A special podcast series from New Humanist to mark the fourth year of our annual rationalist shows Nine Lessons and Carols for Godless People, and the release of the 20-track CD of last year's show, available now for £12 from gofasterstripe.com.

On the fifth day of Godless Christmas, we bring you a section from the set of one of last year's special guests, Ed Byrne, who talks about hanging out with Cern physicists and how Brian Cox's Wonders of the Solar System has left him with an intense sense of planetary pride.

Note: if there are kids around, this clip contains a spot of industrial language, specifically of the F-word variety.