UCSC is one of the world's leading centers for both observational and theoretical research in astronomy and astrophysics. The department was recently ranked first in the country in research impact, based on citation studies. Faculty and students in the department and our affiliated research centers are building and using first-rank telescopes and instrumentation—on Earth and in space—extending humanity’s vision to planets orbiting nearby stars and the first stirrings of the Universe.

The department includes 24 faculty members, whose research interests range from our solar system and the Milky Way to the most distant galaxies in the Universe and the most fundamental questions of cosmology.

UCSC is a leader in astrophysics education, and we attract some the best graduate students in the country, enrolling approximately 40 students working towards the Ph.D. degree.

UCSC Department of Astronomy and Astrophysics

Seeing and Site Testing: Records of Astronomical Site Testing and Seeing