On Dec. 28, 2000, NASA’s Galileo spacecraft discovered auroras on Ganymede, Jupiter’s largest moon. Galileo launched in 1989 ...

A (Galileo In-Orbit Validation Element-A for those who like their expansions) was launched, one of two demonstration ...

The first pair of Galileo navigation satellites to launch on an Ariane 6 lifted off from Europe's Spaceport in Kourou, French Guiana on Wednesday (Dec. 17) at 12:01 a.m. EST (0501 GMT; 2:01 a.m. local ...

LOS ANGELES - Since 1989, the camera on NASA's Galileo spacecraft has captured a comet slamming into Jupiter, volcanoes erupting on one of its moons and the first known moon orbiting an asteroid. On ...

Europe has quietly completed another step in securing long-term access to satellite navigation by inserting two fresh spacecraft into orbit in mid-December. The launch, carried out using an Ariane 6 ...

Images from NASA's Galileo mission reveal a tantalizing starburst-like feature. Scientists call it a "wall demon." When you purchase through links on our site, we may earn an affiliate commission.

In a mission that changed our understanding of gas giants, NASA’s Galileo spacecraft made history not just in orbit but also in its dramatic descent into Jupiter’s atmosphere. Launched in October 1989 ...

An Ariane 6 launches two Galileo navigation satellites Dec. 17. Credit: ESA-CNES-Arianespace-ArianeGroup/Optique vidéo du CSG - S. Martin WASHINGTON — An Ariane 6 rocket placed two satellites for ...

A new analysis of data from NASA’s Galileo spacecraft reveals a subsurface “ocean” of magma–either molten or partially molten–beneath the surface of Jupiter’s volcanic moon Io. The finding, from a ...