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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  • It's just a few pixels wide but it's one of the few we have of the former planet, now dwarf planet, Pluto.

  • 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

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Topic: Nasa / Space

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