Gravity's engines: The other side of black holes

It’s an incredible story that spans 13 billion years, and takes us from the realm of subatomic physics to the edge of ferocious black holes ten billion times the mass of our Sun. You might think that they’re hidden and invisible, lurking in darkness, but they’re not! Astrobiologist Caleb Scharf explains why astronomers now think that black holes played a vital role in sculpting the universe into its present form. For more information and to book visit www.rigb.org