Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...

As astronomers study an exoplanet called K2-18b, conflicting research reveals how difficult it is to find evidence of life ...

ALMA study shows gas in young planet-forming disks fades faster than dust, reshaping how we understand planet formation.

The James Webb Space Telescope (JWST) has discovered that a hazy sky over frozen Pluto is helping to cool the dwarf planet's ...

A team of international astronomers has uncovered what may be a gas giant planet forming around a distant young star. Using ...

The idea of terraforming Mars—essentially reshaping the planet to support Earth life—has captured imaginations for decades.

Dusty clouds made of sand—that may rain iron—blanket a giant planet orbiting a young, sun-like star just 310 light-years from Earth, the James Webb Space Telescope has revealed. The discovery was made ...

It had not been thought possible that such tiny, weak stars could provide the conditions needed to form and host huge planets ...

Curiosity’s mission was originally supposed to last no more than two years but was extended indefinitely after it ...