By combining a series of 30-second exposures, astronaut Don Pettit captures circular star trails centered on the station's axis of rotation, along with green airglow on the horizon, smeared-out city lights and lightning storms below.
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Each second there are 50-100 cloud-to-ground #lightning strikes to the Earth world wide. Other transfer between the #clouds, never striking the earth. The enormous electrical discharge is caused by an imbalance between positive and negative charges. #storm #stormclouds #NYC
Lightning, Iran After three years I went to visit my family in Iran. We traveled to the city of Mahmood Abad in the north of Iran and had the most amazing time together. One night as I was walking on the shore of the Caspian Sea with my sister, I saw distant lightning. I ran to the hotel, grabbed my camera and tripod, and came back. I took many long exposures, but it was only in the second shot that I captured the biggest, most beautiful, and the last lightning of that night.