Stars and planets are inextricably linked. They form together and stars shape the fate of planets. Stars create the dusty ...

So far, humanity has yet to find its first "exomoon"—a moon orbiting a planet outside of the solar system. But that hasn't ...

Each Monday, I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes ...

Choose your fighter for the origin of water on Earth! Was it always here or did it come to this planet from somewhere else in ...

NASA’s Hubble Space Telescope has captured infant planets colliding around Fomalhaut, one of the brightest stars in the night ...

Jupiter, as always, is a dazzling object, shining among the stars of Gemini the Twins. It reaches opposition on Jan. 10; this ...

Not all planets are small compared to stars. Some grow so massive they approach stellar size, challenging how astronomers ...

The team’s analysis points to a lensing object with a mass of 0.219 Jupiter masses, a touch lighter than Saturn or around 70 ...

Why now: In April, current Caltech President Thomas F. Rosenbaum announced he'd retire after the 2025-26 academic year.

The planets of the solar system orbit the sun in a complex and ever-shifting ballet, which can see them appear as glorious ...

An exosyzygy – an alignment of three celestial objects around another star – is predicted to happen later this year, but it ...

Scientists have discovered a rogue planet roaming the Milky Way after combining observations from Earth and a space telescope ...