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As of April 13, the archive is now using the STScI Single Sign-On (SSO) identity manager. To check on your account click here. For more information about how accounts were transitioned click here.

The Mikulski Archive for Space Telescopes (MAST) is a NASA funded project to support and provide to the astronomical community a variety of astronomical data archives, with the primary focus on scientifically related data sets in the optical, ultraviolet, and near-infrared parts of the spectrum. MAST is located at the Space Telescope Science Institute (STScI).

link to PortalSearch Using the MAST Data Discovery Portal
  • MAST Cross-Mission Search
  • Integrated 3D All-Sky Viewer
  • Access to Data from other Archives
  • User's Guide



Note: STScI may provide links to Web pages that are not part of the STScI, AURA, NASA, or ESA domain. These sites are managed by organizations, companies or individuals not under our control, and neither STScI, AURA, NASA, nor ESA are responsible for the information or links you may find there. We provide these links as a convenience and the presence of these links is not an endorsement of the site.