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Huge space rocks could have helped start Earth’s plate tectonics

Earth

Huge space rocks could have helped start Earth’s plate tectonics

Nobody knows how or why plate tectonics got started on Earth. But new evidence suggest collisions with space rocks millions of years ago may have something to do with it

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OSIRIS-REx spacecraft zooms by Earth on its way to an asteroid

Space

OSIRIS-REx spacecraft zooms by Earth on its way to an asteroid

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Earth

Our terrifying energy future leaves us with uncertainties

Culture

Space

Cassini ends its 20-year mission by slamming into Saturn

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Watching Cassini’s last moments from inside NASA mission control

Space

Watching Cassini’s last moments from inside NASA mission control

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Cassini takes last look at the ring patterns made by mini moons

Space

Cassini takes last look at the ring patterns made by mini moons

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Final pictures from Cassini as probe smashes into Saturn

Space

Final pictures from Cassini as probe smashes into Saturn

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Tears for Cassini: why it's OK to well up over a lump of metal

Space

Tears for Cassini: why it's OK to well up over a lump of metal

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Space

Cassini's Grand Finale: The ups and downs of our 20-year mission

Features

What Cassini saw...

Space

Cassini's Grand Finale: The spacecraft that unveiled Saturn

From magical rings to loony moons to giant polar hurricanes, in 13 years orbiting Saturn the Cassini probe has exposed many wonders. Here's our pick

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Space

The Farthest: How the Voyager story keeps on giving

Culture

Space

Nine probes reached the outer solar system: Where are they now?

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Space

Cassini’s 10 best pictures from its 13-year voyage around Saturn

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Space

Cassini's legacy: Where next in the search for alien life

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