Uhhh, unless the aliens are super-thin pancake like creatures that move inches in their entire lives. “eight times more massive than Jupiter” The atmospheric and gravitational pressure would be RIDICULOUS. Maybe not the atmospheric, but you get the idea. It might be inhabited by those cute little water bears ( http://en.wikipedia.org/wiki/Tardigrada ).

Could this be the home to our alien neighbors? In a word…”No”.