If there was a contest for the most interesting moon in our solar system, Callisto would be a contender. Jupiter's ...

Europa is the sixth largest satellite in our Solar System and the smallest of Jupiter’s four Galilean moons. Discovered by ...

NASA’s former Galileo spacecraft still holds the Europa flyby record, passing within 351 kilometers in 2000.

Discovered by Galileo Galilei in 1610, Io, Callisto, Europa and Ganymede are proving to be fascinating topics of study for modern day astronomers. We’ve already sent a mission to one of them ...

NASA’s Galileo spacecraft, which was designed to study ... Future missions like NASA's Europa Clipper and the European Space Agency's (ESA) JUICE are set to confirm whether this distant moon ...

Astronomers have uncovered new evidence that Jupiter’s moon Callisto likely harbors a massive underground ocean, potentially joining Europa and Ganymede as another water-rich world in the outer solar ...

Earlier this week, Saturn gained a whopping 128 new official moons, as the International Astronomical Union recognised ...

Full of extraordinary footage, Robert Stone's blissed-out mind-bender of a movie meditates on the possibilities of life in the universe.

This image was taken by the Cassini mission. NASA/JPL-Caltech ... Jupiter's four largest moons – Io, Europa, Ganymede and ...

In short, Galileo's readings were initially difficult ... Science won't have to wait another 30 years to find proof. NASA's Europa Clipper mission set sail last year and should reach Jupiter ...

Lee, a NASA engineer and best-selling science-fiction author, was the director of mission planning during the Viking missions to Mars and also the chief engineer for the Galileo mission (which ...