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

Uranus’s tiny moon Ariel may have had a subsurface ocean that made up around 55% of its total volume. By mapping craters, ...

Amazing views of Jupiter over the years via the Hubble Space Telescope. The moons of Io, Ganymede and hazy Uranus can be ...

The method, developed by researchers at the State University of Campinas in Brazil, uses images of dune surfaces to estimate ...

On October 29, the sky delivers a sharp dose of mental electricity as Mercury forms an opposition to Uranus. That means ideas ...

Professional astrologer Steph Koyfman reads your monthly horoscope—and spells out how it may shape your travels.