And another new asteroid! Here's Torifune, captured during yesterday's flyby by Hayabusa2. www.jaxa.jp/press/2026/0...

There’s a lot going on right now and in science it’s peak conference season - but this mission is worth following. A successful demonstration of this orbit boosting could be consequential for other missions.

Voor de cursus wetenschapsjournalistiek schreef ik ook een stukje over dit onderwerp. weirdatmospheres.blogspot.com/2026/07/er-i...

Wat zou dat nou zijn, hè? Het is een raadsel.

That's about the same as all the world's aircraft-related deaths of the last few decades, all in a week.

First detection of reflected light of an exoplanet at high spectral resolution? Borsa+ arxiv.org/abs/2606.30793 Would be cool! I don't really understand what their methods were though (not a problem for the reviewer, apparently). I hope there will be more explanation/replication. 🧪🔭 #exoplanets

The CRASH Clock paper is now peer-reviewed! So to celebrate, my co-authors and I wrote an explainer article (because how better to celebrate one article than by writing another... oh academia...) It's now published in The Conversation Canada […]

Trains cancelled. All sorts of helpdesks completely unavailable the last 13 hours. Don't they prepare for situations like this?

Europe will live in fear of the summer. All the lives lost, the damage done, the aircons to buy, the investments to make... But they say reducing co2 is expensive. Expensive for whom, actually?

Recent French national average temperatures: - impossible in a pre-industrial world, - about 1 year in 40 years in a 1.5C world - 1 in 10 years in a +2 °C world - 3 degree world - happens every other year interactive/method/maps here (également en français): benmsanderson.github.io/futureevent/

Petty rant: if your novel is set in victorian London, you really don't have to name-drop Charles Dickens. The reader already has the association. It's the second book (bestseller) in a row like this.

Fleeing the country. Not sure London will be better though.

You've seen Euclid's dazzling image of the Milky Way’s crowded heart. Now explore it yourself. Zoom in, zoom out, go wherever your curiosity takes you 🤩 – in #ESAsky 👇 sky.esa.int/esasky/?targ... 🔭 🧪 ☄️

Welcome to another edition of heat dome!

Our house has a lapse rate of about 2 degrees/floor.

I am INCREDIBLY lucky to get to be an astronomer as my day job - and if it has taught me anything, it is that 99.99999999999% of our Universe is an inhospitable shithole. This blue speck in a sea of darkness is the only place we have, and we should really start treating it like that.

Euclid, enhance!

Ok, managed to cool down the living room to 22 degrees C. Now let's dig in and hope for the best.

Today's arXiv Day: two papers reporting the discovery of Beta Pictoris d. arxiv.org/abs/2606.23789 arxiv.org/abs/2606.23801 #arXiv #arXivDay #exoplanet

Excited at our paper just out in PNAS. We used JWST to detect frozen deuterated water ("heavy water") on the moons of Uranus. There is **much more** on the moons than on Uranus itself, showing that Uranus and the moons formed from separate reservoirs of water. Fun lab work in the supplement, too.🔭🪐

@trovemaster.bsky.social Congrats on the ERC!

New JWST/MIRI phase curves of TRAPPIST-1 b and c. We directly constrain both dayside and nightside emission of temperate Earth-sized planets for the first time. The strong day–night contrast rules out thick atmospheres. www.exotic.uliege.be/cms/c_136702... www.nature.com/articles/s41...

Fun fact: Titanium dioxide (TiO2), which may form clouds in hot exoplanets, is the pigment in some white paint. 🧪🔭 #exoplanets

iemand nog leuke react memes?

⚠️ Today, we are posting on #arXiv not only 1, nor 2, but 3 papers on the fascinating system #HIP41378. This system hosts 6 and maybe 7 planets 🪐. These papers are the results of a long-lasting investigation on this system initially discovered by the K2's mission, reported in 2016. (🧵 1/6 👇)

When your kid's musical performance is also something you can recommend to people outside the immediate family, you're doing something right as a teacher/writer.

Finally out: our monster paper looking more carefully into the GCB ensemble of global CO2 inversions. Mainly led by Ingrid Luijkx and Auke van der Woude, but I did quite some bits for the first draft. doi.org/10.1029/2025... It also contains suggestions for using these kinds of datasets. 🌍 1/..🧵

Finally out: our monster paper looking more carefully into the GCB ensemble of global CO2 inversions. Mainly led by Ingrid Luijkx and Auke van der Woude, but I did quite some bits for the first draft. doi.org/10.1029/2025... It also contains suggestions for using these kinds of datasets. 🌍 1/..🧵

Koning gehaktbal! #nedswe

Advertise your Bluesky account with a Simpsons gif

Toenik Gakpo voor het eerst zag spelen (in oranje) dacht ik steeds: Zegt de commentator nou Koning Gehaktbal?

AI gaat er in ieder geval voor zorgen dat het woord "al" aan het begin van de zin verdwijnt.

Another subtlety to take into account when modelling exoplanets. They rotate and have tidal interactions, which modifies the vertical forces on the atmosphere besides gravity. Arnav+Hazra arxiv.org/abs/2606.18100 🧪🔭 #exoplanets

A picture is starting to emerge about TiO gas in very big and hot exoplanets. The nightside might be important for the conditions on the dayside. Pelletier+ arxiv.org/abs/2606.15934

Maybe helpful for others here, too A: “You cannot prove the student used AI to write” B: “No need to. It suffices to show that the text is disconnected from and/or misrepresents the cited literature.”

🙌 👑 ❤️

And how can stock markets still go up when many people's lives are getting worse?

Can't believe so many people bought into the pipe dream ponzi scheme.

I wish as a society we didn’t long for power, & instead aimed to be decent people who care for each other and our world. It’s alluring to see all that money, to be sold the sci fi dreams of our childhoods, the escape, the adventure. Only the worst kind of people use our dreams against us.

Ooo another mysterious feature in Titan's spectrum. Probably from the surface. Bezard+ arxiv.org/abs/2606.13350 🧪🔭☄️

Het is nooit "gisten", telefoon.

This may make me sound a bit bigheaded… but I can't get my jumper off.

A powerful El Niño Event is expected to develop during 2026. How powerful? Well the seasonal forecasting models are currently all over the place. So, somewhere between a Top 10 event in modern history and super-bonkers extreme crazy land. 🤔 🧪🌊

Here's a fun little martian rock found by the Mars Perseverance Rover, taken yestersol (Sol 1882). flic.kr/p/2shkXtR

I led a paper on “Upper limits on exosatellites around Beta Pictoris b” where we searched for exomoons/satellites around the closest known directly imaged exoplanet. We combined CRIRES+ radial velocity and astrometry showing nothing >150 Earth mass in the Hill sphere #astrodon #exoplanets 🔭 /1

#Bugsky 🐙🌿 Shared with me by a fof in SoCal - this is a gynandromorph (both male & female) valley carpenter bee (Xylocopa sonorina). Females are black, males orange, so the extreme color dimorphism really stands out. Per Doug Yanega at UC Riverside, bee gynandromorphs he’s seen are mosaic instead—

New Paper Klaxon🚨 I am super excited to share this one which has been 3 years in the making! "Magnesium Silicate Clouds in the Atmosphere of HD 209458b from a Rule-Based Tree-Structured Data Reduction" which is led by Katy Chubb & David Grant Cloud & data 🧵 time #astronomy🔭 #science🧪 1/n

Possibly another sulfur molecule (CS2) in an exoplanet atmosphere. Dai+ arxiv.org/abs/2606.00974 IMO a nice example of how retrievals can give a hint of what's going on. More complicated (chemistry, etc) models can be (and are) used to test the validity and understand the mechanisms. 🧪🔭#exoplanets

Possibly one of the most important things I’ve learned as a PI over the last 12 years is that when you have a limited amount of money and you have to choose between Technology and People. You should choose people every time.

Taken with our VLT over a period of four years, these images show the rotating disc of gas & dust around the young star AB Aurigae. Features like “twists” signal the places where #exoplanets could be forming 🪐 More: https://www.eso.org/public/videos/potw2622a/ 🔭 🧪 📹 ESO/A. Boccaletti et al.