Come analyze HEASARC, IRSA, and MAST data in the cloud! The Fornax Initiative is now welcoming all interested beta users.
HEASARC
NASA's designated multi-mission astronomy archive for cosmic astronomy datasets for observations in the extreme ultraviolet (EUV), X-ray, and gamma-ray wave bands, as well as for cosmic microwave background (CMB) datasets.LAMBDA
LAMBDA is a multi-mission NASA center of expertise for cosmic microwave background (CMB) radiation research; it provides CMB researchers with archive data from cosmology missions, software tools, and links to other sites of interest.Please wait for the query to run. You will be redirected to the search portal
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Archive
Data discovery and exploration can be done through the interactive Web Portal
(The classic Browse portal remains available.)
API access is available through the Xamin API, the astroquery Heasarc module, or the Virtual Observatory protocols using pyvo. -
Cloud & Platforms
HEASARC@SciServer is an analysis-ready platform where both data and software are available through the browser.
The HEASARC is also part of the NASA Fornax Initiative to build NASA's next generation cloud-based science platform.
HEASARC data are available in the cloud and on SciServer. -
Software
- HEASoft 6.37.0 is now available.
- HEASoft and XSPEC are available as conda packages.
- HEASoft and other high energy software (CAIO, XMM-SAS, Fermitools, Spex etc) are installed and available on SciServer.
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Latest News
- Additional opportunities to propose for NuSTAR time (19 Aug 2026)
NuSTAR observing time can be requested through the IXPE Cycle-4 (up to 500 ks; due September 17th) and XMM-Newton Cycle-26 (up to 1500 ks; due October 9th) proposal opportunities. - HEASoft 6.37 released (13 Aug 2026)
HEASoft 6.37 has been released. This includes xspec v13.0, a major upgrade to xspec with many new features, and new and updated mission- specific data analysis software (IXPE, MAXI, NuSTAR, XRISM, etc.) Please see the 6.37 release notes for details. - NuSTAR Caldb Update (10 Aug 2026)
The NuSTAR FPM caldb was updated to version 20260807. This release includes a new clock correction file, v231, using a new temperature model. Please see the release notes for more details. - NuSTAR Caldb Update (10 Aug 2026)
The NuSTAR FPM caldb was updated to version 20260807. This release includes a new clock correction file, v231, using a new temperature model. Please see the release notes for more details. - AMS-02 All Particle Rates Catalog Released (04 Aug 2026)
This catalog records the incident rates for all particle species obtained with the Alpha Magnetic Spectrometer (AMS-02) experiment on the International Space Station (ISS), a cosmic ray particle detector installed in May 2011, which covers the energy range of ~0.1 GeV - ~2 TeV. The catalog is available in both Browse and Xamin. - IXPE Cycle 4 Now Accepting Proposals (04 Aug 2026)
The due date for IXPE Cycle 4 proposal submission is Sept 17, 2026. Proposals should be submitted via the HEASARC's ARK Remote Proposal System (RPS). For more information about this cycle, please visit the IXPE Cycle 4 Guide for Proposals Page.
- Additional opportunities to propose for NuSTAR time (19 Aug 2026)
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Upcoming Deadlines
- 09/10/2026: Step 1 (Mandatory NOI) Deadline for Habitable Worlds Observatory Precursor Science Investigations (HWO-PSI)
- 09/17/2026: Cycle 4 Deadline for IXPE General Observer
- 09/17/2026: Cycle 9 Deadline for NICER General Observer
- 09/30/2026: Cycle 6 JWST GO Deadline
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Upcoming Meetings
- Binary compact objects on eccentric orbits and their gravitational-wave signatures: 2026 Sep 01 - 06
- The many tones of accretion: 2026 Sep 7 - 11
- IMPRS Summer School on "Cosmic Multiplicity: Evolution and Fate of Binary Stars": 2026 Sep 14 - 18
- HERA 2026: Black holes at different flavours: 2026 Sep 21 - 25