For a world to maintain an atmosphere long enough for life to gain a foothold, it seems it needs to be at least as big as ...

Dreams of finding a sort of Earth 2.0 motivate much of the thinking around the search for exoplanets. But there is more to ...

Exoplanets are planets that orbit stars other than the sun and thus exist outside the solar system. The word "exoplanet" ...

The Virtual Planetary Laboratory (VPL), one of NASA’s flagship astrobiology research teams, has officially joined the SETI ...

The European Space Agency’s Euclid telescope was built to study dark matter and dark energy, but for one day last year, it captured the densely packed stars brightening the center of our galaxy ...

The planets that appear most common in the universe could have a lot of water—but it could be hiding where telescopes can't ...

The discovery boosts the chances of finding extraterrestrial life.

Astronomers have spotted helium escaping from LHS 1140b, an exoplanet orbiting in its star’s ‘habitable zone’.

Launching Aug. 30, the Nancy Grace Roman Space Telescope will investigate dark matter, dark energy and distant worlds while ...

Sub-Neptune exoplanets could have atmospheres so dense and crushing that rock is vaporized to form clouds that trap heat at ...

NASA's James Webb Space Telescope has revealed new details about the blistering lava planet 55 Cancri e, where temperatures ...