3 New Ways to 'See' Black Holes

In a world of conspiracy theories and Internet rumors, it's a wonder no one has ever called black holes a hoax. They're mysterious, they're powerful, but—oops!—they're entirely invisible. Trust us though, they're there. Most people don't doubt the truth of black holes, but the invisibility part does rankle astronomers, who prefer things they can see and measure. Well bad news, science folks, black holes aren't about to pop into view any time soon.