Friday, September 4Last Quarter Moon occurs at 3:51 A.M. EDT Have you heard of the “demon star,” Algol? This strange sun is actually two stars in a system known as an eclipsing binary. As the name would suggest, as they orbit, one star regularly passes in front of and eclipses the other from our pointContinue reading “The Sky This Week from September 4 to 11: The Moon joins Jupiter and Mars”
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