A Falcon 9 launched a European satellite July 1 with a dual mission to collect weather data and monitor atmospheric pollution ...

Galileo started this quest over 400 years ago, and scientists finally were able to peek at one of the biggest mysteries of the big star in our solar system.

Nearly 400 years ago, Galileo looked at the Pleiades star cluster through his telescope and noticed that the seven or so ...

Galileo, which orbited Jupiter between 1995 and 2003, flew close to Europa several times, offering humanity its first detailed glimpses of the moon's surface and its secrets.

Europa has been near the top of the to-do list for planetary scientists since NASA's Voyager probes returned the first up-close images of Jupiter's moons in 1979. A follow-up mission, named ...

David W. Brown on a NASA mission to Jupiter’s moon Europa to search for alien life, and on the planetary scientist Louise Prockter, a leader of the mission.

While six spacecraft have visited and imaged Europa since it became one of the first moons found beyond Earth, the best evidence of a subsurface ocean was gathered by NASA’s Galileo spacecraft ...

NASA’s Galileo spacecraft had repeated flybys of the moon during the 1990s, passing as close as 124 miles. Still in action around Jupiter, NASA’s Juno spacecraft has added to Europa’s photo ...