give me a summary about super girl

Supergirl is a superheroine character in the DC Comics universe. She is the cousin of Superman and has similar powers like him, including super strength, speed, and the ability to fly. Her real name is Kara Zor-El and she is from the planet Krypton. When her planet was destroyed, she was sent to Earth to protect her and was adopted by the Danvers family. Supergirl fights for justice and protects the citizens of Earth from various threats. She has appeared in comics, TV shows, and movies.