npr: sciencefriday: This team of early female astronomers created the star classification system we use today. In the late 19th century, astronomy was a growing field. At the time, Edward Pickering, the director of the Harvard College Observatory, was

npr: sciencefriday: This team of early female astronomers created the star classification system we use today. In the late 19th century, astronomy was a growing field. At the time, Edward Pickering, the director of the Harvard College Observatory, was

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from: https://hobomechanist.tumblr.com/post/154489454405