Krypton

Krypton was located close to Earth, at least in cosmic terms. It was 50 light years from Earth and orbited a red giant star known as Rao. Krypton is roughly Earth sized and was part of Green Lantern sector 2813 (Earth is in sector 2814). However, in the story "Superman: Birthright", Krypton was said to be in another galaxy, approximately 2.2 million light-years away. Krypton is home to a race of people known as Kryptonians that are similar to humans but are more closely related to Daxamites. Under their red sun, the Kryptonians became a more technologically advanced society.