Back in April, the world became captivated by the news that maybe, just maybe, we weren't alone in the universe after all. If extraterrestrials were to exist on a distant exoplanet as a team of ...

Astronomers may have finally worked out how planets between the size of Earth and Neptune – which aren't found in our Solar ...

Scientists measured mass and distance of free floating planet drifting through space without star for first time.

Might the solar system harbor not just one, but two unknown planets? A fresh study of the Kuiper Belt’s structure has revived that far-out question, pointing to a possible Earth-sized world-nicknamed ...

K2-18b is a distant exoplanet in our Milky Way galaxy K2-18b is a distant exoplanet in our Milky Way galaxy K2-18b is a distant exoplanet in our Milky Way galaxy A team of astronomers have detected ...

An artist's concept shows what K2-18b might look like. Thought to be covered entirely in liquid water with a hydrogen-rich atmosphere, the exoplanet may be a good place to look for biological activity ...

A team of astronomers have detected what they call the most promising signs to date of a possible biosignature, or signs of past or present life linked to biological activity, on an exoplanet named K2 ...

But the study authors, and other experts, remain cautious and have not declared a definitive discovery of life beyond our planet.Related video above: Star swallows planet in one big gulpUsing the ...