

As Hubble’s third repair mission unwinds, ground controllers send commands and instructions to the telescope while monitoring data from the observatory to check that it continues to function correctly. When this picture was taken, in 1999, command and control operations for Hubble were run from the Space Telescope Operations Center at NASA’s Goddard Space Flight Center in Greenbelt, Md. Today command and control is run mainly from the Space Telescope Science Institute in Baltimore, Md.
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IMAGE CREDIT: NASA