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We are in the process of porting over all of the pages. If you can't find something you are looking for, check the legacy site

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Maximizing scientific accessibility and productivity of astronomical data.

The Mikulski Archive for Space Telescopes (MAST) is a NASA funded project. We provide a variety of astronomical data archives focused on scientific data sets in the optical, ultraviolet, and near-infrared parts of the spectrum. MAST is located at the Space Telescope Science Institute (STScI).

Access MAST Data

Missions

See All Of MAST's Missions and Data Collections!

HST - Hubble Space Telescope

JWST - James Webb Space Telescope

TESS - Transiting ExoplanetSurvey Satellite

High Level Science Products

News

Read our Newsletters

We have all MAST Archive News articles published since 1997. They include information about new data products available on our archive, new or improved site features for our numerous web pages, or general information highlighting topics you might not be familiar with.

Latest MAST News

HLSP Update: Version 2.1 catalogs from the Hubble Legacy Fields (HLF) are now available. Relative weight threshold is reduced, increasing the F850LP filter coverage from 343 to 525 sq. arcmin. See the “Catalogs” section on the HLSP page at MAST: archive.stsci.edu/prepds/hlf/

You’re looking at some of the first data from Hubble’s ULLYSES program: The spectrum of a high-mass star in the Small Magellanic Cloud. Hubble’s new observations in the far-UV (shown in purple) show the star’s strong winds. These data will be available soon through @MAST_News

Mission Update: Sector 15 re-processing ingest is complete. While ingest happens, this Sector will be unavailable in MAST services. Sector 16 re-processing is underway. Monitor this page as Sector 16 DR30 updates are made: outerspace.stsci.edu/display/TESS/T…

Anyone looking for panchromatic model spectra of some M stars from young to old? HAZMAT model spectra are being stored at MAST: stdatu.stsci.edu/hlsp/hazmat. Modeling effort led by @speacock3. (Also, thanks to @ScottWFleming for getting the site up and looking good!) More to come...

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Maximizing the scientific accessibility and impact of astronomical data

Welcome to the Beta version of the new MAST website!

Missions

High Level Science Products

News

Latest MAST News