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 twin Pioneer spacecraft and then two Voyagers swept past Jupiter in the 1970s. The Voyagers provided the first detailed photos of Europa but from quite a distance. NASA's Galileo spacecraft ...

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

Europa's frozen, fissured surface, seen here in a colorized mosaic image from the Galileo spacecraft, hides a liquid ocean that may hold all the ingredients needed for life. Three key ingredients ...

In the 1990s, however, NASA's Galileo spacecraft captured magnetic measurements near Callisto that suggested that its ice shell surface—much like that of Europa, another moon of Jupiter—may ...

NASA's Galileo mission, which launched into space in 1989 ... If true, that would make Callisto a close sibling to Europa, another moon of Jupiter. Though the existence of an ocean remains ...

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

"It's like a game of billiards around the solar system, flying by a couple of planets at just the right angle and timing to build up the energy we need to get to Jupiter and Europa." Today (March ...

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 ...