NASA astronaut Don Pettit captured breathtaking video of a rare atmospheric phenomenon from his perch high above Earth on the International Space Station.

Two astrophotographers captured breathtaking video of over 105 red sprites over Tibet during a massive thunderstorm.

NASA astronaut Don Pettit is known for snapping stunning space imagery from the International Space Station (ISS), and his ...

Imagine a Slushee composed of ammonia and water encased in a hard shell of water ice. Now picture these ice-encrusted ...

Observations of Jupiter show that ammonia is unevenly distributed in the upper atmosphere, against expectations of uniform mixing. Scientists found evidence for a complicated but apparently real ...

NASA's Juno revealed mushballs on Jupiter, reshaping our understanding of deep, violent gas giant storm systems.

A bizarre hailstorm of icy “mushballs” — slushy mixtures of ammonia and water — has been confirmed on Jupiter, where intense ...

A cross section of the upper atmosphere, or troposphere ... illuminated by intense flashes of lightning. Planetary scientists at the University of California, Berkeley, now say that hailstorms ...