With the flood of (clearly) AI images everywhere, I'm getting more and more tempted to click on anything that's just Word Art and Comic Sans.

We’re getting so many journal submissions from people who think ‘it kinda works’ is the standard to aim for.

PoLaRiSaTie!

Hi #planetaryScience folks, we have an open position for a *Professor in Planetary Sciences* at the Space Research & Planetary Sciences Division of the @unibe.ch. Application deadline: *Jan 31, 2026* Full ad: ohws.prospective.ch/public/v1/jo... Reach out to me if you have any questions! 🧵 1/5

Share a photograph you’ve taken of mountains.

Seriously, how many crimes are the other politicians happy to get along with before they do something?

Yesterday it was cows using tools, today its penguins using satellite imagery.

Science! Now with 75% Jameses!

A rare bit of good news from the US. House republicans seem to be pushing back against Trump's huge proposed cuts to science. NSF, NASA, NOAA - all look set to be near flat, or - for DOE - even a slight increase. www.economist.com/united-state...

With the help of Gaia, some more cold Jupiters are found. They're at longer periods than the bulk of the known exoplanets, and at lower masses than most other known long-period planets. Wu+ arxiv.org/abs/2601.11280 🧪🔭 #exoplanets

Guess I missed a good aurora :(

Wow, I didn't know HCN crystals ("ice") could form cobweb-like structures. They look so cool! Cappelletti+ pubs.acs.org/doi/10.1021/... (And anyone messing around with HCN ice (and benzene ice), please please make some far-infrared measurements...There's a mystery to solve!) 🧪

we found the same with nircam last year! two independent instruments showing strong CO2 features and the power of JWST at high contrasts

Next week, I will start a course in science journalism. Exciting and a bit scary! Who knows what it will bring, but I will keep an eye out for nice commutable science jobs. And I might need some quotes at some point :)

21 years ago, humanity landed on Saturn's moon Titan.

JWST managed to determine the composition of three planets in the HR 8799 system. They found that the planets are all similarly enriched in heavy elements compared to the star, similar to Jupiter here. A bit surprising considering formation models. Ruffio+ arxiv.org/abs/2601.08227 🧪🔭🪐

Did you not learn from history? You're the baddie, dude.

We don’t have a problem with immigration in this country. We have a problem with racists.

De ZW-Veluwe roedel bij een prachtige winterse zonsondergang.Voor zover ik er zicht op heb bestaat ze uit 2 ouderdieren, 2 jaarlingen en 7 “welpen”. ( 2 welpen zijn in de herfst verongelukt op de N224) Zo nu en dan ook een een enkele doortrekker op camera.

I removed some noise for the animation. Planet #Uranus and inner moons with #JWST NIRCam (F150W2). Program: www.stsci.edu/jwst-program...

#CASSINI ORBITER #SATURN MISSION Target: #Titan Time: 2008-05-12 Saturn Orbit Number: 067 Distance to Surface (km): 175810.031 Camera: Narrow Angle UV3 Filter opus.pds-rings.seti.org/opus/#/COISS... NASA/JPL/j. Roger

Some nice snow layering around the house. We've had several days of snow here, which is quite rare these days.

satellietfoto van besneeuwd amsterdam (sentinel-2, 6 jan) 👍🏽🤗⛄ www.esa.int/ESA_Multimed...

Ah nice! I love some good forward scattering!

Trump - who didn't actually end any wars - appears to have started one now.

Our snowman says hi!

My daughter heard AC/DC and thought it sounded like Donald Duck singing. She might have a point.

Happy new year, people of BlueSky!

The old grey one.

I guess it's good to check if there was an opportunity? Some non-detections of technosignatures from 3I/ATLAS: Jacobsen-Bell+ arxiv.org/abs/2512.19763 Sheikh+ arxiv.org/abs/2512.18142 🧪🔭

Did/do musicians write their song intros to grab attention, or do they take into account that the DJ will likely just yap over it?

1/n 2 NEW epic images of Phobos over Mars just released by @esa.int Mars Express This view is especially striking, with Phobos between the Tharsis volcanoes and Noctis Labyrinthus–Valles Marineris Full resolution 300MP(!) & info on: flic.kr/p/2rMW4so Credit: ESA/DLR/FUBerlin/AndreaLuck CC BY 🧪🔭

Happy solstice! May your days become brighter.

On Nov 25, asteroid Nephele passed in front of a distant star. For ~20 seconds, the star disappeared. That blackout let #astronomers measure a 100 km-wide asteroid orbiting between Mars and Jupiter. Quiet moments like this are how we map and understand what’s moving through our solar system.

Europa Clipper has observed interstellar comet 3I/ATLAS with its ultraviolet spectrograph instrument! News here: www.swri.org/newsroom/pre...

Love this plot of the infrared absorption of lots of different hydrocarbon molecules (and DMS). Titan measurements are used here as an exercise for interpretation of exoplanet measurements. Niraula+ iopscience.iop.org/article/10.3... 🧪🔭☄️🪐

Weee whirly stuff at Jupiter's high latitudes from the Juno spacecraft! @leighfletcher.bsky.social + arxiv.org/abs/2512.15696 🧪🔭☄️

Jesus fucking christ.

Also check the comments.

For very hot exoplanets, people can now see how much of each element is there in the atmosphere and compare it to that of the star. In this case (WASP-189b), the rock-forming elements are like that of the star, as expected. The volatile elements (C,O) are lower. Sanchez+ arxiv.org/abs/2512.10904 🧪🔭🪐

Nog steeds relevant, me dunkt. Voor zowel de grote ego's die graag in de spotlights staan, als de neerbuigende kijk op wetenschappers die graag aan wetenschapscommunicatie doen.

You know what has no ads? Books ❤️

You will be visited by three spirits..

Symbolic milestone in sight, 29,9% of full profs female in the Netherlands. But growth remains slow and parity not expected before 2044 www.lnvh.nl/a-4100/monit...

A constellation of amateur astronomers observed a disintegrating exoplanet for @unistellar.bsky.social & @setiinstitute.bsky.social professional astronomers. It's thought it has a comet like appearance, so I made a gif. Our data shows a dimming of the star as the planet goes in front. #Astronomy

Glowing below the full Moon, the ELT dome might look small in this image. Yet the full 30-minute walk via the set of stairs from the entrance of the dome to its top indicates its gigantic size: 80 m high & 93 m wide! Read more: https://www.eso.org/public/images/potw2549a/ 🔭 🧪 📷 L. Sbordone/ESO