Secret Origins (1986-1990) #1

"THE SECRET ORIGIN OF THE GOLDEN-AGE SUPERMAN." The planet Krypton is in its death throes with only hours before its uranium core explodes. Respected scientist Jor-El and his wife Lara place their infant child, Kal-El inside of an experimental rocket and launch him into outer space just as the planet explodes. You know the rest of the story…or do you?