“In 1901, Harvard was a man’s world. But an astronomer named Edward Charles Pickering broke that rule. He assembled a team of women to map and classify the types of stars. One of them provided the key to our understanding of the substance of the stars. And another devised a way for us to calculate the size of the universe.”

COSMOS: A Spacetime Odyssey (2014) written by Ann Druyan and Steven Soter