According to astrophysicist Tyson, director of New York City's Hayden Planetarium, size does matter when it comes to black holes, although the chances of your surviving the encounter aren't good in any case. Tyson takes readers on an exciting journey from Earth's hot springs, where extremophiles flourish in hellish conditions, to the frozen, desolate stretches of the Oort Cloud and the universe's farthest reaches,