Yeah this videonwas great. Some years ago I visited Kitt Peak observatory and the astronomer pointed out something I had never appreciated before. If you have a

Yeah this videonwas great. Some years ago I visited Kitt Peak observatory and the astronomer pointed out something I had never appreciated before. If you have a big enough open sky to observe and turn against the sunset you can observe the Earth's shadow in atmospher. A cool site that few l ever turn to appreciate.