On Day 12, we now have about 4500 images made by humans posted at the halfway mark. Do yourself a favour and check it out. #Art

To sum up iopscience.iop.org/article/10.3... - the initial spacecraft astrometry of 3I/ATLAS substantially improves its orbit determination - this helped show that 3I/ATLAS has a significant non-gravitational acceleration & - indicates 3I is significantly less massive than originally supposed.

Rest in Form, Frank Gehry

Day 3 #ArtAdventCalendar Badlands 36x48in 91x121cm Oil on Canvas 2023 #Art #Painting

Cut of the original video with the #3IATLAS cameo. The video is reversed, I find it easier to find it with it going from right to left. Its path starts below the saturated region on the middle right and goes in a slight diagonal towards the left.

#WundaCrater #UmbrielMoon

"Neretva Lake" Styluspainted on tablet with #SketchbookApp #ArtAdventCalendar #ArtAdventCalendar2025

The "translucent ripples" effect, I hadn't felt it since the Valinor ripples where Ingenuity now lays.

#JezeroAstrotourists thus far in bsky

Snodgrass et al: "Considerations on the process of target selection for the @cometinterceptor.bsky.social mission" arxiv.org/abs/2511.20521 #PlanetSci #PlanetaryScience #CometInterceptorMission

Hey #planetSci friends, the end of the year is nearing. Does anyone want to help me put together an Image of the Year Bracket? If you want to propose your favourite planetary science image of 2025, place it below with a link to the source and when it was published.

@wierzchos.bsky.social qué sorpresa encontrarte referido en un paper sobre coatings en Marte, se me había olvidado a lo que se dedicaba tu padre 😉 onlinelibrary.wiley.com/doi/10.1111/... agupubs.onlinelibrary.wiley.com/doi/10.1029/...

Yesterday Curiosity took pix of jagged peaks in the distance with its ChemCam. I stitched them together, did some work on them, and... just look at that view... I've been doing this since Sojourner landed & this is one of my fave images ever... Credits: NASA/JPL-Caltech/LANL/S Atkinson

Quick & dirty animation of pre- and post-abrasion WATSON photos by #PerseveranceRover on sols 1630 & 1631. Based on treated images by 65dBnoise: mastodon.social/@65dBnoise/1... mastodon.social/@65dBnoise/1...

I've been asked a few times over the last few days what I think the chances are that the "leopard spots and poppy seeds" on Mars will turn out to be actual evidence of life. People are naturally skeptical given the history of possible signs of life on other planets. Strap in: long thread ahead...

Today I happened to leave Jezero crater 🙃 (mastodon.social/@sharponlook...)

After poking around and finding the base of the flow, the story became much richer: the basalt had flowed over some eolian dunes which sourced the water for the hydrothermal system. The sand might have accumulated as obstacle dunes around a bedrock hill, then buried by the flow in a valley. (2/2)

The IAU announced official names for Donaldjohanson's surface & shape features 2 weeks ago, but nobody has mentioned the news. They're all named after archeological sites and hominin fossils, which is fun and awesome haha (Afar Lobus = small lobe, Olduvai Lobus = big lobe, Windover Collum = neck)

There's a lot happening in that closeup, great color work! But don't zoom & rotate too much, maybe you get a scare 😬

Impact crater caused by (possibly) a piece of #PerseveranceRover cruise stage. Comparison between HIRISE images from 2012, 2021 and 2024. Approximately 70km NW of #JezeroCrater: muted.uni-muenster.de?x=76.208&y=1... 🧵 1/2 #PlanetaryScience

Concretions? Spherules? Why not both? 🙃 #PerseveranceRover Sol 1591 mars.nasa.gov/mars2020/mul... mastodon.social/@sharponlook...

Spherule-rich float rocks side-by-side comparison: St Paul's Bay vs "Gandalf's hat" (sic 🙃) 🧪🔭 #PlanetaryScience Source images: NASA/JPL-Caltech/ASU

If you liked the quoted cloudy panorama by @stim3on.bsky.social, there's a relevant current #Zooniverse project: www.zooniverse.org/projects/mat... with #MavenMission UV mosaics. Not a simple task, but a good one to grasp how much activity there is in the Mars atmosphere. #PlanetaryScience

The #LucyMission posted yesterday the highest resolution photo they got of the whole #AsteroidDonaldjohanson (there are higher res partial closer photos) science.nasa.gov/blogs/lucy/2... They have some other goodies in their gallery lucy.swri.edu/Donaldjohans...

@PhilStooke.mastodon.social.ap.brid.gy has bridged his account, so you can follow his Mastodon threads here too 🔭 #planetsci

¿No me digas que he vuelto a poner la pieza mal orientada como las imágenes Watson del otro día? 😅 ¿Me permite añadir mi versión a su hilo? Asteroid #Donaldjohanson Long-Range Reconnaissance Imager NASA’s #Lucy science.nasa.gov/image-articl... NASA/Goddard/SwRI/Johns Hopkins APL/j. Roger

If you haven't yet: try the "bowling ball approaching the pin" point of view for #Donaldjohanson 😉 Credit: NASA/Goddard/SwRI/Johns Hopkins APL science.nasa.gov/image-articl...

Exquisite work! 👍 I took the liberty of rotating the 2nd one a bit, it gives a better sense of orientation. The detail and the lightning are great input for seeing how some of the small features that might look like the leopard spots from Cheyava, are probably impact spherules in this case.

North of Las Vegas NV...amazing geology, spectacular scenery, and petroglyphs.

Now with a free-to-view link that I've finagled! All of you deserve to see Pluto and Charon's fun new originL rdcu.be/d5rp7

An animation showing how Io's specular highlights change with changing viewing geometry. The illumination geometry is constant. The highlights are rendered using a preliminary illumination model - the specular reflections are based on the Phong specular reflection model. vimeo.com/914591010

Martian rocks as Muppets (aka #muppetdolia), a thread Perseverance sol 1268 (by Dox Castle) / Big Bird mars.nasa.gov/mars2020-raw... 1/n

This course belongs in a museum! 😉 My 1st run, I went for the science but it specially opened my eyes to the outer solsys. The 2nd, I wanted more Mars background for improving my understanding of Perseverance and it DELIVERED. Who knows a 3rd? 😉 bsky.app/profile/shar...

Martian rocks as Muppets (aka #muppetdolia), a thread Perseverance sol 1268 (by Dox Castle) / Big Bird mars.nasa.gov/mars2020-raw... 1/n

"Sierra Comet" #ArtAdventCalendar From 2023, fingerpainted on tablet with #SketchbookApp And that's it. God Jul, Happy Holidays, Féliz Navidad, Zorionak! Thx eveyone for liking & sharing and specially to @jayispainting.earthskyart.ca , get well soon!

Impromptu #ArtAdventCalendar, yesterday's phone photo op while on an evening run

For today's #ArtAdventCalendar, the "astrotourists in Jezero crater" series From 2022, 2023 & 2024 : "Dasein", "Tourist at Kodiak", "Map of the Jezero Delta, Tolkien-style", "Not My Best Side" All finger- or styluspainted on tablet with #SketchbookApp

If you see this, post something monochromatic "Asteroid Lutetia" From 2019, fingersmudged on tablet with #SketchbookApp #ArtAdventCalendar

"Crater Traverse" Styluspainted on tablet with #SketchbookApp #ArtAdventCalendar

Besides spookiness, a fine example of a fallen chunk of Rockytop outcrop, with probable coatings of its own category as described here: Theuer et al : "Characterization of Rock Coatings in the Fan Front, Upper Fan, and Margin Units Using Mastcam-Z Data" www.hou.usra.edu/meetings/ten...

What I like the most in these is the row of bright rocks behind the Pico Turquino ridge, still haven't located it on the map though. Right behind that row runs an almost invisible regolith "horizon" and the ridges that show up behind are on the Margin Unit, 3 or so km away. 🤯

📢Publication alert📢 Two 3D models from the section I am studying are publicly available: 3D model of one parasequence of a #clastic, #shallowmarine outcrop in the Western Interior Basin #WIB (Judith River Fm, #Cretaceous) Here you have a taste of them ⛰️ #Stratigraphy data.4tu.nl/datasets/414...

#PlanetaryScience "Old" paper, but maybe Wunda crater was new to you too? Also, check Phil Stooke's ongoing series on outer Solar System moons: mastodon.social/@PhilStooke/...

The interstellar object population of the Galaxy is this overlapping tapestry of streams, each a complex & varying density structure, spreading & wrapping - like a braided river on its braidplain

If you, like me, were new to #WundaCrater on #UmbrielMoon, here's a 2017 paper on how it's most likely a cold trap for CO2. Sori et al: "A Wunda-full world? Carbon dioxide ice deposits on Umbriel and other Uranian moons" lunar.earth.northwestern.edu/courses/450/...

If you, like me, were new to #WundaCrater on #UmbrielMoon, here's a 2017 paper on how it's most likely a cold trap for CO2. Sori et al: "A Wunda-full world? Carbon dioxide ice deposits on Umbriel and other Uranian moons" lunar.earth.northwestern.edu/courses/450/...

Someone go find a crater in northern Sweden, instructions in this open access paper. We're talking a >600My one on glacially eroded areas, so it may be a tad difficult 😉 Alwmark et al: "A Cryogenian impact structure lurking in the shadows of northern Sweden" onlinelibrary.wiley.com/doi/10.1111/...

Someone go find a crater in northern Sweden, instructions in this open access paper. We're talking a >600My one on glacially eroded areas, so it may be a tad difficult 😉 Alwmark et al: "A Cryogenian impact structure lurking in the shadows of northern Sweden" onlinelibrary.wiley.com/doi/10.1111/...

For #FridayFold : twisted flysch by the islet bridge, from our recent visit to #Gaztelugatxe #FoldFriday

For #FridayFold : twisted flysch by the islet bridge, from our recent visit to #Gaztelugatxe #FoldFriday