Add Yahoo as a preferred source to see more of our stories on Google. An artist's concept shows what K2-18b might look like. Thought to be covered entirely in liquid water with a hydrogen-rich ...

An artist’s depiction of an exoplanet larger than Earth and smaller than Neptune. A blue planet in the foreground blocks the light of a star. Recent high-temperature, high-pressure experiments suggest ...

Nasa may revisit one of outer space’s thorniest questions ...

Astronomers have discovered what they think may be another moon orbiting a distant dwarf planet called Quaoar. This small, icy, egg-shaped planet in the far reaches of our solar system, beyond Neptune ...

Astronomers have observed the intense heating of a distant planet as it swung close to its parent star, providing important clues to the atmospheric properties of the planet. The observations enabled ...

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 ...

The search for alien life often sparks the imagination with images of extraterrestrial beings and strange worlds. However, a new theory is shifting the focus—what if life elsewhere in the universe ...

These images, taken with the European Southern Observatory's Very Large Telescope (VLT) shows a planetary system being born around the young star WISPIT 2. The star is surrounded by a disc of gas and ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Olivia Harper Wilkins, Dickinson College (THE CONVERSATION) Astronomers can use ...