@THE awesomest: You can still view the lunar eclipse if you are color blind but I’m guessing that a person who is red-green colorblind, might not be able distinguish the color of the Moon during totality.

Stars are all different colors. Our Sun is yellow, other stars are red, orange, white, or blue. The constellation Orion has a bright red star (Betelgeuse) and a bright blue star (Rigel) in it. You can view Orion all winter in the night sky. Check skymaps.com for more constellations that are up during the month of December.

Planets and comets don’t really change color. Comets that swing nearby the Sun can have ion tails that might be blue or greenish. Hale-Bopp and Comet Hartley 2 are good examples. Uranus and Neptune are two vibrantly colored planets due to the methane in their atmospheres – Uranus is a light blue-green and Neptune is a darker purplish blue.

Also, a SOLAR eclipse is when the Moon passes in front of the Sun (i.e. the Sun is behind the Moon). Another way to explain a solar eclipse is that the Moon is casting its shadow on Earth. It’s a really small shadow and only a small swath of Earth is covered during this time. At its largest, the Moon’s shadow is ~160 miles in diameter and. For a LUNAR eclipse, if you can see the Moon (only half the Earth can see it at a time) during the time of the eclipse, you will be able to see parts or all of the eclipse.