View Full Version : Why Was Septemberís Lunar Eclipse So Dark?

2015-Oct-05, 01:21 PM
First off, a huge*thank you to everyone who made and sent their*Danjon scale estimate of the totally-eclipsed Moon’s brightness to Dr. Richard Keen, University of Colorado atmospheric scientist. Your data were crucial to his study of how aerosols in Earth’s atmosphere and other factors influence the Moon’s appearance. Keen received a total of 28 observations […]

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