a significant increase in the temperature of the surface and internal layers of the nucleus.

These are precisely the conditions under which a “breakup” event is expected: depending on the internal properties of the nucleus—namely, its porosity, its state of cohesion, its composition, and the percentage of ice—it is possible that the increase in temperature could cause significant “outgassing,” a sudden and violent outflow of gaseous and dusty material, and the consequent fragmentation of the nucleus, sometimes into a few pieces of roughly similar size, sometimes into a cloud of fragments and debris that spread along the trajectory of the original comet.

…”From an initial quick analysis of the images, we can confirm that there are certainly two fairly similar pieces, whose brightness maxima are separated by approximately 2,000 km (distance projected on the star field); “Furthermore, we can intuit the presence of a third, smaller and fainter fragment to the left of the pair,” observes Mazzotta Epifani.

It will be interesting to see if the same thing happens to interstellar Comet 3I/Atlas as it makes its own pass close to the Sun.

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China’s Shenzhou-20 crew on Tiangong-3 returns on Shenzhou-21 capsule

11:27 am

The Tiangong-3 station, as presently configured
The Tiangong-3 station, as presently configured

After about a week of analysis, China today announced that the Shenzhou-20 capsule was too badly damaged to bring its crew back from its Tiangong-3 space station.

In making that announcement China finally revealed some details about the damage.

Tiny cracks have been found in the return capsule’s viewport window, which are most probably caused by external impact from space debris, according to the [China Manned Space Agency (CMSA).]

To get that crew home, which had already spent almost seven months in orbit, China had them board the Shenzhou-21 capsule that had only launched two weeks earlier on October 31, 2025 and use it to return to Earth today.

This leaves the present three astronauts on Tiangong-3 without any way to get back to Earth should something go wrong with the station.

China apparently had limited options. It doesn’t have enough docking ports on Tiangong-3 to dock three Shenzhou capsules to it, so one capsule had to undock and leave the station to make room for a replacement capsule.

Undocking Shenzhou-21 however is puzzling. Why didn’t China instead undock the damaged Shenzhou-20 capsule and de-orbit it? Had it done so, the six astronauts would have had only one lifeboat for three, but the docking port would have been opened for a new rescue capsule. There have been indications that China is preparing the next Shenzhou-22 capsule and a Long March 2F rocket for launch, though China has not provided any information about when that launch will occur.

With Shenzhou-21 gone, the three remaining Tiangong-3 astronauts are truly stranded in space, with no way home.

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