ExtraTERRORestrial Alien Encounter, The Attraction in Tomorrowland in Magic Kingdom Park at Walt Disney World, from Disney and George Lucas, opened on June 20, 1995. Housed in the Tomorrowland Interplanetary Convention Center was the laboratory of X-S Tech, a corporation from a distant planet intent on demonstrating its interplanetary teleportation apparatus. But the demonstration was marred by difficulties and an alien creature was accidentally teleported into the laboratory. Took the place of Mission to Mars. The attraction closed October 11, 2003, and reopened November 16, 2004, as Stitch’s Great Escape!