Its complicated, because Superman isn't quite immortal. Seeing as at some point even Stars die. In which case he could choose to find another Yellow Sun. However, it does not reverse the aging process only slows it down.
Typically he will not continue to age under a yellow Sun.
jupiter
Superman is from the planet krypton.
The Earth.
Saturn
Superman was from the planet Krypton, which exploded just after he was launched to safety in a rocket built by his father Jor-El.
A reporter for the Daily Planet
MARS
Superman is from the planet Krypton. He is one of the last survivors from there since it exploded.
Krypton
Superman comes form the planet Krypton.
superman
Krypton.