The Center for Astrophysics | Harvard & Smithsonian
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GALEX Completes Four Star-Studded Years in Space

  • The spiral galaxy M81 shines brilliantly in this ultraviolet photograph from NASA's GALEX satellite. Young stars glow blue in the galaxy's spiral arms, while older, mature stars give the galaxy's center its yellow tint.

    The spiral galaxy M81 shines brilliantly in this ultraviolet photograph from NASA's GALEX satellite. Young stars glow blue in the galaxy's spiral arms, while older, mature stars give the galaxy's center its yellow tint.

    NASA/JPL-Caltech/J. Huchra (CfA)

    Low Resolution Image

    High Resolution Image