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Nicolas Bonne, Public Engagement and Outreach Fellow/Tactile Universe Project Lead, University of Portsmouth

Curious Kids: how many galaxies are there in the universe?

Milky way Sun Hong Kong
Sunti/Shutterstock

How many galaxies are there beyond the Milky Way? – Rosella, aged 15, Hong Kong

A galaxy is a massive collection of gas, dust and billions of stars all bound together by the force of gravity. Galaxies are also huge, measuring billions of billions of kilometres across.

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