It's been referred to as "the Super Bowl of the sky" - the total solar eclipse on August 21 that will allow people across the continental United States to witness a rare and spectacular celestial event. Martha Teichner meets with retired NASA astrophysicist Fred Espenak (known as "Mr. Eclipse") and with other "umbraphiles" whose love of eclipses outshines all else.
Air Date: Aug 13, 2017
