1994 Photo Contest, Science & Technology, 1st prize

Roger H. Ressmeyer

Ressmeyer-Starlight for National Geographic

01 January, 1993

Carbon dioxide snow is used to clean the telescope at Keck Observatory. This is the world's largest mirror, consisting of 36 hexagonal segments. Leading edge technology enables scientists to examine even the most remote reaches of the universe. Distorting atmospheric effects are studied with the aid of laser beams, and computers use telescope optics to create images of unprecedented clarity.

About the photographer

Roger H. Ressmeyer

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