An observatory measures the microwave radiation arriving from four directions in the sky. The results are shown in the table.
| Direction | Temperature of a body that would emit radiation matching that detected (K) |
|---|---|
| North | 2.72 |
| East | 2.70 |
| South | 2.73 |
| West | 2.71 |
Explain how these results support the Big Bang theory rather than the Steady State theory.
94 exam-style questions on Edexcel GCSE Physics 7.2 The Universe and red-shift, covering 7.2.1 Big Bang and Steady State theories, 7.2.2 Evidence for the Big Bang, 7.2.3 The Doppler effect and red-shift, 7.2.4 Red-shift as evidence for an expanding Universe, and 7.2.5 The CMB and the accepted model. Each one has a worked solution and a mark scheme showing where the marks go.