Look for ‘shadow bands’ before and after the total eclipse

A total solar eclipse will be seen across the United States on August 21st, but the entire show won’t be up in the sky. Mysterious shadow bands will streak across the landscape seconds before and after totality. NASA says that scientists don’t fully understand what they are. Shadow bands are described as thin wavy lines that move in parallel over plain-colored surfaces. NASA reports that there have been many attempts to explain the phenomenon over the years: “Because shadow ban