Tag: spaceflight

Russia launches classified weather satellite

9:47 am

Russia today successfully placed a long delayed first satellite in a new series of weather radar satellites, its Soyuz-2 rocket lifting off from the Plesetsk spaceport in northeast Russia.

The satellite, Obzor-R1, was originally proposed in 2015 for launch in 2019. It was placed in a polar orbit, so the rocket’s lower stages all landed in the oceans north of Russia.

The leaders in the 2025 launch race:

168 SpaceX
86 China
18 Rocket Lab
16 Russia

SpaceX still leads the rest of the world in successful launches, 168 to 145.

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Layers in the biggest canyon in the solar system

12:07 pm

Overview map

Layers in the solar system's biggest canyon
Click for original image.

Cool image time! The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on October 24, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The white dot on the overview map above marks the location, on the lower slopes of the south rim of Valles Marineris, the largest canyon on Mars and by far the largest so far discovered in the solar system. From the rim to the floor the elevation drop here is about 23,000 feet, with the layers shown in the picture to be about 5,000 feet above the canyon floor.

Those layers cover about 500 feet of that elevation drop. Each layer suggests a past event, possibly volcanic eruptions. The curved headwall near the upper left also suggests that some layers were avalanches or mass wasting events flowing downhill to the northeast, one on top of another.

As always, the scale of Valles Marineris is hard to imagine. The rim is 20 miles to the south, but the canyon’s opposite rim is from 140 to 300 miles to the north. You could fit two to five Grand Canyons in this part of Valles Marineris and each would look small in comparison.

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Next Starship/Superheavy launch in March?

9:17 am

According to this detailed update on SpaceX’s work at Boca Chica by NASASpaceflight.com, we should expect the next orbital test flight of Starship/Superheavy some time in March 2026.

As far as the launch date for this first flight of Block 3, sources point to March as the most likely viable timeframe. This launch will mark numerous firsts, from the vehicle, its Raptor 3 engines, and the first use of the upgraded Pad 2 architecture that will be mirrored at Pad 1, along with 39A and SLC-37 on the East Coast.

Block 3 refers to a major upgrade in Starship, which will fly prototype #39. Meanwhile, work getting Superheavy prototype #19 prepped has moved fast, following the loss of #18 from an explosion during ground fueling tests.

Recent observations show significant milestones: after welding the liquid oxygen (LOX) tank to the engine section (including pre-installed landing tanks and transfer tube), teams added methane tank barrels and the forward dome with its integrated hot staging ring. By December 20, all barrel sections were delivered and stacked, achieving this in just 25 days from November 25 — half the 42 days required for Booster 17, the final Version 1 booster.

The report also said that a February launch is a possibility, but is less likely.

Meanwhile, news outlets are reporting that the Trump administration is considering giving SpaceX about 775 acres in a wildlife preserve adjacent to Starbase in exchange for 692 acres SpaceX owns elsewhere. If confirmed, this deal would be similar to the land swap Texas had wished to do with SpaceX the company scrapped last year.

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Italian rocket company Avio wins two launch contracts valued at $117 million total

9:07 am

Last week the Italian rocket company Avio announced that it has signed launch contracts for its Vega-C rocket with two different unnamed satellite customers, the value of the contracts equaling $117 million total.

The satellites to be launched will be used for Earth observation, environmental monitoring and resource management purposes for civil and scientific applications, providing high-resolution imagery as well as best-in-class geolocation accuracy. The passengers will feature a mass ranging from more than 400 to more than 1,000 kilograms and will be deployed into a ~500 km Sun-synchronous orbit.

These contracts totally secure over EUR 100 million for launch services to be scheduled between 2028 and 2031.

Though the customers remain unnamed, the Avio release indicated that one was from Europe and the other was non-European. That latter contract deal could be linked to Avio’s announcement at about the same time that it is spending $500 million to build a rocket facility in Virginia. If the non-European customer was American and its satellites were for the Pentagon, having a U.S.-based facility made that contract award far more likely.

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Recovering Maven appears increasingly dim

8:57 am

According to a NASA update late yesterday, engineers have still not been able to recover the Maven Mars orbiter since all communications ceased suddenly on December 6, and are now facing a month-long period when the Sun will block all communications with Mars entirely.

The MAVEN team also continues to analyze tracking data fragments recovered from a Dec. 6 radio science campaign. This information is being used to create a timeline of possible events and identify likely root cause of the issue. As part of that effort, on Dec. 16 and 20, NASA’s Curiosity team used the rover’s Mastcam instrument in an attempt to image MAVEN’s reference orbit, but MAVEN was not detected. Additional analysis will continue, but planned monitoring will be affected by the upcoming solar conjunction.

Mars solar conjunction – a period when Mars and Earth are on opposite sides of the Sun – begins Monday, Dec. 29, and NASA will not have contact with any Mars missions until Friday, Jan. 16. Once the solar conjunction window is over, NASA plans to resume its efforts to reestablish communications with MAVEN.

That December 6th tracking data had suggested the spacecraft was tumbling. Though NASA management has not yet given up hope, the longer the spacecraft remains out of touch and in an uncontrolled state, the less chance there will be for it to survive. Batteries will drain, equipment will freeze, and the spacecraft will die. Right now, that appears to be its fate.

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India launches AST SpaceMobile’s sixth Bluebird satellite

8:39 pm

India’s space agency ISRO today (December 24 in India) successfully launched AST SpaceMobile’s sixth Bluebird satellite into orbit, its Bahubali rocket (LVM3) lifting off from its Sriharikota spaceport on India’s eastern coast.

This Bluebird is an upgrade from the first five satellites, providing ten times the bandwidth. The constellation acts as satellite cell towers for smart phones. These Bluebird satellites have been the largest in size ever launched, and this satellite will break their previous records. It is also the heaviest satellite India’s Bahubali rocket has ever put in orbit, on its sixth launch.

For India, this is its fourth launch in 2025. The leaders in the 2025 launch race:

168 SpaceX
86 China
18 Rocket Lab
15 Russia

SpaceX still leads the rest of the world in successful launches, 168 to 144.

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Hubble images gigantic protoplanetary disk

10:20 am

Largest known protoplanetary disk
Click for original image.

Cool image time! The picture to the right, rotated, cropped, and reduced to post here, was taken by the Hubble Space Telescope on February 8, 2025, and shows what scientists believe is the largest protoplanetary disk so far measured.

Located roughly 1,000 light-years from Earth, IRAS 23077+6707, nicknamed “Dracula’s Chivito,” spans nearly 400 billion miles — 40 times the diameter of our solar system to the outer edge of the Kuiper Belt of cometary bodies. The disk obscures the young star within it, which scientists believe may be either a hot, massive star, or a pair of stars. And the enormous disk is not only the largest known planet-forming disk; it’s also shaping up to be one of the most unusual.

…The impressive height of these features wasn’t the only thing that captured the attention of scientists. The new images revealed that vertically imposing filament-like features appear on just one side of the disk, while the other side appears to have a sharp edge and no visible filaments. This peculiar, lopsided structure suggests that dynamic processes, like the recent infall of dust and gas, or interactions with its surroundings, are shaping the disk.

You can read the peer-reviewed paper here [pdf]. The structure of this system has left them with more questions than answers. They can’t see the central star due to the dust. They don’t know if any planets exist as yet in the system. They don’t really understand the structural details that they can see.

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Starlink added a million new customers in just the past month

9:58 am

According to a tweet by SpaceX yesterday, Starlink now has nine million active customers in 155 countries worldwide.

These numbers tell us the company is now getting more than a billion dollars per month in revenues, based on what it charges for its various plans. What make the numbers even more startling is how fast they are growing.

In a similar post from November 5, SpaceX said Starlink had 8 million customers, meaning that its customer base has expanded at a rate of more than 20,000 per day since that date.

At more than billion dollars per month, SpaceX essentially has about half the annual revenue of NASA, which it can use far more efficiently. And those numbers will only increase in the coming years, as the company opens up new markets worldwide and begins launching its upgraded Starlink satellites with Starship.

It still seems to me puzzling why, with these numbers, Musk is considering making the company public this coming summer. Though that move would bring in a gigantic amount of new investment capital from the stock sale, it would also subject the company to serious government regulation as a publicly-traded company. The Starlink revenue can only grow. Why add government interference when you can live without it?

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JAXA identifies cause of H3 rocket failure

9:44 am

In releasing today the preliminary results of its investigation into the failure on December 21, 2025 of the upper stage of its H3 rocket, Japan’s space agency pinned the likely cause on the rocket’s fairings.

Japan Aerospace Exploration Agency officials told a science ministry panel on Dec. 23 they suspect an abnormal separation of the rocket’s payload fairing—a protective nose cone shield—caused a critical drop in pressure in the second-stage engine’s hydrogen tank.

Engineers think the fairing might have hit the rocket at separation, damaging the tank.

Japan at present has no way to launch payloads. It has no operating independent commercial rocket companies, and its JAXA-owned H3 and Epsilon-S rockets have had repeated problems. The H3 failed on its first launch in 2023, causing a year-long delay, and Epsilon-S still in limbo because of repeated failures during development.

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No contact with Mars’ rovers for the next month

9:21 am

The Sun is about going to cause a month-long break in communications with Curiosity and Perseverance, the two rovers on Mars.

This communications pause occurs every two years, when the orbits of Earth and Mars align with the Sun in between.

This holiday season coincides with conjunction — every two years, because of their different orbits, Earth and Mars are obstructed from one another by the Sun; this one will last from Dec. 27 to Jan. 20. We do not like to send commands through the Sun in case they get scrambled, so we have been finishing up a few last scientific observations before preparing Curiosity for its quiet conjunction break.

This is not a unique situation. Both rovers have gone through conjunction several times previously. The science teams will place the rovers in secure positions to hold them over during the break.

As for the orbiters circling Mars, it isn’t clear how much their operations will be impacted. The update at the link above makes no mention of them, and my memory says communications with them is less hampered, though reduced somewhat.

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China’s Long March 12A launches but fails to land the first stage

9:21 pm

China’s new Long March 12A reusable rocket completed its first launch today (December 23 in China), lifting off from the Jiuquan space spaceport in northwest China. The attempt to softly land the first stage vertically at a landing pad down range however failed.

According to one report, the rocket’s upper stage reached orbit, but this remains unconfirmed. A Google-translation of this Chinese state-run report confirmed the failure of the first stage:

The rocket lifted off successfully after ignition, and its flight appeared normal during the visual observation phase. However, reports from the recovery site indicated an anomaly during the first stage’s re-entry, resulting in a “mushroom cloud” formation, and the successful recovery of the first stage was not achieved.

Several Chinese outlets showed the same image of that cloud. This is the second unsuccessful attempt by China this month to land a first stage, the first being the December 2nd attempt by the Chinese pseudo-company Landspace’s Zhuque-3 rocket. The Long March 12A is built by the government, so there is no make-believe company involved.

UPDATE: China’s state-run press has confirmed the upper stage reached orbit.

The leaders in the 2025 launch race:

168 SpaceX
86 China (a new record)
18 Rocket Lab
15 Russia

SpaceX still leads the rest of the world in successful launches, 168 to 143.

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The first launch by South Korean rocket startup Innospace fails shortly after liftoff

8:47 pm

Less than five seconds after launch

Though details are not yet available, the first launch by South Korean rocket startup Innospace of its Hanbit-Nano rocket failed less than 2 minutes after liftoff from Brazil’s long unused Alcantera spaceport. The failure occurred sometime after the rocket passed through max-q, the moment when the aerodynamic pressure of the atmosphere and the speed of the rocket stresses the rocket the most.

The live stream provided no details, other than to say “we experienced an anomaly during the flight.” No other details have yet been released.

The image to the right is a screen capture of the rocket lifting off the pad, less than a few seconds after T-0. Though the rocket appeared to move upward in a smooth controlled flight, soon thereafter it became impossible to see anything but the bright engine flame at its base. Either the flames were so bright it overexposed the live stream, or the fire was spreading beyond the nozzles. At the moment however we know nothing about what happened.

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