Maria Mitchell (1818–1889) was the first American scientist to discover a comet. Born on Massachusetts’ Nantucket Island to a library worker mother and an amateur astronomer father, she adopted both pursuits in her own life. Her parents ensured that she got a good education, which was not always a guarantee for girls at the time. Her father personally undertook her instruction in astronomy, mathematics, surveying, and navigation. At the age of 16, Maria opened a math and science school for girls. In 1836 Mitchell became the first librarian of the Nantucket Atheneum, the island’s members-only library. The Atheneum became a public library in 1900 and is still the primary library on Nantucket to this day.
In August 1841, during her tenure as librarian, the Atheneum hosted Nantucket’s first antislavery convention, a three-day event that featured Frederick Douglass and William Lloyd Garrison as speakers.
Similarly to Marie Curie and Albert Einstein, Mitchell’s job as a librarian afforded her the opportunity to think about science and much more. During her 20 years as a librarian, she spent many hours each day reading, with nights reserved for time at the nearby observatory that her father built. Though she became famous for her comet discovery, Mitchell was trailblazing in many other ways. She was likely one of the first professional women to be employed by the US government due to her work on the US Coastal Survey; she was a founder of the American Association for the Advancement of Women; she was involved with antislavery and suffrage movements; and she frequently published her scientific work in journals that usually published only men’s research. Mitchell became the first female professor of astronomy at Vassar College in 1865, specializing in the surfaces of Jupiter and Saturn. Standing against social norms, she made sure her female students came out at night to use the telescopes, and many of these students were also later published in scientific journals.