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Originally Posted by Bravo Awesome photos...what exactly caused the reddish color?? |
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Lunar eclipse - Wikipedia, the free encyclopedia
or c&p...
The red colouring arises because of the scattering of sunlight in the Earth's atmosphere. Sunlight reaching the Moon must pass through a long and dense layer of the Earth's atmosphere, where it is scattered by dust particles. Shorter wavelengths are more likely to be scattered by the small particles, and so by the time the light has passed through the atmosphere, the longer wavelengths dominate. This resulting light we perceive as red. This is the same effect that causes sunsets and sunrises to turn the sky a reddish color; an alternative way of considering the problem is to realise that, as viewed from the Moon, the Sun would appear to be setting (or rising) behind the Earth.