Earth" that is located about 154 light-years away and is nearly twice as big and four times as massive as our planet.

NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth ...

Aliens have been one of the most enduring elements of science fiction. Sometimes they’re terrifying, sometimes they’re wise, ...

In April, scientists announced that they had used NASA’s James Webb Space Telescope to find a potential signature of alien life in the glow of a distant planet. Other scientists were quick to ...

Newfound interstellar object 3I/ATLAS may be carrying pristine material from early in the Milky Way’s star-forming history.

Just last month, a powerful solar storm lit up skies across the northern hemisphere, producing vivid auroras visible as far ...

A fluffy, Jupiter-sized planet may be triggering deadly flares from its star, leading to the slow destruction of its own atmosphere.

The first interstellar object spotted in our Solar System was the cigar-shaped ‘Oumuamua, discovered in 2017 by the ...