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How did scientists use eclipses to prove Earth was round?

During a lunar eclipse, Earth shadow's on the Moon is circular.
During a solar eclipse we can see the Earth's circular shape.
The shadow of Earth's shape can be seen on the Sun.

Please dont answer just because you want points.

2 Answers

2 votes
During a lunar eclipse,Earth shadows on the moon is circular
User Garrows
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3 votes
the first one is correct- during a lunar eclipse, earths shadow on the moon is circular.
User Jamboree
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