Today, millions of Americans will have the opportunity to see a rare total solar eclipse. Fred Espenak, a retired astrophysicist known as Mr. Eclipse, was so blown away by an eclipse he saw as a teenager that he dedicated his life to traveling the world and seeing as many as he could. Mr. Espenak discusses the eclipses that have punctuated and defined the most important moments in his life, and explains why these celestial phenomena are such a wonder to experience. Guest: Fred Espenak, a.k.a. “Mr. Eclipse,” a former NASA astrophysicist and lifelong eclipse chaser.