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    • Gateway - Quartz

      Quartz· 1 day ago

      The Rubin Observatory’s key goal is the 10-year Legacy Survey of Space and Time (LSST), a sweeping, near-constant observation of space. This endeavor will ...

    • What is a light-year? - NASA Science

      NASA· 3 days ago

      Based on the deepest images obtained so far, it’s one of about 2 trillion galaxies in the observable universe. Groups of them are bound into clusters of galaxies, and these ...