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HCA to Study Star Brightness
Hill Country Astronomers (HCA) will meet at 6:30 PM, Monday, July 3, at Hill Country University Center in Fredericksburg. We will view Dr. Alex Filippenko’s video lecture entitled “The Intrinsic Brightnesses of Stars.” Instead of just observing the apparent brightness of a star, Dr. Filippenko discusses how astronomers can extract information on a star’s true brightness – how bright it is independent of distance and the obscuring effects of interstellar dust and gas.
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