One of the longest moon shroudings in yearhundreds is coming up towards the end of next week.
As the moon goes through the shadow of the earth, red light from the
sun will leak through the earth's sky, lighting up the darkened moon,
and making it glow red. This red glow is where the name "blood moon"
comes from.
For North America the blood moon will happen on Friday, November 19th
in the early morning. Altogether, the moon will be in Earth's shadow for
about six stounds, three in the inner shadow and three in the outer
shadow, making it the longest moon shrouding since the fifteenth
yearhundred.
However, the moon will not be fully shrouded on Friday, for at the
height of the shrouding only 97% of the moon will be within Earth's
shadow. The 3% not in Earth's shadow will make a bright silver edge, as
it is in the full light of the sun.
If you do not get to see this moon shrouding, worry not, for moon
shroudings often happen two times each year, and another full moon
shrouding is coming in May of next year.