Gallery: Hubble's greatest hits - 20th anniversary

Gallery: Hubble's greatest hits - 20th anniversary

Summary: The Hubble space telescope was a total bust after it was dropped from space shuttle Discovery 20 years ago. But some fine tuning turned it into a grand scientific achievement.

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TOPICS: Nasa / Space
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  • NASA says there are 100,000, all squeezed (relatively speaking) into a small portion of the Omega Centauri star cluster. The yellow-white dots are adult stars powered by hydrogen fusion, the orange ones are late-life stars, and the red giants, which are shedding their gaseous envelopes, are older still.

    Credit: NASA

  • Carinae is a doomed star that was one of the brightest in the sky in 1843, disappeared from sight, and returned in 1998 and 1999 when its brightness doubled.

    Credit: NASA

  • The maintenance contract on the Hubble has run out. If there are any problems, scientists on Earth will have to deal with them. But the James Webb Space Telescope is set to launch in 2013 and will study the origins of the universe.

    Credit: NASA

Topic: Nasa / Space

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