[1][2] She has made several significant contributions to the fields of hadron and dark matter phenomenology, helping to develop the working "Standard Cosmological Model".

Farrar obtained a bachelor's degree at UC Berkeley in 1968, being one of the first undergraduate students to enroll in graduate courses in the physics department.

During her time at Caltech, Farrar improved the current understanding of the Pion form-factor,[11] and proposed a new model for elastic nucleon scattering.

[12] She accepted a faculty position at Rutgers University in 1979, where her work continued to probe Standard Model interactions and contemporary developments in Supersymmetric string theory.

In 2012, Ronnie Jansson (then a graduate student) and Farrar, published an article presenting a new model of the galactic magnetic field.