While the upcoming total solar eclipse on April 8 may be one of the most watched in history (with up to 43.8 million people living in the Path of Totality - plus many more making a trip to view it) if you're less fortunate, or busy, you can catch a free livestream of the event. (The next total solar eclipse visible from the contiguous United States won't be until August 23, 2044 - more than 20 years away.) Shop Now at Exploratorium