Callisto, the third largest moon in the entire solar system, orbits Jupiter from about 1.2 million miles away. The rocky ...

To get somewhere in outer space, you can’t exactly drive in a straight line. Orbits are tricky things, and sending a probe to ...

Data collected by NASA’s Galileo spacecraft in 1997 were put through ... of launching Europa Clipper into a direct insertion trajectory to Jupiter, foregoing multiple gravity assist flybys ...

In this interactive time line, trace the trajectory of discovery, from Galileo's invention of the first thermometer-like device in the late 1500s to a low-temperature experiment in 2003 that came ...