American Astronomical Society (AAS)

Register and Submit Abstracts Now for the 2027 IAU General Assembly in Rome The 33rd International Astronomical Union (IAU) General Assembly will be held 10–19 August 2027 in Rome, Italy. Registration is now open. ow.ly/rl2A510118P 🔭

#AAS249 AAS offers support for attendees w/family care needs. 1️⃣ Dependent Care Grants: Apply for subsidized dependent care, whether on-site or back home. Deadline: 2 Nov 2️⃣ On-Site Childcare: Run by KiddieCorp, experts with w/41 years running programs at conventions. aas.org/meetings/aas... 🔭

Build Your Peer Review Skills at #AAS249 If you’d like to feel more confident the next time you’re asked by an editor to peer review a research article, consider applying to attend the upcoming AAS Peer Review Training Workshop in Salt Lake City on 10 January. aas.org/posts/news/2... 🔭

🎥 New AAS Journal Author Series: Sam Cutler & Luke Robbins (Tufts University) on color gradients in massive quiescent galaxies at z>3 using JWST/MINERVA. Gradients ease some model tensions, but IFU spectroscopy is needed. ▶️ youtu.be/gGphI1t-1X0 🔭 @publishing.aas.org

University of Michigan: Hubble Observations of Nearby Starburst Galaxies Reveal That Supernovae May Not Have Ushered In the Reionization of the Early Universe news.umich.edu/shining-new-...

New AAS Journal Author Series: Adeene Denton (Southwest Research Institute) on how rock strength changes the Moon-forming giant impact. In her simulations, a hot, solid Theia can leave an intact Moon, while a colder, stronger Theia makes the classic debris disk. www.youtube.com/watch?v=aWR6... 🔭

Evaluation of Astronomy Education Projects — What, Why and How? In this AAS Education Committee blog post, guest author Linda Strubbe shares how evaluation can strengthen astronomy education projects. aas.org/posts/news/2... 🔭 @education.aas.org

Apply for IAU Membership in 2027 by 15 December The International Astronomical Union (IAU) encourages applications for new Individual & Junior members to be admitted in 2027. More info about member qualifications, application process & timeline: aas.org/posts/news/2... 🔭

#AAS249 Call for Late Abstracts To share your latest research with an audience of scientists at all career stages, submit your late abstract (for iPosters only) in one of more than 50 topical categories by 11:59 pm ET on Monday, 26 October. More details: ow.ly/5GQq50ZXlIl 🔭

How did an impact change the way water moved through the Murchison meteorite? Romy Hanna (UT Austin) used high-res X-ray CT and xenon gas to find out. Watch her AAS Journal Author Series talk: www.youtube.com/watch?v=9Luk... 🔭 @publishing.aas.org

#AAS249 AAS offers support for meeting attendees with family care needs. Dependent Care Grants: Apply for subsidized dependent care, whether on-site or back home. Deadline: 2 Nov On-Site Childcare: Run by KiddieCorp, experts with 41 years running programs at conventions. aas.org/meetings/aas... 🔭

🎥 New AAS Journal Author Series! Rimpei Chiba (U. Tokyo/U. Toronto) shows that the "tree-ring" structure in the Milky Way bar's resonance survives spiral arms, Sagittarius encounters & noise, a robust signal of bar spin-down and a dark matter halo. www.youtube.com/watch?v=dnuz... 🔭

AAS member Francis Halzen has been named the recipient of the Nobel Prize in Physics 2026 "for decisive contributions to the IceCube Neutrino Observatory and the discovery of high-energy neutrinos of astrophysical origin." aas.org/press/aas-me... 🔭

🔭 The American Physical Society and the AAS are pleased to welcome Jeff Feng as a Civic Science Fellow this fall. This fellowship will focus on strengthening public engagement across the physical sciences. aas.org/posts/news/2... @apsphysics.aps.org

Don't miss your chance to be part of #AAS249. TODAY is the deadline to submit an abstract for the 249th AAS meeting. If you'd like to present — via a talk or a poster — your abstract must be submitted by the end of today, 5 October, at 11:59 pm ET. aas.org/meetings/aas... 🔭

🎥 New AAS Journal Author Series! Gökhan Yücel (Akdeniz Univ) on ET Cru: spectral disentangling pins down masses to ~1.3% and reveals extreme carbon depletion and nitrogen enrichment in the donor, direct evidence of CNO-cycle exposure. www.youtube.com/watch?v=b_-n... 🔭 @publishing.aas.org

#AAS249 Your research, center stage in Salt Lake City. Planning to submit an iPoster for the 249th AAS meeting in Salt Lake City? The abstract deadline has been extended to 5 October. Students entering the Chambliss competition, your abstract is due by the same deadline. aas.org/meetings/aas... 🔭

When Science Policy Reaches the Classroom Matt Guthrie, a participant in the Fall 2026 AAS and American Association of Physics Teachers Congressional Visits Day, reflects on his experience engaging in advocacy. aas.org/posts/news/2... 🔭 @policy.aas.org

What happens when stars don't act like the Sun? 🌟 In our latest #AASJournals Author Series, Joel Ong (王加冕) explains new "structure inversion" techniques using natural stellar coordinates instead of physical radius — solving key asteroseismology problems. youtu.be/SaNJWscwvzE 🔭 @publishing.aas.org

🔭 #AAS249 Meet plenary speaker Mary Anne Limbach (U of Michigan) — research focuses on discovering & characterizing planetary systems in unexplored regimes, including cold giant planets, planets around white dwarfs, exomoons & exorings. Join us in Salt Lake! aas.org/meetings/aas249/registration

🔭 Deadline Extended! Applications for the Harlow Shapley Visiting Lectures Program are now welcome through Friday, 2 October. We are seeking astronomers and host institutions to participate in 2027. aas.org/posts/news/2...

🔭 #AAS249 Planning to submit an iPoster for the 249th AAS meeting in Salt Lake City? Good news: the abstract deadline has been extended to 5 October! AAS member @drgamble21.bsky.social walks you through it step by step in this short tutorial: www.youtube.com/watch?v=PlGv...

IAU General Assembly 2027: Deadlines and Event Highlights The 33rd International Astronomical Union (IAU) General Assembly will be held 10–19 August 2027 in Rome, Italy. Abstract submissions and grant applications are due 15 January 2027. aas.org/posts/news/2... 🔭

#AAS249 The AAS invites organizations to participate in the Grad Student/REU Fair at the 249th AAS meeting in Salt Lake City, Utah. 📅 Sunday, 10 January 2027 🕠 5:30–7:00 pm MT Last year’s event SOLD OUT before the deadline! Reserve your space by 11 December. aas.org/meetings/aas... 🔭

New #AASJournals Author Series video! 🔭 Sabrina Appel (AMNH/Rutgers) discusses Torch, a framework combining FLASH + AMUSE to simulate star cluster formation. Her work adds protostellar jet feedback & shows jets slow star formation, even in massive clouds. Watch: www.youtube.com/watch?v=1GM2...

This could be you in Salt Lake City. #AAS249 Abstract deadline is 30 Sep by 11:59 pm ET. When you submit your abstract, you'll be asked to choose between an iPoster or a paper poster. Students entering the Chambliss competition, your abstract is due by the same deadline. aas.org/meetings/aas... 🔭

🔭 #AAS249 Plenary Speaker: Yao-Yuan Mao (茅耀元) Assistant Professor at Univ of Utah, Mao studies low-mass galaxies — developing new observational methods to find these faint systems and using them to probe galaxy evolution & the nature of dark matter. Early reg closes 12 Oct: aas.org/meetings/aas...

🔭 New AAS Journal Author Series video! Natalí de Santi (UC Berkeley/LBNL/Flatiron) discusses training a graph neural network on just galaxy 3D positions + velocities to estimate Ωₘ with ~10% precision — and how it generalizes across totally different simulations. 🔗 youtu.be/I_ouavsYGeA

AAS and AAPT members were on Capitol Hill earlier this week advocating for robust federal support for the sciences and STEM education. Amplify their efforts by writing or calling your members of Congress today. aas.org/reject-2027-... 🔭

JWST UNCOVER Collaboration to Receive 2027 Berkeley Prize The JWST UNCOVER collaboration will receive the 2027 Lancelot M. Berkeley − New York Community Trust Prize for Meritorious Work in Astronomy for its work revealing the contents of the distant universe. aas.org/press/jwst-u... 🔭

🔭 What causes luminous fast blue optical transients? Cassie Sevilla (Cornell) walks through 6 LFBOTs from ZTF survey data, radio/X-ray follow-up, and what it reveals about their mysterious progenitors. New AAS Journal Author Series video ⬇️ www.youtube.com/watch?v=Vi8v...

Guess who missed National Voter Registration Day (it was yesterday)! 🫣 We were busy visiting members of Congress on the Hill for Congressional Visits Day. 🎉 Good news: you can still register or update your registration anytime at vote.gov. 🔭

On the Hill today with AIP and AAPT, advocating for #astronomy and physics education! Every year the AAS brings volunteers to Washington, DC to advocate for their science and the priorities of the astronomical science community with members of Congress. 🔭

🔭 From @aasnova.org: We’re excited to welcome Alexia Kubas and Lucas Brown to the team as AAS Media Fellows for 2026–2027! aasnova.org/2026/09/14/w...

The American Astronomical Society today announced that Dr. Emily Levesque (University of Washington) has been confirmed as the next Editor in Chief of the AAS journals. 🔭https://aas.org/press/emily-levesque-named-editor-chief-aas-journals @publishing.aas.org

New AAS Guidelines on AI Use in Academic Publishing AAS Publications Committee is sharing results of a community request: guidelines for use of AI tools, including large language models, in preparing/reviewing manuscripts submitted to AAS journals. journals.aas.org/policies 🔭

🚨 Last call for registrations! AAS Virtual Graduate Admissions Fair is happening 16 September, 3:00–5:00 pm ET, with over 30 departments ready to participate. Registration closes TODAY, Wednesday, 9 September. Don't miss out. There are a few spots remaining. aas.org/meetings/gra...

🔭 DPS is seeking enthusiastic volunteers (including social media volunteers) to assist with the meeting in Spokane. We welcome applications from undergrads, grads, postdocs & and local amateur astronomers. #DPS2026 Applications due by Friday, 11 September: www.cognitoforms.com/AAS5/DPS58Vo...

#AAS249 Excited to welcome Anna Ho to the stage! Her work has revealed ultra-bright, short-duration optical flaring tied to a new class of fast blue optical transients — reshaping how we understand the lives & deaths of stars. 🔭 Early reg closes 12 October: aas.org/meetings/aas249/registration

New #AASJournals Author Series video! Grant Donnelly (U. Toledo) discusses SIMLA, a new archive of mid-IR spectral cubes from Spitzer/IRS mapping-mode data. Synthetic photometry matches WISE within a few percent! 🔭 📺 www.youtube.com/watch?v=YKU0... @publishing.aas.org

The Astro Society has named AAS Past President Dara Norman the 2026 Arthur B.C. Walker II Award recipient. The award honors an African American scientist for substantial research contributions & commitment to promoting diversity & inclusion in STEM. Congratulations, Dara! aas.org/posts/news/2... 🔭

🔭 Meet #AAS249 plenary speaker: Rebecca Charbonneau! Historian at AIP, SETI Institute Fellow, and NRAO scientist studying the history of radio astronomy & technosignatures. Don't miss her talk in Salt Lake City — early registration closes 12 Oct. aas.org/meetings/aas... @rebeccacharbon.bsky.social

🎥 New #AASJournals Author Series video! Laura Congreve Hunter (Dartmouth) discusses her study on atomic gas turbulence timescales in low-mass galaxies, and what it reveals about the star formation–ISM connection. 🔭 Watch: www.youtube.com/watch?v=gmHS...

Call for Applications: 2027 Shapley Visiting Lectures Program Applications for the Harlow Shapley Visiting Lectures Program are welcome through 18 September 2026. We are seeking astronomers and host institutions to participate in 2027! aas.org/posts/news/2... 🔭

#AAS249 Planning to submit an iPoster for the 249th AAS meeting in Salt Lake City? Now's the time to start preparing! AAS member Dr. Ronald Gamble provides step-by-step instructions in this short tutorial. Abstract deadline: 30 September www.youtube.com/watch?v=PlGv... 🔭

#AAS249 Splinter Meeting proposals are due soon! Got an idea for a science or programmatic meeting that doesn't fit the Special Session format? Submit now for the 249th AAS meeting in Salt Lake City. ⏰ Deadline: Thursday, 17 September aas.org/meetings/aas... 🔭

The AAS welcomes Charlie Mace to the staff as the next John N. Bahcall Public Policy Fellow. Charlie earned a PhD in Physics from The Ohio State University, focusing on numerical simulations of galactic evolution with the goal of constraining the nature of dark matter. aas.org/posts/news/2... 🔭

🌍 New AAS Journal Author Series! Michelle Hill (UC Riverside/Stanford) on the "Smaller Than Earth" Habitability Model — how small can a rocky planet be (1.0–0.5 R⊕) & still hold onto its atmosphere for gigayears? Turns out ≥0.8 R⊕ is the sweet spot. 🎥 youtu.be/eGO_MT0UA-o 🔭 @publishing.aas.org