The faraway exoplanet could help provide answers as to why there are hardly any planets with twice the diameter of Earth.

New findings from the ALMA telescope have revealed that planets are born in much smaller protoplanetary disks than ...

Pollard A quartet of Earth-like worlds, each about 20% to 30% ... gas giant but instead by the combined force exerted by four ...

Even more exciting, the model suggests that some Earth-like planets could form in the habitable zone—the region around a star ...

Astronomers have identified a quartet of small rocky planets orbiting Barnard's star - one of our closest stellar neighbors - ...

These rather small planets are a stone's throw from Earth in galactic terms, but were too small for previous instruments to ...

Last year, astronomers announced that a planet orbits Barnard’s star. Now, researchers have confirmed the existence of three more.

Young, close-orbiting exoplanets known as sub-Neptunes may form farther from their stars and migrate inward or lose their ...

Earth has a nearly circular orbit ... while giant planets have orbits about four times more elliptical than smaller planets. The finding points toward two different pathways by which large ...

The NEO Surveyor fulfills a 2005 act of Congress ordering NASA to catalog 90% of near-Earth objects larger than 459 feet, ...