Be prepared to see a beautiful, blood-red moon light up the night sky on October 8 as the second total lunar eclipse of 2014 occurs.
An even rarer event could also take place: a selenelion. As our friends at DNews explain:
"On Oct. 8, Interested skywatchers should attempt to see the total eclipse of the moon and the rising sun simultaneously. The little-used name for this effect is called a "selenelion," a phenomenon that celestial geometry says cannot happen.
And indeed, during a lunar eclipse, the sun and moon are exactly 180 degrees apart in the sky. In a perfect alignment like this (called a "syzygy"), such an observation would seem impossible. But thanks to Earth's atmosphere, the images of both the sun and moon are apparently lifted above the horizon by atmospheric refraction. This allows people on Earth to see the sun for several extra minutes before it actually has risen and the moon for several extra minutes after it has actually set."
The eclipse will begin at 6:25 a.m. ET and and last until 7:24 a.m. ET, according to NASA.
The October 8 event is the second eclipse of four in a lunar eclipse tetrad; there are eight sets of tetrads in the 21st century, eclipse expert Fred Espenak said.
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