Are we alone?

Are we alone? Might Earth be the sole exception to an otherwise dead universe? We shouldn’t be. The ingredients for life are everywhere — life should be common. But then, where is everyone? In this episode we explore the three possible answers to this question. By the time you finish listening, you will have a firm grasp of the relevant science, enough to form an opinion on which answer is probably right. Beginning: 00:00 Episode start: 00:25 Requirements of life: 00:55 Matter: 01:41 Energy: 03:38 Time: 05:45 Tenacity of life: 08:25 Extremophiles: 09:22 Panspermia: 11:12 The Fermi Paradox: 15:22 The Drake Equation: 17:23 Our search for ET: 20:46 Listening for signals: 21:11 Looking for planets: 24:26 Searching for artifacts: 28:49 Sending our Greetings: 31:55 The Arecibo message: 32:13 The Golden records: 34:00 Solutions to Fermi's Paradox: 36:18 We are alone: 38:00 They isolate: 46:39 They are here: 59:05 Conclusions: 01:02:35 Credits: 01:06:03 Other formats: Podcast: https://podc