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Earth and Sky Photo Contest 7
Comet Lovejoy, Earth's Horizon (NASA, International Space Station, 12/22/11)
Uluru Waterfalls, Australia
Melbourne - Australia
Two amazing sources of light - The Milkey Way and bio-luminescent plankton - Vincentia - New South Wales - Australia
Australia's Amazing Bioluminescent Lake. An unusually high concentration of Noctiluca scintillans, a bioluminescent microorganism, turned the water a bright, glowing, ethereal blue.
Ball's pyramid, the world's tallest seastack, off the Eastern coast of Australia.