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Barometer

3 October 2015

8:00 AM

3 October 2015

8:00 AM

Water worlds

Nasa announced it had found evidence of running water on Mars in the form of dark streaks on mountains and cliff edges. On which other planets and celestial bodies can you slake your thirst?
— Ganymede, a moon of Jupiter, is believed to have an ocean of liquid water 60 miles deep, beneath 90 miles of ice.

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