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

The Parts of the Moon's Shadow

Subtle lunar eclipse July 4 – 5 – Stephens Memorial Observatory

Glossary

Glossary

The Van Allen Probes Electric Field and Waves Instrument: Science

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

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

Parts of Shadow(Umbra and Penumbra)

Discover the Mysterious Penumbra: The Almost Shadow

Shadow Science – Types of Shadows

Eclipses

Umbra & Penumbra Lesson for Kids: Definition & Facts - Lesson

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