a: Four types of shadow regions-umbra (U), inner penumbra (P2), outer

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Umbra, penumbra and antumbra - Wikipedia

How long does it take for the moon's shadow to move across Earth

Morning name: penumbra

a: Four types of shadow regions-umbra (U), inner penumbra (P2

Mrs. Flynt's Wiki Page / umbra

Incorrectly rendered penumbra region (left) and 2D illustration of the

a: Four types of shadow regions-umbra (U), inner penumbra (P2

Eclipses

a) hard shadow shows the umbra, and (b) soft shadow explains

How long does it take for the moon's shadow to move across Earth

a: Four types of shadow regions-umbra (U), inner penumbra (P2

Subtle lunar eclipse July 4 – 5 – Stephens Memorial Observatory