Space
Has an alien comet infiltrated the solar system?
The peculiar composition of Comet Machholz 1 hints that it may be an interloper from another star system
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Space
Rare celestial trio dazzles sky watchers
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Space
Supersonic water jets shoot from Saturn moon
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Earth
Did lack of comet impacts help life evolve?
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Space
Solar-powered probe to view unseen parts of Jupiter
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Space
Vast stores of water ice surround Martian equator
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Space
What has the Phoenix mission taught us about Mars?
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Life
More evidence points to past oceans on Mars
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Earth
Life caused explosion in our planet’s mineral wealth
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Space
Mysterious changes seen on distant dwarf planet
The dwarf planet Eris's surface appears to have changed in the last few years, but it's not clear why
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Space
Taurid meteors may produce dazzling ‘fireballs’
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Life
Cassini might hold secrets to life on Saturn moon
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Space
Mysterious dark patches dot Mercury’s surface
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Space
Mars craters might be scars from fallen moon
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