Astronomers have, for the first time, pinned down both the mass and distance of a planet that drifts through the galaxy ...

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...

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

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

Most planets are part of a star system of their own – but some go their own way, and they have remained largely mysterious ...

The discovery of an extraordinary multi-planet system has demonstrated that so-called "hot Jupiter" planets may not be lonely giants after all. The findings could force scientists to revise their ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

New images from NASA 's Hubble Space Telescope have revealed an enormous, oddly shaped disk of gas and dust around a single ...

Hubble reveals the largest planet-forming disk ever seen, Dracula's Chivito, showing a chaotic and uneven environment around ...

Jupiter is the largest planet in the solar system, known for its massive size, strong gravity, powerful storms and many moons ...

What seemed like new planets around Fomalhaut were actually expanding dust clouds from violent planetary collisions seen by Hubble.

Astronomers gazing upon a star system not too far from Earth were recently treated to a marvelous discovery: a group of six planets moving around a sun-like star in a seemingly perfect cosmic dance ...