With a rare total solar eclipse slated to hit parts of the United States next week, we’re taking the opportunity to talk to science journalist David Baron. In his new book, he tells the story of the 1878 eclipse which had throngs of American scientists racing West to witness and study the celestial phenomenon. Baron is obsessed with eclipses himself, and he joins Doug to talk about how mind-blowing a total solar eclipse can be to both 19th and 21st-century observers.