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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.
Query the HEASARC database. Example queries.

Xamin Search Help

  • What ROSAT tables have information on 3c273:
    '3c 273' rosat or 3c273 rosat
  • Find long Chandra exposures:
    chanmaster exposure>10000 status='archived'
  • Tables of cataclysmic variables that include AM Her:
    'AM Her' cataclysmic
  • all of the long ROSAT observations of Messier objects in Scorpius:
    messier rosmaster a.constell='SCO' b.exposure>20000
More information and examples
  • Latest News

    • Swift SC CALDB updated (03 Mar 2026)
      The Swift SC has been updated to version 20260302 to update the clock correction file to v171 ...
    • NuSTAR Caldb Update (02 Mar 2026)
      The NuSTAR FPM caldb was updated to version 20260223. This release includes a new clock correction file, v223, using a new temperature model. Please see the release notes for more details.
    • NuSTAR Caldb Update (02 Mar 2026)
      The NuSTAR FPM caldb was updated to version 20260223. This release includes a new clock correction file, v223, using a new temperature model. Please see the release notes for more details.
    • INTEGRAL Legacy Confernece (23 Feb 2026)
      The first INTEGRAL Legacy Conference will be organized by CEA and Paris-Saclay Universe Sciences Observatory on 19-23 October 2026 at the Institut Pascal on the Paris-Saclay University Campus.
    • NuSTAR Caldb Update (11 Feb 2026)
      The NuSTAR FPM caldb was updated to version 20260210. This release includes a new clock correction file, v222, using a new temperature model. Please see the release notes for more details.
    • NASA Summer Internships - Deadline Feb 27, 2026 (4 Feb 2026)
      NASA's Office of STEM Engagement (OSTEM) paid internships allow colleg-level students to contribute to the agency's mission to advance science, technology, aeronautics, and space exploration. OSTEM internships offer students an opportunity to gain practical work experience while working side-by-side with mentors who are research scientists, engineers, and individuals from many other professions. Internships may be full-time or part-time, at a NASA center or facility. Join our NASA team and gain valuable on-the-job experience, build your resume, and strengthen your career readiness. We offer three sessions annually, so visit our website often for opportunities.
  • Upcoming Deadlines

    • 03/10/2026: Cycle 9 Deadline for TESS General Investigator
    • 03/18/2026: Cycle 28 Chandra GO Deadline
    • 03/20/2026: Step 2 Deadline for Collaborative Opportunities for Mentorship, Partnership, and Academic Success in Science (COMPASS)
    • 04/02/2026: Step 2 Deadline for Astrophysics Pioneers Proposal
  • Upcoming Meetings

    • 60th Rencontres de Moriond on Very High Energy Phenomena in the Universe: 2026 Mar 15 - 22
    • BlackHolistic 2026: black holes, accretion and jets across the mass spectrum: 2026 Mar 23 - 27
    • THESEUS Conference 2026: 2026 Mar 24 - 26
    • Massive Black Hole Spin workshop: 2026 Apr 21 - 24