Video: Transit of Venus used as astronomical yardstick

Monday, June 4, 2012 - 19:30 in Paleontology & Archaeology

In the 18th century, astronomers believed that they could use the transit of Venus to answer one of the most pressing questions of the age: What is the size of the solar system? Elaine Quijano reports on the perilous quest hundreds of scientists took across the globe to record this rare occurrence.

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