Category: Points of Information

Very brief descriptions, with appropriate links, of current or recent news items.

SLS begins trip back to Vehicle Assembly Building

9:12 am

NASA’s SLS rocket today began its long slow journey from the launchpad back to Vehicle Assembly Building (VAB) so that engineers can safely troubleshoot the failure of helium to properly flow into the tanks of the rocket’s upper stage following the dress rehearsal countdown last week.

NASA’s SLS (Space Launch System) rocket and Orion spacecraft for the Artemis II mission began rolling off the launch pad at 9:38 a.m. EST, Feb. 25, at NASA’s Kennedy Space Center in Florida.

Rolling from Launch Pad 39B to the Vehicle Assembly Building at NASA Kennedy is expected to take up to 12 hours.

At this time NASA officials have not yet determined whether they will need another wet dress rehearsal countdown. There are concerns however that the movement to and from the VAB might be contributing to the fuel leaks that have plagued previous rehearsals and countdowns, and if so, those concerns almost guarantee the need to do another countdown rehearsal once the helium issue is fixed and the rocket is back on the launchpad.

Officials are also reviewing potential future launch dates both in late April as well as May and June. The present window closes on April 6, though there is one launch opportunity on April 30th. Nothing has been decided as yet.

11 comments

Two SpaceX launches since yesterday

8:41 am

The beat goes on! Since yesterday SpaceX completed two Starlink launches, placing a total of 54 Starlink satellites in orbit on opposite coasts.

First, the company yesterday afternoon launched 29 Starlink satellites, its Falcon 9 rocket lifting off from Cape Canaveral in Florida. The first stage completed its 10th flight, landing on a drone ship in the Atlantic.

Then early this morning SpaceX placed another 25 Starlink satellites in orbit, its Falcon 9 rocket lifting off from Vandenberg Space Force Base in California. The first stage completed its 11th flight, landing on a drone ship in the Pacific.

The 2026 launch race:

24 SpaceX
8 China
2 Rocket Lab
2 Russia
1 ULA
1 Europe (Arianespace)

As it did in both ’24 and ’25, SpaceX in ’26 so far has more launches than the entire rest of the world combined.

Rocket Lab has a suborbital launch scheduled for later today, lifting off from Wallops Island in Virginia and carrying an Australian hypersonic test vehicle. This won’t count in the totals above, but I will report the results after launch.

6 comments

Medical company making artificial retinas buys payload slots on Starlab

8:01 am

Starlab design as of December 2025
Starlab design as of December 2025

The medical company LambdaVision announced yesterday that has booked payload slots and commercial space on Starlab in order to manufacture “protein-based artificial retinas.”

LambdaVision leverages microgravity to improve the layer-by-layer production process of their artificial retina through alternating layers of the protein bacteriorhodopsin and a polymer, supported by a membrane of a synthetic fiber that has long been used by the medical community. Reduced gravity in an LEO environment improves homogeneity, stability, and performance of thin films like the protein-based artificial retina. By using proteins similar to the visual pigment rhodopsin naturally found in our eyes, LambdaVision’s protein-based artificial retina mimics the light-absorbing properties of human photoreceptors replacing the function of these damaged cells in the retinas of blind patients.

Starlab is the giant single module space station being built by a consortium led by Voyager Technologies that will be placed in orbit by a Superheavy/Starship launch.

While NASA allowed this kind of medical research on ISS, it never allowed the companies to manufacture any products on ISS for later sale on Earth. The new private space stations are decidedly opposed to that government restriction, and thus they are attracting customers like LambdaVision because they will allow it to make money on what it produces. The press release notes that while this first project is aimed at producing artificial retinas to restore vision in patients, the technology will be applicable to “sensitive biosensors, optical systems, tissue engineering, and drug delivery applications.”

In my rankings below of the five commercial American space station projects under development, the first three are basically tied, the fourth is simply late to the game, and the last, Blue Origin’s Orbital Reef, is hardly out of the starting gate.
» Read more

7 comments

February 24, 2026 Quick space links

2:56 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

  • One of the largest known stars has changed color
    The star is located in the Large Magellanic Cloud 160,000 light years away, and has a diameter believed to be 1,500 times that of the Sun. What is happening is not really understood, but the possibilities are fascinating,
11 comments

The weird landscape of Mars’ death valley

11:19 am

Taffy terrain
Click for original image.

Cool image time! The picture to the right, rotated, cropped, reduced, and enhanced to post here, was taken on October 28, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO).

The science team labels this “bands near mesa,” an apt description. What we are looking at is a geological feature unique to Mars, but also unique to only one particular place on Mars, the planet’s death valley, the place in Hellas Basin with the lowest relative elevation of any spot on Mars.

The feature is called taffy terrain. According to a 2014 paper, the scientists posit that this material must be some sort of “a viscous fluid,” naturally flowing downward into “localized depressions.” Those localized depressions however happen to also be at the very basement of Mars.

Note how in some spots the bands appear to have been stripped off, exposing small hollows in which dust has become trapped over time to form ripple dunes.
» Read more

One comment

Chinese astronauts provide their perspective on the cracked Shenzhou-20 window

9:49 am

Shenzhou-20 after return
Shenzhou-20 after its return to Earth. The damaged
window can be seen on the right. Click for original image.

The Chinese Shenzhou-20 crew this week gave a detailed interview describing their discovery and inspection of the cracks in the window of their Shenzhou-20 capsule.

Chen Dong, commander of the Shenzhou-20 crew, first noticed the damage to the window while conducting final checks on the return capsule. The believed culprit: space debris striking the window. …As mission commander for Shenzhou-20, Chen said he was the one who went for checking out the return craft. During that work, “I spotted something like a triangular on the viewport,” he said. “My first thought was whether a small leaf had somehow stuck to the outside of the window,” said Chen. “But then I quickly realized that couldn’t happen because we were in space. How could there possibly be a fallen leaf there?”

Chen pointed out the window anomaly to his two other colleagues also in ready mode for the return trek to Earth. Wang, who served as the flight engineer on the Shenzhou-20 mission, had previously worked as an aerospace technician involved in the construction of China’s space station before becoming an astronaut. “I wasn’t really nervous, actually. The outermost layer of the viewport is a protective layer, and inside it there are two pressure-bearing layers, and we are safe as long as the cabin pressure doesn’t change,” said Wang.

Using a 40x microscope, they determined that some of the cracks had penetrated through the window’s outermost layer.

As of today however China has yet to release images of the cracks, or if they have, no western media source has found and released them.

Leave a comment

Webb tracks Uranus’ atmosphere over 15 hours

9:27 am

Uranus and its atmosphere
Click for original image.

Using the Webb Space Telescope, astronomers on January 19, 2025 were able to observe Uranus for fifteen straight hours, tracking the atmosphere’s temperature and structure more completely than ever before.

You can read the peer-reviewed paper here. The false color image to the right, reduced to post here, is just one slice of that dataset. We are looking down at Uranus’ pole, as the rotational tilt is so severe the planet rotates on its side as it orbits the Sun. The grey circles on the outside are the planet’s faint rings. The orange blobs I think are aurora that rotate around the pole at high latitudes, as shown in this video. The orange represents the upper atmosphere.

Led by Paola Tiranti of Northumbria University in the United Kingdom, the study mapped out the temperature and density of ions in the atmosphere extending up to 5,000 kilometres above Uranus’s cloud tops, a region called the ionosphere where the atmosphere becomes ionised and interacts strongly with the planet’s magnetic field. The measurements show that temperatures peak between 3,000 and 4,000 kilometres, while ion densities reach their maximum around 1,000 kilometres, revealing clear longitudinal variations linked to the complex geometry of the magnetic field.

…Webb’s data confirm that Uranus’s upper atmosphere is still cooling, extending a trend that began in the early 1990s. The team measured an average temperature of around 426 kelvins (about 150 degrees Celsius), lower than values recorded by ground-based telescopes or previous spacecraft.

Two bright auroral bands were detected near Uranus’s magnetic poles, together with a distinct depletion in emission and ion density in part of the region between two bands (a feature likely linked to transitions in magnetic field lines). Similar darkened regions have been seen at Jupiter, where the geometry of the magnetic field there controls how charged particles travel through the upper atmosphere.

There is great uncertainty in these conclusions, mostly because the observations are for such a short time. It is like trying to understand the Earth’s climate after looking at it for only one day.

Leave a comment

February 23, 2026 Quick space links

2:58 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

One comment

Saturn’s moon Enceladus, as seen during Cassini’s last close fly-by

1:22 pm

Enceladus as seen during Cassini's last close fly-by
Click for original.

Cool image time! On December 19, 2015 the Saturn orbiter Cassini made its last close fly-by of the moon Enceladus, known best for the many geysers detected on its surface venting water and other carbon-based materials.

The picture to the right, reduced and enhanced to post here, shows that the entire face of this
Saturn’s moon Enceladus, as seen during that fly-by. The moon itself is only about 310 miles across.

Its icy surface is evident, as are the many fractures, some meandering almost like rivers. Interestingly, for some reason there are a lot more craters in the lower hemisphere, while the upper hemisphere is more completely covered with fractures.

The black outline indicates the approximate area captured by the two close-up images below.
» Read more

Leave a comment

Webb imaged a star before it went supernova

11:14 am

Webb detection of a supernova progenitor
Click for original image.

One of the biggest challenges facing astronomers for more than four centuries has been the detection of a star prior to its going supernova. Until very recently, no such detection had ever happened, and so astronomers could only guess at the kind of stars or binary systems that might result in these gigantic stellar explosions.

In recent years the improvement in telescopes, both in orbit and on the ground, has produced some successes, whereby the progenitor star was imaged in archival imagery and found after the explosion. The sample however has been small, and the data limited to only a few wavelengths.

Now, the Webb Space Telescope has made its first detection of a supernova progenitor, in the infrared. That image is to the right, showing the star prior to the June 2025 supernova explosion.

By carefully aligning Hubble and Webb images taken of NGC 1637, the team was able to identify the progenitor star in images taken by Webb’s MIRI (Mid-Infrared Instrument) and NIRCam (Near-Infrared Camera) in 2024. They found that the star appeared surprisingly red – an indication that it was surrounded by dust that blocked shorter, bluer wavelengths of light. “It’s the reddest, most dusty red supergiant that we’ve seen explode as a supernova,” said graduate student and co-author Aswin Suresh of Northwestern University.

This excess of dust could help explain a long-standing problem in astronomy that could be described as the case of the missing red supergiants. Astronomers expect the most massive stars that explode as supernovas to also be the brightest and most luminous. So, they should be easy to identify in pre-supernova images. However, that hasn’t been the case.

One potential explanation is that the most massive aging stars are also the dustiest. If they’re surrounded by large quantities of dust, their light could be dimmed to the point of undetectability. The Webb observations of supernova 2025pht support that hypothesis.

You can read the peer-reviewed paper here [pdf].

One comment

First visual detection of another star’s heliosphere

9:38 am

A baby star's heliosphere
Click for full image.

Using both the Hubble Space Telescope and the Chandra X-ray Observatory, astronomers have made the first visual detection of another star’s heliosphere, in both X-rays and in the infrared.

The image to the right, cropped to post here.

Astronomers have nicknamed the HD 61005 star system the “Moth” because it is surrounded by large amounts of dust patterned similarly to the shape of a moth’s wings when viewed through infrared telescopes. The wings are formed from material left behind after the formation of the star, similar to the Kuiper Belt in our own solar system. Observations of these wings with NASA’s Hubble Space Telescope showed that the interstellar matter surrounding HD 61005 is about a thousand times denser than that around the Sun.

The wings are the points to the left and right. The star’s young heliosphere, which they dub an “astrosphere,” is the purple glow above and below. From the caption:

In this composite image of HD 61005 in the inset, X-rays from Chandra (purple and white) have been combined with infrared data from Hubble (blue and white). Chandra reveals a bright source of X-rays in the center of the image, which is the star itself surrounded by the star’s astrosphere. The wing-like structure sweeping away from the star in the infrared image is dusty material that remained behind after the formation of the star. These wings have been swept backwards as they fly through space.

As this star and its solar system are very young, what we have is a very dusty accretion disk interacting with a very temperamental baby star.

Leave a comment

Exolaunch integrates five satellites in Isar’s Spectrum rocket

8:53 am

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

Exolaunch, which specializes in preparing and integrating satellites onto rockets for satellite companies, has now completed the integration of the five satellite payloads that will fly on the second launch attempt of the German startup Isar Aerospace.

The launch is presently scheduled for March 19, 2026, lifting off from Norway’s Andoya spaceport, and is Isar’s second attempt to complete an orbital launch. The first, in March 2025, failed mere seconds after launch due to a loss of attitude control.

The payloads are as follows:

  • CyBEEsat for Technische Universität Berlin (Germany)
  • TRISAT-S for University of Maribor (Slovenia)
  • STS1 for Technische Universität Wien (Austria)
  • Platform 6 6UXL for Endurosat (Bulgaria)
  • FramSat1 for Norwegian University of Science and Technology (Norway).

These are all cubesats and are all likely student projects, willing to risk their launch on an untested rocket because the cost is low.

Of the half dozen or so rocket startups in Europe, Isar appears in the lead. Both PLD and Rocket Factory Augsburg say they will attempt a launch in 2026, but neither has set a date. And both will be trying for their first time, unlike Isar.

It also appears that Andoya is in the lead in the race to be the first European spaceport to complete an orbital launch. The spaceports in the United Kingdom started almost a decade earlier, but have been stymied by government red tape. Norway in turn moved fast to make its regulations simple and fast.

Leave a comment

SpaceX launches 28 more Starlink satellites on 2nd launch today; sets new 1st stage reuse record

9:36 pm

SpaceX this evening completed its second launch today, placing 28 more Starlink satellites in orbit, its Falcon 9 rocket lifting off from Cape Canaveral Space Force Station in Florida.

The first stage (B1067) completed its 33rd flight, landing on a drone ship in the Atlantic. With this flight, B1067 has tied the space shuttle Atlantis for the second most reused launch vehicle on record.

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

Sources here and here.

The 2026 launch race:

22 SpaceX
8 China
2 Rocket Lab
2 Russia
1 ULA
1 Europe (Arianespace)

As it did in both ’24 and ’25, SpaceX in ’26 so far has more launches than the entire rest of the world combined.

13 comments

SpaceX launches 25 more Starlink satellites

9:19 am

SpaceX early this morning successfully placed another 25 Starlink satellites into orbit, its Falcon 9 rocket lifting off from Vandenberg Space Force Base in California.f

The first stage (B1063) completed its 31st flight, landing on a drone ship in the Pacific, moving it up in the rankings for the most reused launch vehicles:

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

Sources here and here.

The 2026 launch race:

21 SpaceX
8 China
2 Rocket Lab
2 Russia
1 ULA
1 Europe (Arianespace)

As it did in both ’24 and ’25, SpaceX in ’26 so far has more launches than the entire rest of the world combined.

Leave a comment

February 20, 2026 Quick space links

3:02 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

12 comments

Scientists: When a SpaceX upper stage burns up in the atmosphere, it burns up in the atmosphere!

10:12 am

Chicken Little rules!
Chicken Little rules!

We’re all gonna die! In making the first direct measurement of the plume caused by the vaporization of the lithium in a SpaceX Falcon 9 upper stage as it burned up in the atmosphere, scientists now claim the pollution for those upper stages as well as the coming launch of tens of thousands of satellites is going to seriously harm the environment.

You can read their paper here. From its conclusion:

Beyond this single event, recurring re-entries may sustain an increased level of anthropogenic flux of metals and metal oxides into the middle atmosphere with cumulative, climate-relevant consequences. After oxidation and heterogeneous uptake on alumina and other metal-oxide particles, aluminium and co-injected species could perturb stratospheric ozone chemistry, modify high-altitude aerosol microphysics through new particle formation, growth, and coagulation, and thereby influence radiative balance. Key unknowns include emission inventories for rockets and satellites, lack of a systematic observational survey of mesospheric metals, altitude-time ablation profiles, chemical lifetimes, particle size-composition distributions, and transport pathways into the lower stratosphere. Addressing these uncertainties will require coordinated, multi-site observations (including resonance-fluorescence and elastic lidars, in situ sampling, and satellites), together with whole-atmosphere chemistry-climate modelling to connect event-scale injections to long-term impacts.

The problems with this study, and its conclusions, are numerous. First of all, this first direct detection of the lithium plume is really no discovery at all. We know the rocket’s upper stage carried lithium. We know it burned up in the atmosphere. It is plainly obvious that lithium would end up as vapor in the upper atmosphere where stage burned up. This detection simply measured what we already knew.

Second, the amount detected is really insignificant. At about 60 miles elevation the numbers rose from 3 lithium atoms per cubic centimeter to 31 during the stage’s burn-up, numbers that will quickly dissipate at these high altitudes. We are not talking big numbers.

Finally, the threat from debris from upper rocket stages is only a temporary problem. As the demand to launch more satellites grows — which it will — the demand to recover and reuse the upper stages will grow as well. Already two American companies, SpaceX and Stoke Space, are developing rockets that will be completely reusable.

The mentality of these scientists is the same “Chicken Little” view of life held by the establishment science community for decades, from climate to industry to Covid to any human endeavor. “Everything humans do is bad! We must ban it now before it destroys us all!” And none of their cries of panic ever carry any larger context or reasonable perspective.

Sadly, this same attitude permeates the mainstream propaganda press. They don’t question such studies, they instead reprint their claims in bold, without any skepticism. We are thus ill-served by our so-called “independent and free” press.

27 comments

SpaceX launches 29 Starlink satellites

9:04 am

SpaceX early today successfully launched another 29 Starlink satellites, its Falcon 9 rocket lifting off from Cape Canaveral.

The first stage completed its 26th flight, landing on a drone ship in the Atlantic, within the territorial waters of the Bahamas for the second time.

The 2026 launch race:

20 SpaceX
8 China
2 Rocket Lab
2 Russia
1 ULA
1 Europe (Arianespace)

As it did in both ’24 and ’25, SpaceX in ’26 so far has more launches than the entire rest of the world combined.

Leave a comment

February 19, 2026 Quick space links

3:04 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

5 comments

February 18, 2026 Quick space links

2:48 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

6 comments

Sorry about the lack of posts…

2:24 pm

I feel obliged to apologize for the general low rate of posting the past few days. First I am still fighting this head cold, which though it appears to be fading it still leaves me foggy-brained at times. This situation was made worse today when the profile vanished from my Thunderbird email program. How it vanished remains a mystery, but it took me more than an hour to upload a back-up (from a week ago) and get it to work with the program. Thus I lost about a week’s emails.

Hardly a tragedy but all this has been quite exhausting. Hopefully by tomorrow things will run better.

Regardless, I want to thank my readers for their kind words and support. It is truly appreciated.

8 comments

UAE extends mission of its Al-Amal Mars orbiter

8:57 am

Deimos with Mars in the background
Al-Amal’s 2023 image of Deimos, the first good
picture of the moon ever taken. Click for full movie.

The United Arab Emirates (UAE) yesterday announced it is extending the mission of its Al-Amal Mars orbiter (“Hope” in English) to 2028, significantly beyond its initial planned mission of two years.

Launched in July 2020, the Hope Probe successfully entered Mars orbit in February 2021 after a seven-month interplanetary journey, marking a historic achievement as the first Arab nation to reach the Red Planet. Originally designed as a two-year mission to observe and study Mars’ atmosphere, the probe has far exceeded expectations. Since reaching Mars, it has gathered around 10 terabytes of scientific data, shared through more than a dozen datasets with research institutions worldwide.

The probe itself was mostly built by American engineers and organizations, as part of a deal to train UAE students. Once in operation around Mars, the UAE and those students took over almost all operations. It orbits Mars in a very wide orbit, allowing it to study global weather and atmosphere conditions, such as dust storms.

6 comments

Bahamas allows SpaceX to resume Falcon 9 landings inside Bahamian waters

8:49 am

The Civil Aviation Authority of the Bahamas (CAAB) this week announced that it is allowing SpaceX to resume Falcon 9 landings inside Bahamian waters.

In a statement, CAAB said that one landing is scheduled for Wednesday night between 5:00 pm and 9:30 pm (local time). “All requisite regulatory and environmental reviews and clearances have been completed in accordance with established aerospace safety and operations protocols,” CAAB said, reminding the population that, depending on weather and atmospheric conditions, “one or more sound booms may be heard during the landing sequence”.

SpaceX had completed one landing in February 2025, but the CAAB then paused further landings two months later, claiming it wanted to do a full environmental review.

There was also the issue of a SpaceX $1 million donation to the University of the Bahamas. Maybe the CAAB wanted to wait until the check cleared.

As should be expected, a fringe of anti-Musk activists began screaming “environmental disaster” and getting the full support of the propaganda press. The claim is utterly stupid, considering SpaceX has landed hundreds of Falcon 9s in the past decade harmlessly.

7 comments

February 17, 2026 Quick space links

2:46 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

10 comments

Pluto’s floating mountains of frozen ice

10:18 am

Pluto's floating mountains
Click for original image.

Cool image time! The picture to the right, rotated, cropped, and sharpened to post here, was taken by New Horizons on July 14, 2015 when it made its close fly-by of Pluto.

The picture looks at the part of Pluto that was close to sunset. Hence the mountain’s long dramatic shadow. The raw image webpage provides little information, including a scale of 0.0 meters, which means nothing. My guess is that these mountains could be several hundred to several thousand feet high based on data from other New Horizon mountain images, but that is a pure guess.

What we think we know is that these mountains are likely made of ice, which at Pluto’s eternally cold environment is as hard as granite. We also think we know that they float on a layer of frozen nitrogen, but because that nitrogen can sublimate into gas when Pluto’s climate warms as its orbit brings it closer to the Sun, the foundation of these mountains is quite unstable. They can roll and drift about, even if they are the size of the Appalachian mountains in the eastern U.S.

I continue to delve into the New Horizons’ archive, and have discovered a trove of quite amazing pictures that hadn’t been featured by the science team during the fly-by. Pluto really is an alien place. Stay tuned, there is more to come!

2 comments

NASA now targeting February 19, 2026 for 2nd SLS wet dress rehearsal countdown

8:20 am

According to an announcement yesterday afternoon, NASA is now targeting February 19, 2026 for the second SLS wet dress rehearsal countdown.

During the rehearsal, the team will execute a detailed countdown sequence. Operators will conduct two runs of the last ten minutes of the countdown, known as terminal count. They will pause at T-1 minute and 30 seconds for up to three minutes, then resume until T-33 seconds before launch and pause again. After that, they will recycle the clock back to T-10 minutes and conduct a second terminal countdown to just inside of T-30 seconds before ending the sequence. This process simulates real-world conditions, including scenarios where a launch might be scrubbed due to technical or weather issues.

If this dress rehearsal goes off perfectly, NASA is considering the possibility of an actual launch attempt on March 6, 2026, though it admits that date is very preliminary That launch will carry four astronauts on a ten-day mission slingshot around the Moon and back to Earth, using an Orion capsule with untested life support system and a questionable heat shield.

The present launch window for this mission closes on April 6th, so NASA’s margins will shrink considerably if this second dress rehearsal has any further problems.

2 comments

A realistic plan to send a spacecraft to interstellar Comet 3I/Atlas

8:01 am

Scientists have devised a mission profile that could actually get a spacecraft close to Comet 3I/Atlas sometime around 2085.

…the team found that an intercept could be achieved via a Solar Oberth maneuver, but the launch would have to occur in 2035 to achieve optimal alignment between Earth, Jupiter and 3I/ATLAS. The flight duration would be 50 years (though Hibberd notes that this could be reduced marginally). “2035 is optimal because the alignments of the celestial bodies involved (i.e. the Earth, Jupiter, Sun, and 3I/ATLAS) are the most propitious to reach 3I/ATLAS with a minimum Solar Oberth propulsion requirement from the probe, a minimum performance requirement for the launch vehicle, and a minimum flight time to the target,” he said.

The Solar Oberth maneuver has the spacecraft fire its engines at the moment it is zipping past the Sun at its closest and fastest, taking full advantage of that gravitational velocity.

You can read their paper here [pdf] As they note in their conclusion, this entire mission is based on using “a Starship Block 3 upper stage fully-refuelled in Low Earth Orbit.” It assumes that by 2035 Starship will be flying routinely and cheaply, and could be purchased at a reasonable cost for such a mission.

Or maybe donated in the name of science by some billionaire who happens to care about making the human race multi-planetary. Know anyone?

Personally, I wonder it this mission profile could be adapted to reach the first known interstellar object, Oumuamua. 3I/Atlas appears to simply be a comet. Though a visit would be of value it would not Earth-shaking. Oumuamua however was not a comet, but more importantly it was strange in every way. Though astronomers in 2019 declared based on the available data that it was definitely not an alien spaceship, that conclusion remains very uncertain. As I wrote at the time:

…for anyone to assume there is any certainty to this conclusion would be a grave mistake. It is merely the best guess, based on the available but somewhat limited data. The data however does not preclude more exotic explanations. Nothing is certain.

To me this object should get top priority.

Hat tip BtB’s stringer Jay.

11 comments

February 16, 2026 Quick space links

2:42 pm

Courtesy of BtB’s stringer Jay. This post is also an open thread. I welcome my readers to post any comments or additional links relating to any space issues, even if unrelated to the links below.

Leave a comment

A sinuous Martian ridge of uncertain origin

10:06 am

A sinuous ridge of uncertain origin
Click for original image.

Cool image time! The picture to the right, rotated, cropped, reduced, and sharpened to post here, was taken on July 21, 2025 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It was posted today by the camera team as a captioned image, with the caption as follows:

The sinuous ridge is approximately 10 meters wide and several kilometers long. The floor surrounding this ridge has been eroding laterally, forming pits and circular features suggestive of removal (sublimation) of subsurface ice. However, landforms such as channels or moraines that might suggest the presence of water or ice are lacking, so the ridge itself does not appear to have formed by fluvial or glacial processes.

Perhaps this curious feature is an exhumed dike formed from magma emanating from Alba Mons in subsurface fractures.

Alba Mons is a gigantic shield volcano to the west.
» Read more

One comment
1 2 3 4 5 … 954