The Hubble was launched in 1991. It cost $1.5 billion to build and launch. It weighs 24,500 pounds, is 43.5 feet long and 14 feet wide. The Hubble orbits Earth once every 97 minutes, traveling at ...

The Hubble Space Telescope as seen from the Space Shuttle Discovery in December 1999. Credit: NASA In the summer of 1995, Robert Williams, then director of the Space Telescope Science Institute, which ...

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The Hubble telescope has been orbiting Earth for 25 years collecting data on distant celestial objects, thanks to engineers at Perkins-Elmer who developed the optics and those at Lockheed Missile and ...