Sarafina El-Badry Nance is an Egyptian-American[2] astrophysicist[3][4][5] and science communicator in the Department of Astronomy at the University of California, Berkeley.

[12] In 2016, Nance received a dual Bachelor of Science (BS) degree in physics and astronomy from the University of Texas at Austin in 2016.

[14][15][12] While an undergraduate student at Austin, Nance was named a Dean's Honour scholarship and took part in a National Science Foundation (NSF) summer program at Harvard University.

[16] She works with the Lawrence Berkeley National Laboratory Centre for Computational Cosmology to use supercomputers to build models of the explosions of supernovae in their final stages.

[16] One of her viral tweets on Twitter, which highlighted how important failure was in science, was picked up by Sundar Pichai.

[21] Nance used a crowdfunding campaign to raise money to cover the cost of a double mastectomy, and her social media platform to advocate for early and frequent testing as well as preventive medicine.