First of Four Blood Moons Emerges in Night Sky

The first lunar eclipse in a tetrad, a group of four complete consecutive lunar eclipses, happened Monday night. The moon took on a reddish hue between 2 a.m. and 4:30 a.m Tuesday.

The eclipse was visible for it's entirety only over the Americas and the Pacific Ocean.

Three more will complete the tetrad before October 2015, with each one falling on a Jewish feast. Tuesday's eclipse fell on Passover, and the next one will take place during the Feast of Tabernacles.

According to NASA, seeing four lunar eclipses in a row is very rare. None happened from 1600-1900, but many are expected to occur in the 21st century.

Some Biblical scholars have attributed special significance to lunar eclipses.