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 ...

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

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 ...

Have you ever found something unexpected in your hamburger? Astronomers using the Atacama Large Millimeter/submillimeter ...

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

Two separate research teams have observed a previously unseen microlensing event, confirming the existence of a particular ...

For centuries since the Sun was declared the center of the solar system in the 16th century, society held the belief that any ...

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

Rogue planets — worlds that drift through space alone without a star — largely remain a mystery to scientists. Now, ...