Add Yahoo as a preferred source to see more of our stories on Google. Lurking throughout the distant cosmos beyond the solar system, researchers recently found what they believe could be another ...

Scientists have found a massive rocky world far beyond our solar system that is more than 20 times the mass of Earth.

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

For astrobiologists, the search for life beyond our solar system could be likened to where one would look in a vast desert—essentially, where there's water. And it turns out that one of the most ...

The search for life beyond Earth has marked a new discovery — evidence of an atmosphere on an Earth-like planet beyond our Solar System with modelling suggesting it may be a water world.

Far beyond the planets, past even the most distant dwarf worlds, lies a vast shell of icy debris that marks the true outer ...

Artwork: The red tinge illustrates an atmosphere around a rocky planet orbting a red star Researchers have found the first atmosphere surrounding an Earth-like, rocky planet orbiting within the ...

Nearly 4.5 million years ago, two large, hot stars brushed tantalizingly close to Earth's sun. They left behind a trace in the clouds of gas and dust that swirl just beyond our solar system—almost ...

Astronomers are rolling out a welcome mat for a newly identified visitor from beyond our solar system. The object — thought to be a comet — is only the third-ever confirmed interstellar visitor to ...

Comet 3I/ATLAS is an interstellar traveler, visiting our solar system from another part of the galaxy. While its place of origin remains a mystery, astronomers believe it was formed under conditions ...

Sub-Neptune exoplanets tend to be much closer to their host star than Earth is to the Sun and are thought to have atmospheres made of steam over layers of an exotic phase of water that behaves like ...