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The High Energy Astrophysics Science Archive Research Center (HEASARC) is the
primary archive for NASA's (and other space agencies') missions studying
electromagnetic radiation from
extremely energetic cosmic phenomena ranging from
black holes to the Big Bang. Since its
merger with the Legacy Archive for Microwave Background Data Analysis
(LAMBDA) in 2008, the HEASARC
archive contains data
obtained by high-energy astronomy missions observing in the
extreme-ultraviolet (EUV), X-ray, and gamma-ray bands, as well as data from
space missions, balloons, and ground-based facilities that have studied the
relic cosmic microwave background (CMB) radiation in the sub-mm, mm and
cm bands.
The HEASARC is a member of the NASA Astronomical
Virtual Observatories (NAVO) where we work with other NASA archives to
ensure comprehensive and consistent VO access to NASA mission datasets.
Users may now query the HEASARC's catalogs using VO-enabled services and
specialized tools. This page describes
how to get to the HEASARC VO-enabled
services and provides information on other HEASARC VO activities.
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Latest News
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- NuSTAR Cycle 12 Now Accepting Proposals (21 Dec 2025)
The due date for NuSTAR Cycle 12 proposal submission is Jan 29, 2026. Proposals should be submitted via the HEASARC's ARK Remote Proposal System (RPS). For more information about this cycle, please visit the NuSTAR Proposal Guide Page.
- NuSTAR Caldb Update (19 Dec 2025)
The NuSTAR FPM caldb was updated to version 20251215. This release includes a new clock correction file, v219 using a new temperature model. Please see the release notes for more details.
- Chandra CALDB 4.12.3 installed at the HEASARC (18 Dec 2025)
The Chandra CalDB 4.12.3 is now installed in and available from the HEASARC CALDB. Chandra 4.12.3 was released by the CXC on December 16, 2025.
- Fermitools 2.5.1 Released (18 Dec 2025)
The latest version, 2.5.1, of the Fermi analysis software, Fermitools, was released on December 18, 2025
- XRISM Cycle 3 call for GO proposals: (10 Dec 2025)
The XRISM Cycle 3 call for GO proposals has been announced and is now open. The due date for XRISM Cycle 3 proposal submission is February 27th, 2026. See the Proposals and Tools webpage for more information.
- NASA PostDoctoral Fellowship - Deadline Extended (8 Dec 2025)
The NASA Postdoctoral Program (NPP) November 2025 cycle
application deadline has been extended to Friday 19 December 2025 at
6p Eastern (3p Pacific). The NASA Postdoctoral Program offers US and international
scientists the opportunity to advance their research while
contributing to NASA's scientific goals. The NPP supports fundamental
science; explores the undiscovered; promotes intellectual growth; and
encourages scientific connections. Selected by a competitive
peer-review process, NPP Fellows complete one- to three-year
Fellowship appointments that advance NASA's missions in Earth science,
planetary science, heliophysics, astrophysics, biological and physical
science, aeronautics and engineering, human exploration systems, space
operations, space technology, and astrobiology. Search for NPP
research opportunities here: NPP Research Opportunities.
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HEASARC News
Upcoming Dates & Deadlines
Upcoming Astronomy Meetings
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