![An image of John Mather](https://science.nasa.gov/wp-content/uploads/2023/07/johnmatherjweb.jpg?w=4096&format=jpeg)
John Mather – Senior Project Scientist Emeritus, NASA
Senior Project Scientist Emeritus, NASA
Dr. John C. Mather is a Senior Astrophysicist in the Observational Cosmology Laboratory located at NASA's Goddard Space Flight Center, Greenbelt, Md. He is also the Senior Project Scientist on the James Webb Space Telescope.
![An image of John Mather](https://science.nasa.gov/wp-content/uploads/2023/07/johnmatherjweb.jpg?w=4096&format=jpeg)
He received a bachelor's degree in physics from Swarthmore College in Pennsylvania as well as a doctorate in physics from the University of California, Berkeley. Mather's research centers on infrared astronomy and cosmology.
![Dr. John C. Mather, James Webb Space Telescope Senior Astrophysicist in the Observational Cosmology Laboratory He is also the Senior Project Scientist.](https://science.nasa.gov/wp-content/uploads/2023/07/webb-peoolematherjohnadditional1.jpg?w=4096&format=jpeg)
As a National Research Council postdoctoral fellow at the Goddard Institute for Space Studies, New York City, he led the proposal efforts for the Cosmic Background Explorer mission (1974-76), and came to Goddard Space Flight Center to become the Study Scientist (1976-88), Project Scientist (1988-98), and also the Principal Investigator for the Far Infrared Absolute Spectrophotometer (FIRAS) on the Cosmic Background Explorer (COBE).
Mather and the COBE team showed that the cosmic microwave background radiation has a blackbody spectrum within 50 parts per million (ppm), confirming the Big Bang theory to extraordinary accuracy.
Mather has served on advisory and working groups for the National Academy of Sciences, NASA, and the National Science Foundation for the Atacama Large Millimeter Array (ALMA), and the Center for Astrophysical Research in the Antarctic (CAMA).
![Dr. John C. Mather, Senior Astrophysicist in the Observational Cosmology Laboratory He is also the Senior Project Scientist on the James Webb Space Telescope.](https://science.nasa.gov/wp-content/uploads/2023/07/webb-peoolematherjohnadditional2-e1692807774908.jpg?w=4096&format=jpeg)
As Senior Project Scientist (1995-present) for the Webb telescope, Mather leads the science team, and represents scientific interests within the project management.
As winner of the 2006 Nobel Prize for Physics, chosen by the Royal Swedish Academy of Sciences, Mather shares the prize with George F. Smoot of the University of California for their work using the COBE satellite to measure the heat radiation from the Big Bang.
See Also:
![Dr. John C. Mather, James Webb Space Telescope Senior Astrophysicist in the Observational Cosmology Laboratory He is also the Senior Project Scientist.](https://science.nasa.gov/wp-content/uploads/2023/07/webb-peoolematherjohnadditional3.jpg?w=4096&format=jpeg)