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The people of Florida, USA have just witnessed the night sky with a fanciful purple color after the storm hit the coastal area on the east coast of the United States.

A study by Chinese scientists said water on the Moon could affect their plan to install telescopes on the satellite in 2013.

Glenn Smith, a professor at the Georgia Institute of Technology (USA), explained this problem: seawater is actually colorless but because it reflects the sky's blue color, we often