APOD
Astronomy Picture of the Day
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
Colors of the Moon
Explanation: What color is the Moon? It depends on the night. Outside of the Earth's atmosphere, the dark Moon , which shines by reflected sunlight, appears a magnificent ly brown-tinged gray. Viewed from inside the Earth's atmosphere , though, the moon can appear quite different. The featured image highlights a collection of apparent colors of the full moon documented by one astrophotographer over 10 years from different locations across Italy . A red or yellow colored moon usually indicates a moon seen near the horizon. There, some of the blue light has been scattered away by a long path through the Earth's atmosphere , sometimes laden with fine dust. A blue-colored moon is more rare and can indicate a moon seen through an atmosphere carrying larger dust particles. What created the purple moon is unclear -- it may be a combination of several effects. The last image captures the total lunar eclipse of 2018 July -- where the moon, in Earth's shadow , appeared a faint red -- due to light refracted through air around the Earth . The next full moon will occur at the end of this month ( moon-th ) and is known in some cultures as the Beaver Moon .
| Date | November 11, 2020 |
|---|---|
| Credit | Image Credit & Copyright: Marcella Giulia Pace |
| Authors & editors: | Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) |
| A service of: |
ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. |



