Beautiful new results from my @stsci.edu colleagues Kielan Hoch and collaborators (on here: @mattkenworthy.bsky.social, @offallingstars.bsky.social , @bmacastro.bsky.social , @balmer.bsky.social) with JWST + MIRI www.theguardian.com/science/2025...

An absolutely phenomenal result from this team! Using brand new LSSTCam data to precover 3I/ATLAS. Astonishing stuff, and a sign of excellent things to come from @vrubinobs.bsky.social

New paper on arXiv, analyzing Rubin Observatory data of interstellar object 3I/ATLAS. This is the first science paper with data from LSSTCam!!!!!

arxiv.org/abs/2507.13409

Ohhhhh 👀👀👀

Did something smack into Saturn a few days ago?

Amateur astrophotographers - check your data!

🔭🧪🪐

Today, *every* living prior leader of NASA's science directorate have released a joint letter condemning the proposed cuts to NASA science. These individuals every administration from Reagan to Biden, and all believe these cuts are insanely destructive: www.planetary.org/press-releas...

3I/ATLAS now recovered back to May 22 (mag 20.5 in g) in ZTF imagery, thanks Quanzhi Ye. In the latest MPEC

Simulation of Images of Protoplanetary Disks After Collision with Free-floating Planets
astrobiology.com/2025/07/simu... #astrobiology #exoplanet #astronomy #StellarCartography

Here's I3/ATLAS from the 0.8m at Mt Kent as of 1 hr ago. The clip is a 50-min sequence.

Mielenkiintoinen väikkäri: ”Oletus siitä, että niukkuudella olisi aktivoiva tai tehostava vaikutus on ristiriidassa sen tiedon kanssa, että niukkuus johtaa keskittymään päivästä toiseen pärjäämiseen, sanoo väitöskirjatutkija Elina Turunen Helsingin yliopistosta.” www.sttinfo.fi/tiedote/7092...

we’re observing uranus tonight as it passes in front of a fairly bright star. the plot in the upper left shows the star passing behind several rings. @mmtobservatory.bsky.social

SPHEREx, NASA’s latest space observatory, is targeting a March 8 liftoff, and the agency’s PUNCH heliophysics mission is sharing a ride.

Here’s what to expect during launch and beyond: spherex.caltech.edu/news/cosmic-...

Random infrared (WISE) light curve of the day. Gaia: 4661246058487231616 Simbad: IRAS 05063-6908 #VariableUniverse

First first-author paper by my PhD researcher Andras Haris. Not formally accepted yet, but major hurdles cleared.

We are studying stars by looking at planets transit in front of them!

Here we present 105 candidates for starspot occultation events by six planets.
arxiv.org/abs/2502.18129

🔭 Interested in exoplanet and brown dwarf atmospheres? 🪐Just want to come visit Ireland this summer? Submit an abstract to our symposium at #EAS2025, New Frontiers in Characterising Gas-Giant Exoplanets and Brown Dwarfs! The deadline is less than two weeks away!

eas.unige.ch/EAS_meeting/...

“Life in the Slow Lane: A Search for Long Term Variability in ASAS-SN” - Petz and Kochanek show the power of all sky surveys over many years - some absolutely fascinating behaviour in these light curves, from dust generation to curious eclipsing systems. 🔭🪐 #astrodon

Just a random WISE /NEOWISE infrared light curve of BL Hyi. Sorry for the curve fit.

Brown dwarfs have complex cloud layers that play a major role in shaping the thermal structure of their atmospheres. One of the best ways to understand these unique objects is to study their clouds. We do that with telescopes like JWST combined with computational modeling. (1/2)

Hon, Rappaport et al. on “A Disintegrating Rocky Planet with Prominent Comet-like Tails Around a Bright Star” with an orbital period of 1.27 days, this is a fascinating fourth example of this type of object. The eclipses vary from one orbit to another. 🔭🪐 #astrodon