This image comes from a friend of a friend. In case you haven't heard, Egypt is in turmoil as the people try to topple the government and send their President Mubarak packing, ending his reign that began in 1981.
Tahrir Square, Cairo
Hidden craters reveal Earth may once have had a ring—like Saturn
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The rings of Saturn are among the most famous and spectacular features in
the solar system. Earth may once have had something similar.
20 minutes ago
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