Io is an incredibly active and extreme place, with glistening lava lakes and volcanic eruptions shooting sulfur and magma to huge heights.

Fluorescent cave minerals are helping scientists explore how life could survive in harsh places like Europa. Far beneath ...

According to new simulations, many, even most, planets get ejected from their star early in their history Star Trek ...

A pair of planetary scientists at the University of California, working with a colleague from the California Institute of ...

Polar bears aren't white, strawberries aren't berries and the Earth isn't round—we'll have you rethinking everything you ...