According to NASA, seeing four complete lunar eclipses in a row is very rare. The skies were tetrad-free from 1600 to 1900.
The most unique thing about the 2014-2015 tetrad is that all of them are visible for all or parts of the USA," NASA eclipse expert Fred Espenak told CNN.
The heavens are putting on a celestial show and one Christian pastor is convinced it’s a sign from God. Bestselling author and televangelist Pastor John Hagee claims the four blood moons that will soon appear in the skies over America are evidence of a future “world-shaking event.” Further Reading