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Astronomy
Oct 22, 2012 — Novelist Jodi Picoult explores life and death, while oncologist David Agus models new health practices, virologist Nathan Wolfe tracks emerging diseases, Dava Sobel reflects on Copernicus, and Charles Shields looks at novelist Kurt Vonnegut.
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Jun 3, 2012 — The rare daytime astronomical event, in which Venus can be seen as a tiny black dot crossing the sun, won't happen again until 2117. Andrea Wulf, author of Chasing Venus, explains how 18th-century astronomers used the event to calculate the distance between the Earth and the sun.
Nov 8, 2011 — In 1543, when Nicolaus Copernicus made the astounding claim that Earth revolves around the sun, not the other way around, his ideas were met with scorn. "It went against everything that your senses tell you. It went against common sense," says author Dava Sobel, who wrote a new book about the astronomer.
Jul 10, 2005 — George Johnson talks about his new book, Miss Leavitt's Stars: The Untold Story of the Woman Who Discovered How to Measure the Universe. Henrietta Leavitt, while working at Harvard College's observatory in the early 20th century, discovered a way to measure distances between stars, which led astronomers to calculate the size of the universe.


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