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www.space.com | ||
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www.leonarddavid.com
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| | | | | The U.S. Air Force's X-37B miniature space plane has winged past 340 days of flight performing secretive duties during the program's fifth flight. | |
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www.tomsguide.com
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| | | | | The latest Google Gemini news, comment, reviews and features from the experts at Tom's Guide | |
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theconversation.com
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| | | | | In 2006, and after much debate, the International Astronomical Union came up with a new definition for a planet. And for the first time, the term "dwarf planet" was used. | |
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psl.noaa.gov
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| | | US Department of Commerce, NOAA, Physical Sciences Laboratory | ||