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adj. Being or originating outside the solar system: an extrasolar planet.

adj. Of or originating outside the Solar System

adj. Of or originating in a solar system other than Earth's

In astronomy, situated outside of or beyond the solar system.

"Yet until the 1990s, with the discovery of a star that wobbled suggesting it was being orbited by a large object, there was no concrete evidence that any of these so-called extrasolar planets existed."

interstellar   

extragalactic    solar    extraterrestrial    extraplanetary   

terracompatible    next-to-the-last    colonizable    federated    terrestroid