Answer: spaceprobe

AnswerCrossword Clue
SPACEPROBE

Galileo, e.g.

SPACEPROBE

Magellan, for one

SPACEPROBE

Solar system explorer

SPACEPROBE
Robotic solar system explorer
SPACEPROBE
Certain exploration
SPACEPROBEVoyager 2, e.g.
SPACEPROBEIt goes a long way
SPACEPROBEFar-off explorer