Stunning images of mysterious red lights appearing to fall from space have captured global attention, sparking widespread speculation online. Many social media users suggested these ghostly flashes ...

From the ISS, NASA astronaut Don Pettit captured rare purple lightning and mysterious upper-atmosphere flashes above massive ...

A storm chaser says he "screamed" when he captured an elusive natural phenomenon, known as red sprites, on video.

“As we went over Mexico and the U.S. this morning, I caught this sprite,” the former collegiate volleyball player said Ayers is aboard the International Space Station as pilot of SpaceX Dragon’s ...