Question

Eclipses quick check during an eclipse what is the penumbra is it part of the earth shadow where the sun is only partially blocked is it the part of the Moon Shadow where the sun is completely blocked is it part of the Moon Shadow where the sun is only perfectly blocked is it part of the Earth's shadow where the sun is completely blocked
GPT 3.5
During an eclipse, the penumbra is the part of the Earth's shadow where the sun is only partially blocked.