Question #4f06d

1 Answer
Jan 11, 2017

See explanation


The revolving Earth's umbra ( shadow cone ) is larger at its base (

Earth ) and longer at its vertex

In contrast, base of lunar umbra is about

# (1737/6378)^2=(1/13.5)^(th)# , nearly, in comparison, and the vertex

is nearer to the base.

So, Moon crossing Earth's shadow, for lunar eclipse, happens more

often than the Earth crossing lunar shadow, for solar eclipse.

This is also the reason for not having solar eclipse over the Earth's

hemisphere. Only a narrow band across experiences total solar