Assertion: moon's shadow | /r/HasProperty | umbra
Facets:
Source sentences:
text: This appears only during the full moon when it passes through earth’s shadow, i.e. umbra or penumbra.
text: The initial and final stages — when the moon is in the penumbral shadow — are not so noticeable, so the best part of an eclipse is during the middle of the event, when the moon is in the umbral shadow.
text: You can only see a total solar eclipse if you're in the path where the Moon's casts its darkest shadow, the umbra.