Friday, January 7, 2011 9:45:00 PM
"Couldn't Lex have gone back in time and stopped Brainiac from being created? Or stopped himself from killing Superman?"
no, that`s solidified time. like when Booster Gold tried to stop Barbara Gordon from getting shot (or all the times he`s tried to stop Ted Kord from getting shot.) They talk about it a lot in the current Booster Gold book, and in the new Time Masters book.