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Astronomy professor breaks down how eclipses work: "We get the best eclipses in the solar system"
Janna Levin, professor of physics and astronomy at Barnard College, joins CBS News to discuss Wednesday's total solar eclipse. CBS News 24/7 is the premier anchored streaming news service from CBS News and Stations that is available free to everyone with access to the internet and is the destination for breaking news, live events, original ...
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