On Oct. 10, 1846, William Lassell peered through his 20-foot reflector in Liverpool, England. Lassell was a self-funded amateur astronomer who had made a fortune as a brewer, and he’d built his own scope – apparently doing quite a good job of it, since through it, Lassell spotted Triton orbiting Neptune. Neptune itself had beenContinue reading "Oct. 10, 1846: The discovery of Triton"
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