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Loading contentNASA's archive for high-energy astrophysics — the X-ray and gamma-ray data of missions like Chandra, Swift, and Fermi — a central resource for the study of the most energetic objects in the universe.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.