Superman was born on a planet called Krypton. His name was Kal-El. When his father, Jor-El, found out that their planet was going to explode, Jor-El sent his baby son to Earth in a spacecraft to save him. Kal-El was found and adopted by Jonathan and Martha Kent. They named him Clark Kent. The Kents raised him as their own son in a town called Smallville, Kansas in the United States. (There is a television series called "Smallville" about his time growing up there)