Massive volcanic eruptions billions of years ago may have made it snow on Mars, leaving thick buried ice near the planet’s ...

Explosive volcanic eruptions on early Mars may have transported water ice to equatorial regions, according to a modeling ...

Reanalysis of NASA's Pioneer Venus mission data reveals that Earth's twin contains 62% water in hydrated compounds.

Venus, our planetary neighbor, displays strange geological formations on its surface in the shape of coronae that have ...

Buried deep in Greenland's ice sheet lies a puzzling chemical signature that has sparked intense scientific debate.

In new research published in Science, a team of astronomers report the detection of a surprising substance in a brown dwarf known as Wolf 1130C: a chemical called phosphine, which has been the focus ...

The air on Venus is about 96.5% carbon dioxide, a potent greenhouse gas. All that CO2 leads to a runaway greenhouse effect ...

Strange, quasi-circular circles structures called coronae scour the surface of Venus — but their origins are a mystery.

Venus is often called Earth's "sister planet" because of their similarities in size, mass, and composition. Both are rocky ...

Scientists have proposed a new explanation for Venus' giant, crown-shaped geological features, known as coronae.

Massive lava-carved tunnels have been confirmed beneath the surface of Venus, providing the strongest evidence yet that the planet's volcanic past created underground networks unlike those ...