BABAK TAFRESHI / SCIENCE PHOTO LIBRARY BABAK TAFRESHI / SCIENCE PHOTO LIBRARY
Timelapse of star trails forming over the Large Binocular Telescope (LBT) on Mt. Graham in Arizona, USA. This giant observatory combines two side-by-side 8-metre telescopes, making it one of the world's largest telescopes. In resolution the two mirrors are equal to a single 23-meter mirror.
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