Sir William Pickering, St Helen’s, Bishopsgate, 1574.

William Henry Pickering of Harvard, who suggests adopting a method of flashing messages when that planet approaches the earth to within 35,000,000 miles, or 5,000,000 miles nearer than ever before ...

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Everyone's favorite dwarf planet, Pluto, was discovered just 95 years ago. Here's the story of how the once-ninth planet was discovered. In the early 20th century, the businessman, astronomer, and ...

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