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![Alex Filippenko](https://news.berkeley.edu/wp-content/uploads/2018/10/filippenko.jpg)
Professor of astronomy
Areas of expertise: Astronomy, Astronomy/Chemistry/Physics
![Saul Perlmutter](https://news.berkeley.edu/wp-content/uploads/2018/10/perlmutter.jpg)
Professor of physics
Areas of expertise: Astronomy, Astronomy/Chemistry/Physics, Cosmology
![](https://news.berkeley.edu/wp-content/uploads/2018/02/muller.gif)
Professor emeritus of physics
Areas of expertise: Astronomy, Astronomy/Chemistry/Physics, Climate change, Cosmology, Nuclear