Lunar Eclipse Turns Moon Blood Red (Actual Video, December 10, 2011)

A total lunar eclipse, which was viewed across Asia, Australia and the United States, took place on December 10, 2011.

The lunar eclipse, the second of two total lunar eclipses this year with the first having occurred last June 15, had turned the moon blood red, giving stargazers a rare visual treat.

The moon usually turns brown during an eclipse, but on Saturday it turned reddish caused by the amount of ash in the Earth's atmosphere, a clear indication of pollution up in the air, experts say.

Here’s the actual video of the December 10, 2011 lunar eclipse:

A lunar eclipse occurs when the Moon passes behind the Earth so that the Earth blocks the Sun’s rays from striking the Moon. This can occur only when the Sun, Earth, and Moon are aligned exactly, or very closely so, with the Earth in the middle.

The next total lunar eclipses will occur twice in 2014, the first on April 15 and the second on October 8.