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American Astronomical Society (AAS)

@aas.org
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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

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American Astronomical Society (AAS) @aas.org · 7h
#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... 🔭
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American Astronomical Society (AAS) @aas.org · 7h
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
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American Astronomical Society (AAS) @aas.org · 28/09/2026
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
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AAS Journal Author Series: Joel Ong (王加冕) on 2026ApJ..1007....6O
YouTube video by AAS
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American Astronomical Society (AAS) @aas.org · 25/09/2026
🔭 #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
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American Astronomical Society (AAS) @aas.org · 24/09/2026
🔭 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...
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American Astronomical Society (AAS) @aas.org · 23/09/2026
🔭 #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...
youtube.com
Creating an iPoster Presentation (Tutorial)
YouTube video by AAS
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American Astronomical Society (AAS) @aas.org · 23/09/2026
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... 🔭
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American Astronomical Society (AAS) @aas.org · 22/09/2026
#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... 🔭
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American Astronomical Society (AAS) @aas.org · 22/09/2026
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...
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AAS Journal Author Series: Sabrina Appel on 2026AJ....172...12A
YouTube video by AAS
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American Astronomical Society (AAS) @aas.org · 21/09/2026
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... 🔭
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American Astronomical Society (AAS) @aas.org · 18/09/2026
🔭 #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...
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American Astronomical Society (AAS) @aas.org · 18/09/2026
🔭 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
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AAS Journal Author Series: Natalí de Santi on 2026ApJ..1007...34D
YouTube video by AAS
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American Astronomical Society (AAS) @aas.org · 18/09/2026
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-... 🔭
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American Astronomical Society (AAS) @aas.org · 17/09/2026
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... 🔭
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American Astronomical Society (AAS) @aas.org · 16/09/2026
🔭 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...
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AAS Journal Author Series: Cassie Sevilla on 2026ApJ..1007...38S
YouTube video by AAS
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American Astronomical Society (AAS) @aas.org · 16/09/2026
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. 🔭
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American Astronomical Society (AAS) @aas.org · 15/09/2026
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. 🔭
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American Astronomical Society (AAS) @aas.org · 14/09/2026
🔭 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...
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American Astronomical Society (AAS) @aas.org · 14/09/2026
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
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American Astronomical Society (AAS) @aas.org · 10/09/2026
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 🔭
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American Astronomical Society (AAS) @aas.org · 09/09/2026
🚨 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...
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American Astronomical Society (AAS) @aas.org · 09/09/2026
🔭 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...
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American Astronomical Society (AAS) @aas.org · 08/09/2026
#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
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American Astronomical Society (AAS) @aas.org · 08/09/2026
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
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AAS Journal Author Series: Grant Donnelly on 2026ApJS..284...44D
YouTube video by AAS
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American Astronomical Society (AAS) @aas.org · 04/09/2026
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... 🔭
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American Astronomical Society (AAS) @aas.org · 03/09/2026
🔭 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
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American Astronomical Society (AAS) @aas.org · 03/09/2026
🎥 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...
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American Astronomical Society (AAS) @aas.org · 03/09/2026
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... 🔭
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American Astronomical Society (AAS) @aas.org · 02/09/2026
#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... 🔭
youtube.com
Creating an iPoster Presentation (Tutorial)
YouTube video by AAS
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American Astronomical Society (AAS) @aas.org · 02/09/2026
#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... 🔭
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American Astronomical Society (AAS) @aas.org · 01/09/2026
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... 🔭
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American Astronomical Society (AAS) @aas.org · 31/08/2026
🔭 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)
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American Astronomical Society (AAS) @aas.org · 31/08/2026
🌍 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
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AAS Journal Author Series: Michelle Hill on 2026PSJ.....7..140H
YouTube video by AAS
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Reposted by American Astronomical Society (AAS)
AAS Press Office @press.aas.org · 31/08/2026
Southwest Research Institute: Study Helps Unravel How the Sun’s Corona Transforms into Solar Wind www.swri.org/newsroom/pre...
swri.org
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
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American Astronomical Society (AAS) @aas.org · 28/08/2026
🔭 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
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American Astronomical Society (AAS) @aas.org · 27/08/2026
#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... 🔭
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American Astronomical Society (AAS) @aas.org · 27/08/2026
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
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Reposted by American Astronomical Society (AAS)
The Astro Society @astrosociety.org · 25/08/2026
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.
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Reposted by American Astronomical Society (AAS)
Max Planck Institute for Solar System Research @mpsgoettingen.bsky.social · 27/08/2026
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. 🔭☀️🛰️
Lakshmi Pradeep Chitta receiving the award certificate.
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American Astronomical Society (AAS) @aas.org · 21/08/2026
🔭 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
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American Astronomical Society (AAS) @aas.org · 20/08/2026
🔭 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...
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American Astronomical Society (AAS) @aas.org · 20/08/2026
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
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American Astronomical Society (AAS) @aas.org · 20/08/2026
🔭 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
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AAS Journal Author Series: Erin Mentuch Cooper on 2026ApJS..284...67M
YouTube video by AAS
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American Astronomical Society (AAS) @aas.org · 18/08/2026
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
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Reposted by American Astronomical Society (AAS)
AAS Press Office @press.aas.org · 18/08/2026
NASA’s Goddard Space Flight Center: Hubble Solves Merger Mystery from Milky Way’s Early Years science.nasa.gov/missions/hub...
science.nasa.gov
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.
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American Astronomical Society (AAS) @aas.org · 17/08/2026
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... 🔭
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American Astronomical Society (AAS) @aas.org · 17/08/2026
#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... 🔭
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American Astronomical Society (AAS) @aas.org · 14/08/2026
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
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AAS Journal Author Series: Eirik Endeve on 2026ApJS..284...40E
YouTube video by AAS
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American Astronomical Society (AAS) @aas.org · 11/08/2026
🔭 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
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AAS Journal Author Series: Taichi Uyama on 2026AJ....171..332U
YouTube video by AAS
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American Astronomical Society (AAS) @aas.org · 10/08/2026
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... 🔭
us06web.zoom.us
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...
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