Alien space probes? Are there alien civilizations? The search for extraterrestrial intelligence has mainly focused on searching for radio signals. However, John Michael Godlier spoke with Dr. Robert Zubrin about a new theory he proposes which posits that alien space probes would be seeding life throughout the universe using bacteria. Are alien civilizations sending signs? If so, Dr. Zubrin proposes that we search for these microbes, a form of deep space communication, within our own solar system on Mars, Venus, and Titan. He also asks if bacteria was sent to Earth from another intelligent alien civilization as a form of panspermia.

The Case for Space: How the Revolution in Spaceflight Opens Up a Future of Limitless Possibility By Robert Zubrin: https://amzn.to/2Issyjh

Season 2, Episode 18 – Closed Captions