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Happy 20th anniversary, Hubble! | Bad Astronomy | Discover Magazine

April 23

On April 24, 1990, the Space Shuttle Discovery roared into space, carrying on board a revolution: The Hubble Space Telescope. It was the largest and most sensitive optical-light telescope ever launched into space, and while it suffered initially from a focusing problem, it would soon return some of the most amazing and beautiful astronomical images anyone had ever seen.

Hubble was designed to be periodically upgraded, and even as I write this, astronauts are in the Space Shuttle Atlantis installing two new cameras, fixing two others, and replacing a whole slew of Hubble’s parts. This is the last planned mission, ever, to service the venerable ’scope, so what better time to talk about it?

Full Article:  Happy 20th anniversary, Hubble! | Bad Astronomy | Discover Magazine.

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