The final lecture in the series returns 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.
It will also consider how measurements of the Universe's expansion, made using the CMB, are leading to unexpected results, creating tension in modern cosmology.
This lecture was recorded by Chris Lintott on 29th May 2024 at Conway Hall, London
The transcript of the lecture is available from the Gresham College website:
https://www.gresham.ac.uk/watch-now/first-light
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