The moon sustained twice as many impacts as can be seen on its surface, scientists find.

Just 33 light years from Earth, the system appears to host two rocky, Earth-sized planets.

The varied surface suggests a dynamic history, which could include metallic eruptions, asteroid-shaking impacts, and a lost rocky mantle.

New findings may help explain how Earth’s crust forms, the location of ore deposits, and why some volcanoes are more explosive than others.

Among thousands of known exoplanets, MIT astronomers flag three that are actually stars.

Scientists propose a new mechanism by which oxygen may have first built up in the atmosphere

The planet’s night side likely hosts iron clouds, titanium rain, and winds that dwarf Earth’s jetstream.

A levitating vehicle might someday explore the moon, asteroids, and other airless planetary surfaces.

A new study shows it’s theoretically possible. The hypothesis could be tested soon with proposed Venus-bound missions.

The boiling new world, which zips around its star at ultraclose range, is among the lightest exoplanets found to date.