Tonight’s ‘Super Snow Moon’ Could Be A Celestial Treat
- 2019/02/20 21:40:02 投稿
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A 'supermoon' occurs when a full moon coincides with the moon's perigee, or the point in its elliptical orbit at which it is closest to the Earth. This makes the moon appear up to 14 percent larger and 30 percent brighter than usual. https://www.evolving-science.com/space/super-snow-moon-00931