1 00:00:00,380 --> 00:00:03,480 A lunar eclipse as seen from Earth is leisurely, 2 00:00:03,480 --> 00:00:05,480 taking three hours or more. 3 00:00:05,780 --> 00:00:07,680 When the moon enters the umbra, 4 00:00:07,680 --> 00:00:11,760 a dark biteout appears and grows - the partial phase. 5 00:00:12,040 --> 00:00:14,860 When the moon is entirely inside the umbra, 6 00:00:14,860 --> 00:00:18,740 totality begins and can last for an hour or more. 7 00:00:19,500 --> 00:00:22,960 The moon appears red because the only light reaching it 8 00:00:22,960 --> 00:00:25,460 is refracted through Earth's atmosphere. 9 00:00:26,280 --> 00:00:30,880 One side may be brighter than the other because it is closer to the edge of the umbra. 10 00:00:31,560 --> 00:00:35,500 When part of the moon emerges from the umbra, totality is over. 11 00:00:35,960 --> 00:00:39,840 When all of the moon emerges, it's the end of the eclipse.