It's been 50 years since Philip Morrison and Guiseppe Cocconi published their seminal scientific paper on SETI in the journal Nature, and since Frank Drake first used the Tatel telescope in Green Bank, West Virginia, to attempt to detect any radio signals from technologies he thought could be orbiting the nearby stars of Tau Ceti and Epsilon Eridani.

CNN: What if there's somebody else out there?

Graeme Morrison, Sean Lamont, Jason White and Allister Hogg are also brought in as other changes head coach Frank Hadden has made from the side that beat Canada.

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