Vera Rubin (1928-2016) was an American astronomer whose groundbreaking findings provided evidence for the existence of dark matter. Though her findings were groundbreaking, she was never awarded as such. As a woman astronomer, Vera was an early pioneer, and worked to make the field more accessible to women after her.
For Further Reading:

How Vera Rubin Confirmed Dark Matter
Overlooked No More: Vera Rubin
Vera Rubin: A Life
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