The second shadow in an eclipse is known as the penumbra (pronounced peh NUM bruh). This partial outer shadow is lighter than the umbra and gets larger as it goes away from the sun. Lunar ...

The second shadow in an eclipse is known as the penumbra (pronounced peh NUM bruh). This partial outer shadow is lighter than ...

The second shadow in an eclipse is known as the penumbra (pronounced peh NUM bruh). This partial outer shadow is lighter than the umbra and gets larger as it goes away from the sun. Lunar ...

1:09 a.m.: A partial eclipse begins as the moon enters Earth's umbra and starts to darken ... as the moon slowly exits the Earth's penumbra. While lunar eclipses are relatively rare, when they ...

The second shadow in an eclipse is known as the penumbra (pronounced peh NUM bruh). This partial outer shadow is lighter than the umbra and gets larger as it goes away from the sun. Lunar eclipses are ...

In a total lunar eclipse, the entire moon falls within the darkest part of Earth's shadow, called the umbra. Because of ... the moon slowly exits the Earth's penumbra. For this eclipse, the ...