Brenna Lynn Flaugher is an experimental cosmologist who works as a distinguished scientist at Fermilab, where she heads the Astrophysics Department. Flaugher led the development of the Dark Energy Camera at the Víctor M. Blanco Telescope in Chile, part of the Dark Energy Survey; she has also been involved in the development of the Dark Energy Spectroscopic Instrument at the Kitt Peak National Observatory in Arizona. By seeking a greater understanding of dark matter, she aims to explain the observed accelerating expansion of the universe.