For quantum computers to deliver on their promise to revolutionize numerous industries, they will need to be kept colder than the coldest natural place in the known universe. I set out to answer how and why. 0:00 The Quantum "Chandelier" Explained 1:22 Why Quantum Computers Need to Be Cold 2:00 Classic Bits vs. Qubits 2:50 What is a Qubit? 3:45 How the Dilution Refrigerator Works 4:48 The Role of Helium-3 and Helium-4 5:49 Harvesting Helium-3 from the Moon 6:02 The Future of Quantum Computing