Huh? Science Explained: How do scientists know how old the Earth is?

Cosmos Magazine


Cosmos is a quarterly science magazine. We aim to inspire curiosity in ‘The Science of Everything’ and make the world of science accessible to everyone.

By Cosmos

The Science Briefing is a LiSTNR production.

We’re travelling back in time to understand how old our small blue dot is – and how scientists worked it out.

Amalyah Hart is a science journalist at Cosmos Magazine. She has a degree in archaeology and anthropology and a masters in journalism.  

Read more: How do we know the age of our planet?

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