In the early chaos of planetary formation, before crusts cooled or atmospheres settled, water might already have been ...

Washington, DC— Our galaxy’s most abundant type of planet could be rich in liquid water due to formative interactions between ...

Tests on olivine hint that water-rich exoplanets could generate H2O internally, possibly explaining ocean worlds and even some of Earth’s early water.

Our galaxy's most abundant type of planet could be rich in liquid water due to formative interactions between magma oceans ...

New experiments show young rocky planets can generate water naturally when molten surfaces react with hydrogen in their early atmospheres.

About 50 light-years from Earth, a gas giant about half the mass of Jupiter orbits a sunlike star. The discovery of Pegasi 51 b ushered in a new era of exoplanet research.

Estimating the chance of getting a message from life beyond Earth, say within the next decade, isn’t easy. Even the best experts are reluctant to offer precise odds. “Anybody who gave you a figure ...

In “Citizen Science in Astronomy (Part 7),” SETI Institute astronomers Dr. Franck Marchis and Dr. Lauren Sgro highlight two rare and compelling discoveries and the crucial role of citizen scientists ...

"Lava planets are in such extreme orbital configurations that our knowledge of rocky planets in the solar system does not directly apply." Astronomers may be starting to get the goods on lava planets.