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Its story

Equuleus is the second smallest constellation in the sky, a tiny equestrian figure pressed near Pegasus. There glows this white A-type star — young and hot — whose light took about 247 years to arrive. It set out when Lavoisier was shaping modern chemistry and overturning the old phlogiston theory, just as France was entering the upheaval of its Revolution. This white light has crossed the Age of Enlightenment and two World Wars without learning of any of it, faithful only to its own speed.