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How do we know the Earth is spherical? (signed) - Earth and space: Video playlist - BBC Bitesize
A look at the evidence for the Earth being round or spherical.
↗ https://www.bbc.co.uk/bitesize/topics/zgwxfg8/watch/zkctb9qA look at the evidence for the Earth being round or spherical.
↗ https://www.bbc.co.uk/bitesize/topics/zgwxfg8/watch/zkctb9q