"Krypton (Donnerverse)"@en . . "Destroyed"@en . . . . . . "Krypton"@en . . "Krypton was the birth planet of Superman. Krypton's atmosphere caused its populace to develop a molecular density that caused them to have great strength and speed on planets like Earth. The planet was destroyed when Krypton's sun, Rao, went supernova."@en . "Superman: The Movie"@en . . . "Krypton was the birth planet of Superman. Krypton's atmosphere caused its populace to develop a molecular density that caused them to have great strength and speed on planets like Earth. The planet was destroyed when Krypton's sun, Rao, went supernova."@en . . . . "Corvus"@en . . . . "Krypton"@en . . . .