NASA astronaut Nichole Ayers captured a rare and stunning image of a ‘sprite’ — a Transient Luminous Event (TLE)—from space.

HOUSTON — The ISS astronauts had a front-row seat to a unique weather phenomenon Thursday morning. Astronaut Nichole "Vapor" ...

An astronaut aboard the International Space Station has shared a striking photo of what is known as a Transient Luminous ...

Both events represent classic novas, which are space explosions that are shorter-lived than supernovas, with such phenomena ...

From Mercury’s peak visibility to the Southern delta Aquariids meteor shower, July’s skywatching lineup promises an array of ...