Uploaded June 2018 | Updated September 2026, 2 weeks ago

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Scientists are leaping exponentially closer to finding life beyond Earth. Missions to Mars and Saturn’s moons are prime candidates for finding the first signs of life and NASA can now identify more than 3,500 planets outside our solar system, many with habitable temperatures. That number is quickly growing as space travel technology improves and probes head deeper into the galaxy. Nuclear physicist Taylor Wilson explores one of our civilization's most perplexing questions: Are we alone?

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