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Two Earth-sized dead stars with oxygen-rich atmospheres found
Friday, 13 November 2009
Two Earth-sized objects with oxygen-rich atmospheres have been discovered by British astronomers — but they are unlikely to provide homes for aliens.
The unusual ‘white dwarfs’ located 400 and 225 light years away are the remnants of stars, not planets.
They are all that is left of huge stars that have consumed their nuclear fuel. Theory suggests that large stars end their lives either as white dwarfs, or by exploding and collapsing into dense neutron stars.
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