Space
Is Halley’s comet an alien interloper?
Our sun may have stolen the vast majority of its comets from other stars, new computer simulations suggest
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Space
Obama: Asteroid is NASA’s next stop in space
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Space
Hayabusa probe sailing towards Earth
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Space
Hurtling star on a path to clip solar system
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Space
‘Terminator’ asteroids could re-form after nuke
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Space
Dark, dangerous asteroids found lurking near Earth
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Space
Sun’s warmth blows comet’s icy heart apart
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Space
Hubble images site of possible asteroid collision
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Physics
Dying stars eat comets for their last supper
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Space
Panel calls for global ‘asteroid defence agency’
The US National Research Council panel also says that existing surveys cannot meet a congressional mandate to find potentially dangerous asteroids
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Space
Hidden asteroids are stalking the Earth
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Physics
Approaching Earth makes asteroids go pale
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Space
Trail of dust may point to fresh violence in asteroid belt
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Space
Solar system may be more compact than thought
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