Wyoming is scrambling to prepare for the August 21st total solar eclipse which could attract so many people here that it'll double the state's population. But one thing many people may not be prepared for is what to watch for in a total solar eclipse. Wyoming Public Radio's Melodie Edwards sat down with University of Wyoming astronomer Mike Pierce to get some tips. Pierce says this eclipse is known as the Great American solar eclipse because the shadow of it will race at almost 2,000 miles an hour across the entire U.S. from Oregon to South Carolina.