🔭 AAS has partnered with @apsphysics.aps.org and other organizations to develop a tool to help you submit unique, personalized comments on harmful proposed changes to federal grants. Please submit a comment by 13 July! www.aps.org/initiatives/...

This sealed Herculaneum scroll could not be opened without being destroyed. Instead, it was virtually unwrapped using high-resolution scanning, surface reconstruction, and ink detection revealing that it contained a philosophical treatise on ethics! 🧪 scrollprize.org/pdf/main.pdf

I was also interviewed on @wtopnews.bsky.social yesterday. Yogi was unavailable for comment. #Wildlife #Bears #Maryland wtop.com/montgomery-c...

Please speak up. Record your objection. This is crucially important.

We're now at two independent lines of evidence for this being an ancient comet: our earlier chemodynamic work, and these lovely isotope studies. Very powerful ☄️

In a new study, measurements taken by research aircraft helped NSF NCAR scientists get a better view of how much carbon is taken up (or released) in various parts of the world. Notably, they found that forests in the tropics take up less carbon than Earth system models typically predict.

Jaxon helped us get through the power outage last night #Caturday

Would have big implications for exoplanets

Planetary Science xkcd.com/3255/

Happy #Caturday! Jaxon is ready for his next rover ride exploration of the neighborhood

New paper! In AAS's The Planetary Science Journal - a case study of Centaur 450P using the JWST. Lots of CO2 & crystalline water-ice in larger dust grains in the coma. We combined the JWST data w/Gemini Obs optical imaging data to constrain a thermal model of 450P's interior. Read more at the link

I used to be the POC for this when at NSF. I esp recommend the introductory remarks that last an hour or so.

NEW: Sometimes stories are about major scientific breakthroughs, about the origin of life, the end of worlds—dramatic epiphanies about the cosmos. And sometimes a flaming asteroid photobombs an erupting volcano. Me @nytimes.com www.nytimes.com/2026/05/26/s...

Thank you, @science.org!

“This work highlights JWST’s potential as a tool for planetary defense. The February 2026 observations … represent the faintest-ever detection of a near-Earth object … JWST can detect objects far fainter than ground-based telescopes”

Astronomers find interstellar comet 3I/ATLAS hiding in images taken by the Vera C. Rubin Observatory before its official discovery. 🧪 🔭

Exciting result from Estela Fernández-Valenzuela et al. In ApJLetters

More fast asteroid rotators found arxiv.org/abs/2605.04784 and iopscience.iop.org/article/10.3...

OK, so I was at the first court hearing over the NCAR lawsuit this morning in Denver. I, uh, am not a legal reporter so bear with me as I try to recap a few things. You can view all the court documents here: www.courtlistener.com/docket/72496...

New paper alert! Colin Chandler et al. in ApJLetters presents photometry, astrometry, and morphology of the interstellar comet 3I/ATLAS from NSF-DOE Vera C. Rubin Observatory obtained 10 days before the comet's discovery. So much to see here! iopscience.iop.org/article/10.3...

I feel like we’re willing to make Pluto a planet again, at least provisionally, if they’re willing to fund astrophysics. I’d say $100 billion/year is reasonable But if you keep cutting our budgets, I swear we’ll keep eliminating them. Hope you like a three planet solar system!

GAO report on DOGE payments access ‘just the tip of the iceberg’

More details on the firing of the National Science Board. The NSF now has no director, deputy director, or board. They have issued almost no new awards in 2026. The plan appears to be to completely destroyed the agency. The details are horrifying and have Russ Vought written all over them.

My story on the NSB terminations:

Breaking: Trump has fired the membership of the National Science Board, which is oversees NSF. I have confirmed separately with multiple now-former members of NSB.

This is the most important thing you will read today – and probably the whole year, honestly. We cannot let the AMOC collapse. For one thing it will make Iceland uninhabitable, and I would really like my children and grandchildren not to become refugees. But the effects will be almost everywhere.

From the ocean to the exosphere, we’re dedicated to advancing Earth system science for the betterment of society– not just on #EarthDay but every day! 🌎 Our experts harness observations, models, instruments, HPC & other resources to ensure NSF NCAR supports cutting-edge research.

Super view of Toronto from the hotel room!

Just released: "Mission Aborted: How NASA Illegally Implemented the President's Budget Request Without Congressional Approval" - Minority Staff Report Prepared for Members of the Committee on Science, Space, and Technology, US House of Representatives democrats-science.house.gov/imo/media/do...

It's Day 2 of our #WeekofAction to #SaveScience, and we are calling our members of Congress! Use the "Phone" tab on our form and you'll get a phone call connecting you to each of your congressional offices: aas.org/reject-2027-... 🔭

Unexpected EHT intern alert! This bird had gotten lost in the fog and appeared at the IRAM 30-m control room door- more than 1,500 meters above its usual habitat. After a brief "internship," it was safely released back into nature the next morning. #M87MOVIE

I'm delighted to point you to a new paper we just got published in Ap J Letters: "Carbonaceous Chondrite-like Compositions for Proposed Captured Trans-Neptunian Objects Justitia and Pompeja" Enjoy! 🔭🧪

I am so thrilled to share this guide to the observations that the #ArtemisII crew will be making during their closest approach to the Moon!! I hope you'll follow along! science.nasa.gov/resource/art...

Hot off the press: “Reversal of Spin: Comet 41P/Tuttle–Giacobini–Kresak” by David Jewitt in The Astronomical Journal

This rarely-seen Glass Octopus was caught by an underwater robot during an expedition off the Phoenix Islands.

Just in: UCAR has filed a lawsuit against NSF, the Commerce Dept, NOAA, and OMB to prevent the dismantling of NCAR, alleging "violations of the Constitution and the Administrative Procedure Act."

I cannot reiterate enough with the frequency and gravity it deserves that every reinfection increases the cumulative risk of Long COVlD. Our PMC survey data (n>2,000) suggest it is rare to avoid LC after 5+ known infections. I'll talk more about that again Sunday night in Becky's Space.

Heartbreaking, really

This will be an instant classic. I'm wondering what paper I can throw together as an excuse to cite it. Although the Arp Atlas was published in the ApJ Supplement in the 60s, you really had to get the book atlas itself, comprising bound photographic prints. 1/n iopscience.iop.org/article/10.3...

CO2 is now affecting the body chemistry of humans If the current levels of emissions are maintained, we could be facing potentially toxic atmospheric compositions within 50 years THIS IS STAGGERING AND DEVASTATING NEWS link.springer.com/article/10.1...

For the final day of #BlackHistoryMonth, let's celebrate the current generation of Black scientists and engineers—including Ashley Walker (@that-astro-chic.bsky.social), researcher of planetary atmospheres and founder of BlackInAstro (www.blackinastro.com)! 🧪🪐⭐🔭 #WomenInSTEM

🎥 2026 AAS Journals Author Series Update! Frank Timmes, AAS Journals Scientific Editor, shares the “why” behind the series — why we create these videos, what the metrics show, how we reached 500+ videos, and how featured articles are selected. 🔭 youtu.be/1_U5WsSXzmU @publishing.aas.org

#BlackWomen #BlackHistoryMonth #Inventors #STEM #STEAM x.com/i/status/202...

Ok I promise this is the last picture of my comet that I'll post but I think this one is my favorite. Image by Beáta Ujvárosi.

A quad-jet to commemorate Ilya Malinin’s Olympic quad-jumps!

Congrats to @wierzchos.bsky.social on this beauty! C/2024 E1 (Wierzchoś) is putting on a show for southern hemisphere observers right now. 📷 by renowned comet photographer Gerald Rhemann. 🔭

🔭 Group picture from the referee training workshop at AAS247. I usually participate but had a conflict this time. Front and center, with a AAS corridors t-shirt, is Frank Timmes who has organized and run all of them to date.

Though less destructive than coronal mass ejections, moderate space weather events like stream interaction regions can still cause geomagnetic storms. Researchers have used machine learning to investigate the drivers behind these events. aasnova.org/2026/01/14/w... 🔭🧪

So happy to have contributed to this effort led by Sarah Greenstreet - now published in #ApJLetters! #AAS247 #TeamAsteroid #RubinObs @vrubinobs.bsky.social

✨ Happy 21st Birthday Europlanet! It's been a long journey since the foundation on 1 January 2005, and we would like to thank you highlighting 21 things we are proud of: www.europlanet.org/21-years-of-...