The Cosmos: A Beginner's Guide

Life in the Cosmos (1x1)

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Series exploring the cosmos. Adam Hart-Davis joins alien hunters at a huge new telescope in California dedicated to receiving the first message from intelligent beings. Janet Sumner investigates a new way to detect life on Mars, using a probe made with living material from Earth. And Adam asks: what if the aliens are listening to us? He finds out how far into the cosmos our ancient broadcasts have travelled.