Most information from outer space reaches us at the speed of light and this governs our understanding of time and evolution in the cosmos. When we observe the Universe, we are 'looking back in time': we see the Universe as it was, not how it is. This is actually very helpful as we seek to discern and understand cosmic history and how the Universe has changed since earlier times.

A lecture by Katherine Blundell OBE, Gresham Professor of Astronomy 23 October

The transcript and downloadable versions of the lecture are available from the Gresham College website:
https://www.gresham.ac.uk/lectures-and-events/frozen-in-time

Gresham College has been giving free public lectures since 1597. This tradition continues today with all of our five or so public lectures a week being made available for free download from our website. There are currently over 2,000 lectures free to access or download from the website.

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