Extraterrestrial Life: How Close Are We to Finding Aliens? | Full Documentary

Are we alone in the universe, and what would happen if an advanced alien civilization found Earth? Scientists search for extraterrestrial life on Mars, icy moons and distant exoplanets while SETI listens for signals from intelligent civilizations. From 51 Pegasi b and Kepler-452b to the mysterious Wow! signal, the documentary examines how close humanity may be to discovering life beyond our planet.

But first contact could carry enormous risks. The film explores the Voyager Golden Record, the Arecibo Message, Breakthrough Starshot and the debate over deliberately announcing Earth's existence to the cosmos. Scientists and military experts then confront the darkest possibility: if a civilization capable of interstellar travel arrived as a conqueror, could humanity defend itself, or would technological superiority make an alien war impossible to win?

#alien #interstellar #extraterrestrial #documentary


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