An astronaut on the International Space Station captured mysterious blue spheres in the sky last year. NASA’s Earth Observatory shared the photo last year, as well, shortly after it was taken.

A couple of popular science experts have made the same point to prove that the Flat Earth theory is a bunch of malarkey. It's ...

The search for alien life takes many forms, from identifying Earth-like planets to scanning for extraterrestrial signals.

Oil paintings of post-apocalyptic hovering orbs by Masakatsu Sashie. The post Masakatsu Sashie’s Spheres Hover Over ...