Friday, January 29, 2010

APOD Blog 2

http://apod.nasa.gov/apod/
This is a beautiful photograph of the planet Mars. It was able to be captured like this because Mars is at opposition tonight, which means opposite the Sun in the planet Earth's sky. Another reason why Mars is so easy to see is because it appears so close to the Full Moon. In the photograph mars is 99 million kilometers away. There is a large white spot on the upper right and its called the north polar cap. Mars also has a tiny red disk which is about one one hundreth the diameter of the Full Moon.

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