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immune system

Meteor impacts may have sparked life on Earth

Earth

Meteor impacts may have sparked life on Earth

While space rocks hurtling in from space threaten to deal modern life a blow, impacts into Earth's early oceans may have produced the organic molecules that enabled life on the planet

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'Rhythms' in Martian rocks mark out past climate swings

Space

'Rhythms' in Martian rocks mark out past climate swings

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Has an alien comet infiltrated the solar system?

Space

Has an alien comet infiltrated the solar system?

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Rare celestial trio dazzles sky watchers

Space

Rare celestial trio dazzles sky watchers

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Supersonic water jets shoot from Saturn moon

Space

Supersonic water jets shoot from Saturn moon

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Did lack of comet impacts help life evolve?

Earth

Did lack of comet impacts help life evolve?

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Solar-powered probe to view unseen parts of Jupiter

Space

Solar-powered probe to view unseen parts of Jupiter

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Vast stores of water ice surround Martian equator

Space

Vast stores of water ice surround Martian equator

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What has the Phoenix mission taught us about Mars?

Space

What has the Phoenix mission taught us about Mars?

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More evidence points to past oceans on Mars

Life

More evidence points to past oceans on Mars

Chemical fingerprints in the soil suggest Mars may have had a succession of relatively short-lived oceans

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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

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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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