The odd atmosphere of a fledgling exoplanet is causing astronomers to question leading theories of how planets form. When you purchase through links on our site, we may earn an affiliate commission.

Far beyond the eight familiar planets in our solar system, countless bizarre and extreme worlds await discovery — and some have already been found. Thanks to rapidly advancing telescope technology, ...

As shocking as it sounds today, prior to the 1990s, scientists couldn't be certain that stars beyond the sun also had planets orbiting them. Since the discovery of the first extra-solar planet, or ...

Astronomers have made an extraordinary discovery—for the first time, scientists have directly observed two alien planets disintegrating before our eyes. These exoplanets, orbiting different stars, are ...

The U.S.-led search for the existence of extraterrestrial life has reached a threshold, primarily through the discovery of alien planets made by NASA’s Kepler space telescope, making it theoretically ...