Related topics: earth

When did the first exocontinents appear in the universe?

On Earth, continents are likely necessary to support life. Continents "float" on top of the Earth's viscous mantle, and heat from the planet's core keeps the mantle from solidifying and locking the continents into place.

The lunar alarm clock: New study characterizes regular moonquakes

Every morning and afternoon, like clockwork, the surface of the moon trembles with tiny "moonquakes." Now, new analysis of seismic activity on the moon has characterized these events and discovered that some of them are not ...

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