NASA’s Europa Clipper spacecraft has sent back its first starry image, a significant milestone ... which help determine its ...

E-THEMIS lead scientist Philip Christensen stands next to the box-like "tent" that surrounds both E-THEMIS (left) and its optical test equipment. With the tent doors closed and sealed, the team ...

This image shows red streaks across the surface of Europa, the smallest of Jupiter’s four large moons. The upcoming Europa Clipper mission will send instruments to investigate this moon.