JOHN CHUMACK / SCIENCE PHOTO LIBRARY JOHN CHUMACK / SCIENCE PHOTO LIBRARY
Star trails around Polaris, or the North Star, seen from Dexter, Iowa. Because Polaris lies nearly in a direct line with the axis of Earth's rotation, it stands almost motionless in the sky. Photographed with a Canon Rebel Xsi, ISO 800, 8mm lens @ F4.
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