The idea of proof is fundamental to mathematics. We could argue that science consists of testable theories, and therefore that it is about what can be disproved, not what can be proved. In law, the test is “beyond reasonable doubt”. Famous conjectures in mathematics have been tested by computers for trillions of numbers – but […]

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The final lecture in the series returned to the theme of how insight is derived from observations, considering the cosmic microwave background. This oldest light in the Universe, emitted just 400,000 years after the Big Bang, contains the seeds of the structures we see around us, and tells us about conditions at the Universe’s beginning. […]

Read more "First light: Revealing the Early Universe"