Created on September 22, 2015
A Blood moon known as a ‘tetrad’ will take place on September 28th, which is just the fourth lunar eclipse in two years.
So why will the moon be a ‘blood’ red colour? When the earth eclipses a full moon the direct sunlight is blocked, but the sun's rays still light up the moon. However this light has already traveled through the Earth's atmosphere first, and hence causing the totally eclipsed moon to look red or brownish .
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