The Moon can appear red during a total lunar eclipse. What does the eclipsed Moon look like after a recent eruption leaves a large amount of volcanic ash in the atmosphere?
Shawn Trueman
Rochester, Minnesota
During a total lunar eclipse, the Moon passes through Earth’s shadow, called the umbra. Our natural satellite isn’t completely dark during the event, however. Earth’s atmosphere bends, or refracts, sunlight that passes within a few miles of the ground (in the lower tropo