Tag: ancient

Differences between the Moon’s near and far sides linked to colossal ancient impact

The face that the Moon shows to Earth looks far different from the one it hides on its far side. The nearside is dominated...

Ancient helium leaking from core offers clues of Earth’s formation

Helium-3, a rare isotope of helium gas, is leaking out of Earth's core, a new study reports. Because almost all helium-3 is from the...

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