Is there life out there?  Either on other worlds, deep space, or even deep in our oceans that we haven`t encountered yet?  Our panel of experts discusses the possibilities, and if there is life, what it may be like.

A BBC/OU/Vega video.

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Chaired by Colin Blakemore, the panel consists of Barrie Jones, Julian Hiscox, Monica Grady, and Bob Lambourne.