Chasing Venus Lecture Series: The American Expeditions of 1874 and 1882

"The American Expeditions of 1874 and 1882", a lecture from Steven J. Dick, NASA Chief Historian, National Aeronautics and Space Administration, Washington, DC given on May 6, 2004 in conjunction with the exhibition "Chasing Venus" and the 2004 transit.

Chapter 1 - Introduction, Ron Brashear, Chasing Venus Curator 0:01
Chapter 2 - Transit of Venus Visibility 2004 05:06
Chapter 3 - The Importance of Transit of Venus 09:01
Chapter 4 - Why Does the Transit Occur? 11:08
Chapter 5 - Historic Events of the Transit 15:26 
Chapter 6 - American Expeditions 17:45
Chapter 7 - Technologies Used to Observe the Transit 21:40 
Chapter 8 - American Transit of Venus Parties,1874 29:48
Chapter 9 - Methods used in Measuring the Transit 31:20
Chapter 10 - Question & Answer 43:40