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waves

Why Earth's water could be older than Earth itself

31 October 2018

How did water survive Earth's searingly hot birth? A radical new answer turns planetary history on its head – and could revolutionise the search for alien life
Photo of comet 67P/Churyumov–Gerasimenko taken by the Rosetta spacecraft

The mystery xenon in Earth’s atmosphere came from icy comets

8 June 2017

The moon is younger than we thought according to data from the Rosetta spacecraft that shows 22 per cent of our atmospheric xenon came from comets

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