This August, the U.S. will experience the first total solar eclipse seen from the U.S. coast to coast in nearly a century. Here's how the eclipse works, and why scientists are keeping a close eye on it. Illustration: Heather Seidel/The Wall Street JournalAstronomers say a total eclipse of the sun later this month, the first to be visible across the continental U.S. in almost a century, will be an experiment in solar physics conducted on a national scale, as citizen scientists join researchers in scrutinizing the star that helps make life on earth possible. The total solar eclipse on Aug. 21 will fall across 14 states, each of which will experience more than two minutes of daytime...

Source: Wall Street Journal August 14, 2017 09:22 UTC