The largest moon in the solar system

Deep-space missions are usually one-way trips, and that's certainly true

NASA's upcoming Europa Clipper mission, which, after investigating the potential

But rather than plunging into Jupiter as had previously been planned

spacecraft may now crash into Ganymede or Callisto, two of Jupiter's Galilean moons

scientist Bob Pappalardo said at a June 15 meeting of the Outer Planets Assessment Group

scientist Bob Pappalardo said at a June 15 meeting of the Outer Planets Assessment Group

The change in the disposal site is one of several budget-saving measures taken

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