AUDIO: Are we alone in the Milky Way?

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Professor Brian Cox: Are we alone in the Milky Way?

October 20, 2014 at 11:29 clock Updated BST

The third program of the human universe Brian Cox series on BBC 2 on Tuesday night.

In it, Professor Cox will ask: Is there anybody out there? Prof Cox examines whether life on Earth is unique in the Milky Way and what it means.

First broadcast in the program today, October 20, 2014

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