RICHARD W. BROOKS / SCIENCE PHOTO LIBRARY RICHARD W. BROOKS / SCIENCE PHOTO LIBRARY
Comet Bennett visible in the sky over Palo Alto, California, 1970. It was discovered by John Caister Bennett on December 28, 1969. Comet Bennett passed closest to Earth on March 26, 1970. At that time the average brightness was around 0, while estimates of the tail length ranged from 5 to 10 degrees.
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