Wonder Woman is the only Amazon with superpowers. The rest are just normal women blessed with immortality by Hera after Hercules and his men raped and brutalized them all. So no, you don't need an explanation as to why they have superpowers because they don't have them.
Wonder Woman, in the current comics, is actually a being exactly like Hercules. She's the daughter of an illicit relationship between her mother, Hippolyta and Zeus. So basically she's half god, which is why she has powers. Just make the Olympian Gods like Marvel's Asgard and be done with it if you want to make them aliens, why change what is already a pretty damn good origin story? It's dumb and ruins a major aspect of the character.
[This message has been edited by Vander (edited 1/6/2014 3:01p).]
Wonder Woman, in the current comics, is actually a being exactly like Hercules. She's the daughter of an illicit relationship between her mother, Hippolyta and Zeus. So basically she's half god, which is why she has powers. Just make the Olympian Gods like Marvel's Asgard and be done with it if you want to make them aliens, why change what is already a pretty damn good origin story? It's dumb and ruins a major aspect of the character.
[This message has been edited by Vander (edited 1/6/2014 3:01p).]