> and it should have the same angular size from Earth as the angular size of the Sun. Technically you need a bit more than that, for its umbra to block out the

> and it should have the same angular size from Earth as the angular size of the Sun. Technically you need a bit more than that, for its umbra to block out the entire photosphere over the entire Earth: https://en.wikipedia.org/wiki/Tangent_lines_to_circles#Outer_tangent https://en.wikipedia.org/wiki/Tangent_lines_to_circles#Outer...