You are hereArchive - May 14, 2009

Archive - May 14, 2009

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Brief History of Hubble Space Telescope - undergoing final maintenance-and-repair mission before retiring in 2014

Hubble lifts off on board Discovery in 1990

(quote)

*update* 2019
The Hubble Space Telescope (often referred to as HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation.

The $1.5 billion Hubble rocketed to space aboard the space shuttle Discovery on April 24, 1990. It's named after Edwin Hubble, a pioneering American astronomer who furthered our understanding of other galaxies and demonstrated that the universe is continually expanding.

primary mirror, the Hubble Telescope

The Hubble's primary mirror, nearly eight feet across. A flaw in the mirror was discovered after the Hubble was in space; thanks to miscalibrated equipment, its glass had been ground slightly too finely at the edges. Though the imperfection measured just one-fiftieth of the thickness of a piece of paper, it distorted the Hubble's images. Astronauts fixed the problem in 1993.

Hubble Telescope orbits at a speed of five miles per second, 353 miles above Earth

About the size of a large school bus, the Hubble orbits at a speed of five miles per second, 353 miles above Earth. At that velocity it can cross the United States in about 10 minutes and circle the globe in an hour and a half. read more »

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