It takes a lot to kill a superhero, but comic writers love to try to take them out anyway. After all, it's a good way to sell comics! Of course, most of the time they return, but their deaths make for good stories. Here are the times when some of our favorite comic superheroes bit the dust.
Jean Grey, also known as Phoenix, was a founding member of the X-Men and has always been a little too powerful for her own good. After she turned into Dark Phoenix and destroyed a distant inhabited solar system full of 5 billion people, she comitted suicide to prevent something like that from ever happening again. Later Jean Grey was shown to be still alive and it was revealed that the Phoenix force had separated from her and that was what had killed all of those people and itself.