extrasolar

adj

1. (not-comparable)of or originating outside the Solar System.

   “Some comets are thought to have an extrasolar origin.”

2. (not-comparable)of or originating in a system other than Earth's, the solar system.

   “A four-inch telescope was once used to find an extrasolar planet.”

   “Of course, no one has any idea whether the extrasolar life is anything more than a few trillion microbes.”