As the US sets its sights on establishing a permanent base on the moon, its foothold in an area of space much closer to home is growing more uncertain.

The African continent is splitting along a triple junction of rifts that converge in Afar, Ethiopia. A new ocean may take millions of years to form, but that is giving scientists ample time to glean ...

A spacecraft could plunge into Earth’s atmosphere as soon as Tuesday. While most of the probe will likely burn up during reentry, a few components are expected to survive.

Little Foot, a 3.67 million-year-old human ancestor, is getting a digital facial reconstruction after her skull was crushed in a cave.

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