Dr. Sian Proctor is a geoscientist and astronaut. Since 1999, she has been a full-time professor teaching geology, sustainability, and planetary science at South Mountain Community College (SMCC) in Phoenix, Arizona. She has served as the Faculty Developer at SMCC and the Open Educations Resource Coordinator for the Maricopa Community Colleges.

Proctor paved the way for women and the African-American community in 2021 as part of Inspiration4, the world's first all-civilian mission to orbit in space. At 51, Proctor also made history becoming the first Black commercial astronaut and first Black woman to pilot a spacecraft.

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