The cosmological models of the Big Bang and the Steady State both attempt to reconcile the observation of cosmological red-shift with the large-scale structure of the cosmos.
Describe one aspect of cosmological red-shift that both theories successfully explain, and one cosmological observation that eventually led to the widespread rejection of the Steady State theory in favour of the Big Bang model.
53 exam-style questions on Edexcel GCSE Physics 7.2 The Universe and red-shift. Each one has a worked solution and a mark scheme showing where the marks go.