(1951–2012) Physicist and astronaut
Sally Ride earned her PhD in physics with her thesis on X-rays in astrophysics. She was the third woman in space and the first American woman in space. As of 2016, she remains the youngest American astronaut to complete a mission to space. She is also the first known member of the LGBTQ community to travel into space.
Number 146 in an ongoing series celebrating remarkable women in science, technology, engineering, and mathematics.