One hundred twenty light-years from us, there is an exoplanet that can potentially host life. It's called K2-18b, and it's the world you'd want to visit. K2-18b isn't exactly like Earth. It's more ...

A mysterious object that a controversial scientist claims could be an alien battleship reached its closest point to Earth on Friday. The object, known as 3i/ATLAS, passed by at 130,000mph, at a ...

Weeks after a rare interstellar comet made its closest pass to the sun, it will make it’s closest pass to Earth. The comet has traveled billions of miles through other systems in space. Its orbit is ...

A mysterious metal shard captured the imagination of the American public, because it was supposedly from a 1947 UFO that crashed on Earth. The sample seemed to have an unprecedented material structure ...