Interstellar comet 3I/ATLAS reveals ancient secrets and strange chemistry as the largest object of its kind ever tracked.

In July, researchers using the NASA-funded Asteroid Terrestrial-impact Last Alert System survey telescope in Chile made an ...

As this interstellar object approached its closest point to Earth, a massive radio telescope attempted to sniff out a ...

As 3I/ATLAS starts its long, lonely journey into the cold depths of interstellar space, it leaves behind a trail of data that ...

The Manhattan-sized interstellar visitor hurtling through space has captured the imaginations of UFO watchers for months and ...

For a long time, people have looked up at the stars with both curiosity and fear, wondering when the next messenger from the ...

Hubble's latest images of interstellar comet 3I/ATLAS reveal sustained, jet-like eruptions and a carbon dioxide-rich coma ...

A team of astronomers have used the Hubble space telescope to capture with direct imaging asteroids smashing into each other ...

Learn about the 3I/ATLAS mystery as Harvard's Avi Loeb reveals 'wobbling jets' that could suggest the interstellar visitor is ...

But on a smaller scale, three additional and mysteriously symmetrical jets become apparent in the Hubble observations, which ...

Mars. From forming black holes to phantom dark energy, discover the cosmic mysteries astronomers uncovered last year.

Fans of the Predator franchise should check out these 15 other movies featuring alien threats, outer-space terror, and ...