August 28, 1789
The Night Saturn Gained a Moon
William Herschel's discovery of Saturn's moon Enceladus on August 28, 1789
A nearly unfinished telescope, a fading ring system, and one tiny point of light brought William Herschel a new moon on August 28, 1789. The discovery began as a barely visible speck—and ended by revealing how much more complicated Saturn’s system could be.
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