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50 Years Ago an Astronomer Discovered the First Unambiguous Exoplanet (or So He Thought)


In April 1963, at a meeting of the American Astronomical Society in Tucson, Ariz., Peter van de Kamp made what should have been a landmark announcement. By tracking the motion of a dim, nearby star across the night sky, he had uncovered an unseen object tugging ever so slightly on the star and perturbing its [...]

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