2016年8月8日 星期一

Half the Park is After Dark: Stargazers Celebrate U.S. National Parks Centennial

On August 25th, 2016, the U.S. National Park Service is celebrating its Centennial. That’s 100 years of protecting the lands and the night skies so that people from around the world and all walks of life can come and see the stars!

from Planetary Society Blog http://ift.tt/2aFN9OS
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