Seen as a pale green spec among the stars of Cassiopeia, Comet Hartley 2 shines in this four-minute exposure taken on the night of Sept. 28, 2010, by NASA astronomer Bill Cooke. (NASA) PALE GREEN HORSE OF THE APOCALYPSE: And when the Lamb broke the fourth seal, I heard the fourth living being say, Come! And I looked up and saw a horse whose color was pale green like a corpse. And Death was the name of its rider, who was followed around by the grave. They were given authority over one-fourth of the earth, to kill with the sword and famine and disease and wild animals. Revelation 6:7-8