Lunar Eclipse - April 15, 2014

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  • Опубліковано 8 кві 2014
  • Dr. Mary Urquhart, a planetary scientist and head of the Department of Science and Mathematics Education at The University of Texas at Dallas, answers questions about the April 15, 2014, lunar eclipse, the first of four consecutive total lunar eclipses, known as a "tetrad of lunar eclipses," that will be visible from North America.

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