Have you ever heard of—or even seen—red lightning? These are not animated characters but real atmospheric phenomena known as electrical discharges that occur high above thunderstorms.

For the first time on a global scale, 20 years of observations on Mars have been condensed into a single study led by ...

NASA astronaut Butch Wilmore has captured an image of a blue jet sprite in the Earth's atmosphere, a rare phenomenon only confirmed in recent years. Astronaut and keen astrophotographer Don Pettit ...