Michael E. Brown (born June 5, 1965) has been a professor of planetary astronomy at the California Institute of Technology (Caltech) since 2003. He was previously an associate professor at Caltech from 2002 2003 and an assistant professor at Caltech from 1997 2002. Brown is a Huntsville, Alabama native and graduated from Virgil I. Grissom High School in 1983. Brown earned his A.B. in physics from Princeton University in 1987, where he was a member of the Princeton Tower Club. He did his graduate studies at the University of California, Berkeley where he earned an M.Sc. in astronomy in 1990 and a Ph.D. in astronomy in 1994. Brown is well-known in the scientific community for his surveys for distant objects orbiting the Sun. His team has discovered many trans-Neptunian objects (TNOs). Particularly notable are Eris, the only TNO discovered that is larger than Pluto, and is one of a number of dwarf planets in the Solar System; 90377 Sedna, a planetoid thought to be the first observedbody belonging to the inner Öpik-Oort cloud; and 90482 Orcus.