• instrument set against black background.
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    This instrument, called the FOS (Faint Object Spectrograph), spent almost seven years in space. It was part of the Hubble Space Telescope when the Hubble was placed in orbit in 1990. In 1994, FOS provided confirming evidence for a massive black hole in the giant elliptical galaxy M87.

  • instrument set against black background.

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Smithsonian's National Air and Space Museum

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