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astronomy

Astrophile: Giant star comes with ancient tree rings

Space

Astrophile: Giant star comes with ancient tree rings

Reading the expanding dust shells produced by a nearby red giant prophesies a surprisingly active future for our own sun

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Bright 'hollows' on Mercury are unique in solar system

Space

Bright 'hollows' on Mercury are unique in solar system

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Astrophile: Frying pan forms map of dead star's past

Space

Astrophile: Frying pan forms map of dead star's past

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Astrophile: The most surreal sunset in the universe

Space

Astrophile: The most surreal sunset in the universe

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Space

Super-Earth discovered in a habitable zone

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Astrophile: Saturn-lookalike galaxy has a murky past

Space

Astrophile: Saturn-lookalike galaxy has a murky past

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Earth

Meteorite storm showered planet in gold

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Moon may be 200 million years younger than thought

Space

Moon may be 200 million years younger than thought

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Mars rover reaches rim of vast, ancient crater

Space

Mars rover reaches rim of vast, ancient crater

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The year's best astronomy photos

The year's best astronomy photos

With judging under way for the 2011 Astronomy Photographer of the Year competition, 51¶¯Âþ brings you a selection of the best entries

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Space

Second moon's remains may cover lunar far side

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Space

Earth stalker found in eternal twilight

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The next wave of radio telescopes

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Space

Fourth moon discovered around Pluto

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