809635 — Alone in the Universe?
Over 5,000 exoplanets have been discovered, and astronomers estimate a trillion more in our Milky Way. What are the odds life exists beyond Earth? This program explores humanity's quest to answer this profound question. We'll examine how NASA and others search for extraterrestrial life, from robotic missions exploring asteroids, moons, and planets to telescopes scanning distant worlds. We'll also consider Frank Drake's famous equation, a framework for estimating intelligent civilizations, while exploring the scientific discoveries and philosophical implications of the search for life beyond Earth.