Stars, Cosmology and the Beginning of the Universe

27 November 2005
Presented by Chris Smith, Kat Arney.

This week we dive into deep time as cosmologist Mike Hobson explains how we measure the universe, the distance of the nearest galaxy, how scientists calculate the life span of the sun, and the definition of a light year, Chris Voigt describes how he made a 100 megapixel camera from bacteria, and Derek and Dave cook up a treat in Kitchen Science.

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