Krypton

Krypton is the fictional planet in the DC Universe and the native world of Superman (Kal-EL)and Kara Danvers (Kara Zor-El). Krypton was a thriving planet once with highly intellectual life. he planet exploded when a nuclear chain reaction in the planets core destroyed it. Kal-El's father sent him in a spacecraft towards earth before destruction of the planet. Kara was also sent to Earth where she was adopted by the Danvers.