Answer:
- An example of the penumbra is the outer lighted area surrounding the shadow of the moon which is created during an eclipse. An outlying surrounding region; a periphery. (astronomy) A region around the edge of a sunspot, darker than the sun's surface but lighter than the middle of the sunspot.
Step-by-step explanation:
It is the lighter outer part of a shadow, and it is a factor that causes partial solar eclipses, penumbral lunar eclipses, and partial lunar eclipses. You can consider it a shadow within a shadow