Martin Rees: What is an Alien?

474 views · Published 30 August 2018 · 0:52 · Indexed 26 October 2026

Channel: Breakthrough · 2018 · Science & Technology

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Humankind has been looking for aliens for a long time and we still haven't seen them. Why not? And what are we more likely to find - organic or machine life? Renowned astrophysicist Lord Martin Rees gives us his theory in this Breakthrough Discuss video series.

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