Here’s a few of the fascinating innovations that, as Jackie explains, changed how we view—and how I think—about space forever. Related Story Pop Mech Explains the UniverseCosmos in ColorMy college astronomy textbook was filled with alluring, detailed images of the universe that made it appear almost fantastical. Watch this Pop Mech Explains the Universe episode for more on just how scientists pulled off the massive feat of photographing a black hole. When gravitational waves pass through these 2.5-mile-long detector arms, the lasers go out of sync. If you’re also now interested in gravitational waves, you’ll want to watch this episode for more on the technology that measures the ripples in spacetime.