What are the mysterious numbers that unlock the secrets of the universeIn Fantastic Numbers and Where to Find Them leading theoretical physicist and YouTube star Antonio Padilla takes us on an irreverent cosmic tour of nine of the most extraordinary numbers in physics. These include Grahams number which is so large that if you thought about it in the wrong way your head would collapse into a singularity TREE3 whose finite value could never be reached before the universe reset itself and 10120 which measures the desperately unlikely balance of energy the universe needs to exist. . .Leading us down the rabbit hole to the inner workings of reality Padilla demonstrates how these unusual numbers are the key to unlocking such mindbending phenomena as black holes entropy and the problem of the cosmological constant which shows that our two best ways of understanding the universe contradict one another. Combining cuttingedge science with an entertaining cosmic quest Fantastic Numbers and Where to Find Them is an electrifying headtwisting guide to the most fundamental truths of the universe.