Originating, or located outside of a planet(adjective)
Extraterrestrial, originating or located outside Earth(adjective)
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Use "extraplanetary" in a sentence
"With the fall of the Berlin Wall in 1989 and the subsequent collapse of the Soviet Union, an astronaut from Russia or Japan would be as likely as one from the United States to board the International Space Station—where extraplanetary work still goes on, in English."
"In 1979, Carnegie Mellon University anointed the term with academic authority by founding its now-renowned Robotics Institute, which specializes in what the institute calls “thinking robots,” from the miniature to the medical and beyond, to the extraplanetary."
"The only other movie to do that more graphically is "Wall•E," with its extraplanetary leisure world of grotesque waddlers."