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10 incredible images of the sun

By: Katherine Butler on May 2, 2011, 11:38 a.m.
part of a robot with the curve of the earth and the sun shining in the distance

Photo: NASA

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Robot over the horizon

To some, the sun is just another main-sequence G2 star, one of about 100 billion that exist in our galaxy. These might exist on an exo-planet beyond the reaches of our Milky Way. The sun is what the Romans called Sol and the Greeks called Helios. It is the center of all life and energy for Earth. Here the sun can be seen just over Earth's horizon from the viewpoint of the Space Shuttle Endeavor. (Text: Katherine Butler)