An ancient lava flow on Earth's moon.

A volcano erupts with lava, fire and smoke.

A volcano comes to life with fire, smoke and lava.

An active volcano belches smoke and molten red lava in an eruption.

Artist's concept of a view across a pool of lava on the surface of Io, towards Jupiter.

The Sun begins its journey toward becoming a red giant.

A scene on Jupiter's moon, Io, the most volcanic body in the solar system.

Future astronauts observe an eruption on Io, Jupiter's super-volcanic moon.

Kepler 10b is the first extrasolar planet discovered that is known to be solid.

Volcano

Pacaya lava flow, Guatemala.