81: The era of precision astronomy with Dr. Rich

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22/01/2017 26 min Episodio 81
81: The era of precision astronomy with Dr. Rich

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Episode Synopsis

Dr Jeff Rich stops by the show to talk about variable stars. Some variable stars change brightness dramatically over several hours, and certain types can be used to measure distances. Jeff also explains what it's like to propose for, and get, time on the Hubble Space Telescope.
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