Answer: voyager

AnswerCrossword Clue
VOYAGERMost distant man-made object in space
VOYAGERFirst mission to visit Uranus and Neptune
VOYAGERSeafarer
VOYAGERRobotic space probe
VOYAGERJaneway's ship
VOYAGERCaptain Cook.
VOYAGERFirst spacecraft to reach Uranus and Neptune
VOYAGERJovian system photographer
voyagerone who voyages (to travel (to go from one place to another))
voyagerone of a series of U.S. space probes that obtained scientific information while flying by the planets Jupiter, Saturn, and Uranus