ANSWERS: 1
-
In the old Superman TV series staring George Reeves, they explained it in the pilot episode. When Kal El was sent out from Krypton in the escape rocket as a baby, he was wrapped in a blanket. This blanket was also affected by the red sun/yellow sun transition so it was basically indestructable. Martha Kent used the blanket to create Superman's costume. (Since she obviously couldn't cut/sew it she supposedly un-wove the fabric or something--a little weak on that point).
Copyright 2023, Wired Ivy, LLC

by 