In this talk, Ron puts humanity back at the centre of the cosmos. He begins by admitting that the cosmos seems to dwarf us human beings. We are intimidated by the scale of the universe and thus we can feel small. The universe’s immensity is framed by space and time: these are the dimensions that make the cosmos ‘big’ and us humans ‘small’. But then Ron explains how Einstein’s theory of relativity turned that world upside down. It turns out that light is the only constant, and space and time shrink the faster we approach the speed of light. All the time that Ron speaks, we were thinking about Jesus when he said, ‘I am the light of the world’…..