Shows > Venus Transit 2012 - Last Time In Your Lifetime

Past Venus Transits Revealed Solar System’s Size | Video Part 2

Offering un-obstructed views of the Sun from horizon to horizon and superb weather, Hawaii was perfect for astronomers to view Venus Transits in 1874 and 1882. Such observations accurately determined the scale of the Solar System for the first time.
credit : NASA/GSFC/Sun-Earth Day