American Astronomical Society (AAS)
@aas.org
The mission of the American Astronomical Society is to enhance and share humanity’s scientific understanding of the universe as a diverse and inclusive astronomical community. aas.org
#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... 🔭
Creating an iPoster Presentation (Tutorial)
YouTube video by AAS
youtube.com
#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... 🔭
🔭 Our new policy blog post shows that the number of astronomical sciences research awards made by NSF has decreased by 57% since last year, corresponding to a 51% reduction in funding. (1/2)
🌍 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
AAS Journal Author Series: Michelle Hill on 2026PSJ.....7..140H
YouTube video by AAS
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Southwest Research Institute: Study Helps Unravel How the Sun’s Corona Transforms into Solar Wind www.swri.org/newsroom/pre...
SwRI Study Helps Unravel How the Sun’s Corona Transforms into Solar Wind | Southwest Research Institute
Up-close study of heliospheric current sheet provides important information about its composition
swri.org
🔭 Join us in Salt Lake City (10-14 January 2027) for the 249th AAS meeting! Early registration and housing are open — so start planning. Be sure to check out: ✨ Dependent Care Grants ✨ KiddieCorp Children's Program ✨ Discounted hotel group rates aas.org/meetings/aas249 Photo: Visit Salt Lake
#AAS249 Abstract submission is open! 📢 New this meeting: When you submit your abstract, you'll choose between an iPoster or a paper poster. Students who enter the Chambliss Competition must submit poster abstracts by the 30 September deadline. Only iPosters can compete. aas.org/meetings/aas... 🔭
New AAS Journal Author Series video! Nathan Whitsett & Tansu Daylan (Washington University) discuss star–planet magnetic interactions — planets triggering flares as they sweep through their host star's Alfvén surface near periastron. 🔭 youtu.be/JVJXGe5x3ks
It's the final countdown! We'd like to thank our remaining sponsors of Astronomy@250, the @aas.org and the Chabot Space & Science Center. We are thrilled to have the AAS Director of Education Programs, Dr. Tom Rice, moderating "Why Astronomy? Imagining the Next 250 Years" on 8/29 at 9am PT/noon ET.
Congratulations! At the 57th annual meeting of the @aas.org #SolarPhysicsDivision in Baltimore, #mpsgoettingen scientist Lakshmi Pradeep Chitta was awarded this year’s #KarenHarveyPrize. His research has helped to shape our understanding of the dynamic nature of the #Sun’s #corona. 🔭☀️🛰️
🔭 AAS is hosting a Virtual Grad Admissions Fair — and it's FREE to attend. 📅 Wednesday, 16 September, 3:00–5:00 pm ET Please note: Registration is limited to AAS undergraduate & SPS affiliate members only. Spots are limited. Reserve yours before 9 September. 👉 ow.ly/1vml50ZvRIU
🔭 DPS is seeking enthusiastic volunteers (including social media volunteers) to assist with the meeting in Spokane (25-30 October). We welcome applications from undergrads, grads, postdocs & and local amateur astronomers. #DPS2026 Apply by 11 September: www.cognitoforms.com/AAS5/DPS58Vo...
Astronomy@250 Conference 🔭 Attend virtually from anywhere in the world on 27-29 August. Three days with some of the top names in astronomy, five programming tracks & networking w/ larger space & astro community. AAS is glad to be an event sponsor! astrosociety.org/events-home/... @astrosociety.org
🔭 NEW VIDEO! Erin Mentuch Cooper (UT Austin) breaks down HETDEX's Public Data Release 1 — 430K+ spectra mapping Lyα-emitting galaxies across 87 deg² of sky to help constrain dark energy at cosmic noon. youtu.be/QGXpyqC-j78
AAS Journal Author Series: Erin Mentuch Cooper on 2026ApJS..284...67M
YouTube video by AAS
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The Scientist Network for Advancing Policy (SNAP) is launching a new mini-grant program to support new university-based science policy student organizations as they get off the ground. Applications are due 31 August 2026. aas.org/posts/news/2... 🔭 @snapcoalition.org
NASA’s Goddard Space Flight Center: Hubble Solves Merger Mystery from Milky Way’s Early Years science.nasa.gov/missions/hub...
Hubble Solves Merger Mystery From Milky Way’s Early Years - NASA Science
New Hubble data shows definitive evidence of a dwarf galaxy merging with the young Milky Way in the earliest phases of its evolution.
science.nasa.gov
AAS Names C. David Gammel as Next Chief Executive Officer The American Astronomical Society (AAS) today announced that C. David Gammel will become the Society's next Chief Executive Officer, with his tenure expected to begin in early December 2026. aas.org/press/aas-na... 🔭
#AAS249 Call for Splinter Meetings! Submit your proposals for the 249th AAS meeting, to be held in Salt Lake City, 10–14 January. Splinter Meetings are science or programmatic meetings that do not fit the definition of a Special Session. Proposals are due by 17 September. aas.org/meetings/aas... 🔭
New AAS Journals Author Series video: Eirik Endeve (ORNL/UT Knoxville) breaks down neutrino-transport algorithms in thornado & FLASH-X, advancing core-collapse supernovae simulations. 🔭 youtu.be/gMOzUe243_Q
AAS Journal Author Series: Eirik Endeve on 2026ApJS..284...40E
YouTube video by AAS
youtu.be
🔭 New AAS Journal Author Series! Taichi Uyama (Astrobiology Center/NAOJ) discusses HIP 53005 C, a low-mass companion ~62 au from its host star. It looks like it's near the hydrogen-burning limit (~80 M_Jup) — but orbital fitting suggests a surprising ~185 M_Jup. youtu.be/-lH0zXHtFjg
AAS Journal Author Series: Taichi Uyama on 2026AJ....171..332U
YouTube video by AAS
youtu.be
Webinar: DHS's Duration of Status Rule 📅 Wed, 12 Aug, 12:00 pm ET DHS replaced "duration of status" with fixed admission periods for international students, postdocs & researchers. AIP & Institute for Progress panelists will cover key provisions & impacts. us06web.zoom.us/webinar/regi... 🔭
Welcome! You are invited to join a webinar: Understanding DHS's Duration of Status Rule. After registering, you will receive a confirmation email about joining the webinar.
On July 17th, the U.S. Department of Homeland Security (DHS) published a final rule that replaces the longstanding duration of status framework with fixed periods of admission for certain nonimmigrant...
us06web.zoom.us
The AAS is pleased to announce that applications are now open for the Harlow Shapley Visiting Lectures Program. Two parallel opportunities are available: one for prospective Shapley Lecturers & another for organizations to host astronomers in 2027. Deadline: 18 September aas.org/posts/news/2... 🔭
Call for Applications: 2027 Shapley Visiting Lectures Program
The AAS announces its call for applications for the Harlow Shapley Visiting Lectures Program. We are seeking astronomers and host institutions to participate in 2027!
aas.org
🔭 DPS is seeking enthusiastic volunteers (including social media volunteers!) to assist with the meeting in October. We welcome applications from undergrads, grads, postdocs & and local amateur astronomers. Apply by Friday, 21 August: www.cognitoforms.com/AAS5/DPS58Vo... 🔭 #DPS2026
🎥 Do small black holes "downsize" like big ones do? Wen-Juan Liu (Yunnan Observatories, CAS) discusses her study of 930 intermediate-mass black hole AGNs from SDSS DR17 — extending IMBH redshift coverage to z≤0.57 & revealing a "downsizing" trend in accretion activity. youtu.be/XuDQcKP-6KQ 🔭
Thinking about grad school? AAS is hosting a free Virtual Grad Admissions Fair! 📅 Wed, 16 Sept, 3–5 pm ET 💻 100% virtual & FREE 🎓 20+ depts including Columbia, Michigan, San Diego State Registration is limited to AAS undergrad & SPS affiliate members. Register by 9 Sept: aas.org/meetings/gra... 🔭
⏰ Last call! Special Session, Workshop, and Town Hall proposals for #AAS249 are due TODAY — Monday, 3 August, 11:59 pm ET. Have an idea for the program? Submit it before time runs out. aas.org/meetings/aas... 🔭
Are you ready for it? Our virtual conference, that is! Registration is now open and you don't want to miss our five programming tracks, opening night event, prestigious speaker lineup, and celebrating 250 years of astronomy in the United States and beyond. 🚀🌎 1/3
🔭 New video! Kamber Schwarz (MPIA) discusses observations of H¹³CO⁺ & C¹⁸O toward 3 Class 0 protostars, finding ionization rates 100s–1000s× higher than the diffuse ISM — evidence that ionization chemistry is most efficient in the earliest protostellar stage. youtu.be/STshrLryUkg
AAS Journal Author Series: Kamber Schwarz on 2026AJ....171..324S
YouTube video by AAS
youtu.be
#AAS249 Special Session, Workshop, and Town Hall proposals are due Monday, 3 August by 11:59 pm ET. AAS meetings feature a variety of sessions and content, and we rely on proposals from the community to build the meeting program. aas.org/meetings/aas...
