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Curious Kids: will time ever stop?

By Or Graur, Senior Lecturer in Astrophysics, University of Portsmouth

Will time ever stop? – Casandra, aged 11, Epsom, UK

Time began when the universe did. How – and if – the universe ends will determine whether time will end as well.

We think the universe started out squeezed into an infinitely small space. For some reason we do not yet understand, the universe immediately started to expand – to get bigger and bigger. This idea, or “model”, of the beginning of the universe is called the Big Bang.

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