ON EXPLORATIONS: how Henrietta Leavitt helped Edwin Hubble

Edwin Hubble determined that the universe was expanding, and he used the results of a woman astronomer, Henrietta Leavitt, to show this remarkable result.

Explorations is an hour-long radio program on science, technology, politics, and the environment. Topics covered include black holes, time travel, higher dimensions, string theory, wormholes, search for extra-terrestrial life, dark matter and dark energy, the future of space travel, genetic engineering, the aging process, the future of medicine, the human body shop, artificial intelligence, the future of computers and robots, as well as topics from science fiction.

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