A 2020 astronaut photo shows three uniquely colored lakes — Tahoe, Walker and Mono — straddling contrasting biomes on either side of the California-Nevada border.

Unusually tall red auroras over Japan may be revealing that some solar storms are stronger than scientists realize. A study published in the Journal of Space Weather and Space Climate reports that red auroras observed over Japan extended to altitudes of roughly 500-800 kilometers above Earth. The discovery was made by researchers from Hokkaido University [...]

A new study suggests that the intense asteroid bombardment that struck the young Earth billions of years ago may have played an important role in creating the conditions needed for life to emerge. Today, asteroid impacts are often associated with destruction and mass extinctions. But during Earth’s earliest history, these violent collisions may have helped […]

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Scientists have proposed a spacecraft-based system to actively strengthen Earth's magnetic shield and reduce the impact of powerful solar storms.