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. Hence, there is always a full moon the night of a lunar eclipse. On December 20-21, 2010, I captured a piece of the episode, which occurred in my area (Calgary, Alberta, Canada), on Monday night, around 11:30 PM. I stopped recording shortly on Tuesday night, about 12:40 AM. The following youtube link is a 7-minute edited version of my work. Enjoy and share the moment with your family and friends.