Star Wars planets are often designed as interesting battlefields first and real locations second. Tatooine's Mos Eisley Cantina delivered one of the most textured and compelling sets in sci-fi history, but Hoth mostly felt like an excuse to fight in the snow. One of the franchise's most critical planets went unmentioned in most of the nine films, but Ilum's entrance into most Star Wars' fans' consciousness came with a bang.