How did 19th-century astronomers map Mars?

Grab your space swimsuit, Izzie and Dr Becky explore Mars' wet past. When did the red planet have water? Where did it go? And were there canals on Mars? 

Thank you to Joe McNeil from the Natural History Museum and Sian Prosser from the Royal Astronomical Society. 

If you like this topic, you might want to check out the NHM's new exhibition Space: Could life exist beyond Earth?

Don't forget to join The Supermassive Club for ad-free listening, forum access, and behind the scenes from the team. 

The Supermassive Podcast is a Boffin Media production. The producers are Izzie Clarke and Richard Hollingham. 

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