Sandra Moore Faber (born December 28, 1944) is an American astrophysicist known for her research on the evolution of galaxies.

She then earned her PhD in 1972 from Harvard University, specializing in Optical Observational Astronomy under the direction of I. John Danziger.

[3] In 1972, Faber joined the faculty of the Lick Observatory at University of California, Santa Cruz, becoming the first woman on staff.

[4][5] Around 1984, Faber collaborated with Joel Primack, George Blumenthal, and Martin Rees to elucidate their theory of how dark matter was part of galaxy formation and evolution.

While some details have been proven wrong, the paper still stands as the current working paradigm for structure information in the universe.

[7] During the later 1980s, Faber got involved in an eight-year project called the "Seven Samurai" collaboration, which attempted to catalogue the size and orbital speeds of 400 galaxies.

[1] Faber was also the principal investigator of the Nuker Team, which used the Hubble Space Telescope to search for supermassive black holes at the centers of galaxies.

In addition to this, she led the development of the DEIMOS instrument on the Keck telescopes to obtain spectra of cosmologically distant galaxies.