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Kick-Off Meeting Agenda Introductions + Grand Vision White Paper Outline + Plan + Organization  Q&A + Discussion Meeting Connection Join the Meeting

If you’re attending the American Astronomical Society’s 2026 Winter Meeting (AAS 247) in Phoenix AZ on Wednesday 7 January, please join us for PhysCOS-organized activities.

If you’re If you’re attending the American Astronomical Society’s 2026 Winter Meeting (AAS 247) in Phoenix, AZ, stop by the PhysCOS table in the NASA booth in the Exhibition Hall, and check out a just-released image that brings the full…

If you’re attending the American Astronomical Society’s 2026 Winter Meeting (AAS 247) in Phoenix, AZ, please join us for PhysCOS-organized activities. And please drop by the PhysCOS table in the NASA booth in the Exhibition Hall!

The 247th AAS meeting (joint with the Historical Astronomy Division) will be held 4-8 January in Phoenix, Arizona at the Phoenix Convention Center. Join us in the exhibit hall at the NASA booth and attend the NASA sessions.

PhysCOS is participating in several activities at the next Winter Meeting of the American Astronomical Society (AAS 247), taking place 4-8 January 2026 in Phoenix, AZ.

Advancing Critical-Angle Transmission (CAT) Grating Technology for High Resolving Power Soft X-ray Spectroscopy Speaker Ralf Heilmann, MIT Abstract High resolving power soft x-ray spectroscopy has been confirmed by the Astro2020 Decadal Survey as a high-priority strategic measurement technique with R…

Hi-ReX SAG will have a kick-off meeting next week on Wednesday, December 17, at 12pm EST (9am PST).

NASA is planning two astrophysics strategic planning workshops in 2026. The Innovation workshop would happen first. The Astro 2030 workshop would happen later, and it would use outputs from the Innovation workshop. These workshops would provide community input into the…

We are pleased to announce the initial release of the Astrophysics Cross-Observatory Science Support (ACROSS) web portal and the associated ACROSS software tools.

We are pleased to announce the release of the Cycle 34 Call for Proposals for Hubble Space Telescope (HST) Observations and funding for Archival Research and Theoretical Research programs.

D.3C X-ray Imaging and Spectroscopy Mission (XRISM) General Observer (GO) solicits proposals for participation in the NASA program for the conduct of space science observations using the X-ray Imaging and Spectroscopy Mission (XRISM) and for related supporting atomic physics investigations.

F.10 Payloads and Research Investigations on the Surface of the Moon (PRISM) solicits development and flight of a science-driven suite of instruments and supporting technology demonstration payloads tailored to complete scientific investigations at a lunar landing destination

The Science Mission Directorate Science Activation Program encourages all people to actively participate in science through activities and resources developed by a collaborative network of project teams drawing on NASA SMD assets (science content, experts, data, etc.).

ROSES-2025 is an omnibus or umbrella solicitation that contains many program element appendices (listed in Tables 2 and 3) and the ROSES-25 Summary of Solicitation (SoS) lays out the backstop rules that apply by default to those program element appendices.

Express your interest in joining the astrophysics program offices and the Cosmic Pathfinders program for a networking lunch event with NASA Astrophysics leadership during the upcoming American Astronomical Society Winter Meeting (AAS 247) in January.

Cosmic Microwave Background Science Analysis Group Meeting

High-Resolution Hard X-ray Spectroscopy with Transition Edge Sensor Microcalorimeter Arrays Speaker Fabian Kislat (University of New Hampshire) Abstract Spectroscopy of X-ray and gamma-ray lines is one of the most powerful tools of high-energy astrophysics. Gamma-ray emission originating from decays of…

LISA Working Group Meeting

The NASA Postdoctoral Program (NPP) November 2025 cycle application deadline has been extended to Friday 19 December 2025 at 6p Eastern (3p Pacific).

The next meeting of the Astronomy and Astrophysics Advisory Committee will take place virtually on Thursday 11 December and Friday 12 December 2025, running from 9a to 5:30p Eastern (6a to 2:30p Pacific) on both days. 

ROSES-2025 Amendment 26 announces the release of final text for this program element, which was previously TBD. Optional Notices of Intent (NOIs) are requested by 19 December 2025, while proposals are due by 30 January 2026.

PhysCOS is participating in several activities at the next Winter Meeting of the American Astronomical Society (AAS 247), taking place 4-8 January 2026 in Phoenix, AZ.

We would like to invite you to our next virtual seminar: Wednesday, December 3rd, at 10:00 am PT / 1:00 pm ET / 6:00 pm BST / 7:00 pm CET. This is an excellent opportunity to stay informed on the…