How to measure the Universe

6.00pm to 7.15pm, Saturday 25 February

The Theatre

This event has already taken place

  • A Cepheid variable star

    Credit: NASA via Wikimedia


Standard £14


Concession £10


Members and Patrons £7

Event description

Our Universe is, at the very least, 100 billion light years – or 1,000,000,000,000,000,000,000,000,000 metres – across. But where does this number come from? How can we measure the distance to even the nearest star when we’ve never visited? And, at a time when cosmologists reckon our Universe may be just one of many in a giant multiverse, will we ever truly grasp the magnitude of what’s out there? Join us on a voyage into the farthest reaches of space and time. 

This talk is particularly suitable for ages 11+.

About the speaker

Dr Andrew Pontzen is a cosmologist at University College London. His research, for which he was awarded the Royal Astronomical Society’s 2016 Fowler Award, focuses on the way that galaxies and other structures have formed in our Universe. He is also an experienced communicator of science on radio, TV and at events across the UK.


This event will be filmed and on the Ri Channel within a few months. Subscribe for free to hear when new videos are released.

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