It's called Ring of Truth. There's also a hardcover book with
essentially the same content. Unfortunately it's out of print,
but I managed to find a used copy. You can also order the videos
(not cheap) from PBS. Sorry I don't have the phone number handy.
I always show the 6th video in my astronomy classes. It covers
Cecilia Payne's discovery of the recipe of the stars, and Vera
Rubin's work on dark matter. Very nicely done.