Students sitting upon the "Squiggle" statue on the UCSC campus, looking up at the stars.

About

About the Department

UC Santa Cruz is a world-renowned leader in the fields of astronomy and astrophysics. Our scientists have the Fermi Gamma-ray Space Telescope, the Keck Telescopes on Mauna Kea, and the Automated Planet Finder at Lick Observatory—and figured out how to fix the flawed optics on the Hubble Space Telescope. They partner in NASA exploration, including the Kepler planet-finding telescope and Cassini mission to Saturn.

Inside Keck Observatory during a starry night

Constraints on the size of telescopes were shattered with our invention of segmented mirror technology as an alternative to a single slab of glass. Our scientists conceptualized the role of dark matter in shaping the structure of the universe. Our pioneering work with the world’s fastest computers is unveiling the secrets of the universe through computational analysis and visualization of mind-boggling phenomena: merging black holes, exploding stars, and the formation and evolution of galaxies. We launched and lead the field of adaptive optics, critical in allowing astronomers to correct the blurring effect of turbulence in the Earth’s atmosphere.

UC Santa Cruz manages the UC Observatories, which operates the Lick Observatory on Mt.  Hamilton, oversees UC’s partnership in the W.M. Keck Observatory in Hawaii, and is the central coordinator for UC’s participation in the international Thirty Meter Telescope project.

Our faculty and alumni have received highest honors—from international research prizes and elections to the National Academy of Science, to a Niels Bohr professorship for Enrico Ramirez-Ruiz, to the Kavli Prize awarded to emeriti professor Jerry Nelson and the National Medal of Science awarded to emeriti professor Sandra Faber.

We are focused in three centers of discovery:

  • Theoretical Astrophysics Santa Cruz (TASC). A true interdisciplinary approach to scientific computation and the visualization of the universe. With the use of supercomputers we test complex theories of our dynamic universe. Our partners include the UC Santa Cruz Digital Arts and New Media Center.
  • Other Worlds Laboratory (OWL). A comprehensive research effort to find and understand planets around other stars and explore the diversity of our own solar system.  Through new observations and sophisticated computer modeling we strive to understand how planets form and evolve over time and whether life exists on worlds beyond the Earth.
  • Institute for Astronomical Instrumentation Research. Harnessing our expertise in developing the new technologies that will form the foundation for the world’s largest telescopes and other instruments.

Academics

The department offers both undergraduate and graduate degrees. Ph.D. graduates often obtain postdoctoral positions at research institutions and continue on in academia. Undergraduate majors often enter the K-12 teaching workforce as well as begin graduate studies at top Ph.D. programs in the U.S. Explore our undergraduate and graduate program options.


Students sitting at a table on their laptops smiling and talking.

Diversity, Equity, & Inclusion

June 24, 2020

BLACK LIVES MATTER 

We, the faculty, students, and staff of the UCSC Department of Astronomy & Astrophysics condemn racism, injustice, and hate. The unconscionable murders of Geoge Floyd, Breonna Taylor, Tony McDade, Ahmaud Arbery and countless other innocent Black lives at the hands of police is evidence of systemic racism and deeply-rooted social injustice that must be addressed. We mourn with our Black colleagues and students who are reminded of the marginalization and oppression that is still, today, a part of their experience. We acknowledge and deeply lament the undue burden and collective trauma that they carry. 

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We call for policy changes at all levels of policing that can immediately be implemented to reduce harm caused by police.  We also support transformative change that moves beyond policing toward comprehensive structures for community safety.  We urge campus administrators to audit campus police funding and resource allocations with such changes in mind. We condemn the unnecessary use of police force as was seen in the February 2020 graduate student strikes and hold these events as additional evidence that change is required.  

We recognize that systemic racism is endemic to academia.  This is evidenced in the under-representation of BIPOC (Black, Indigenous, and Persons of Color) faculty, especially in STEM fields. This is evidenced in the absence of Black faculty in our own department. We hear the voices of Black colleagues and students across the nation and at home describing their experiences of persistent microaggressions, macroaggressions, and structural biases that perpetuate and institutionalize exclusion. 

We affirm a commitment to anti-racist practices that ensure every present and future member of our community feels valued and knows they belong. We pledge to take a critical look at hiring and graduate student admissions processes. We pledge to educate ourselves with regards to racism and to learn how to be active allies. We will critically examine the metrics we use to measure academic and professional success and better understand how they racially discriminate.  We will identify the ways that important contributions to our science by persons of color have gone unnoticed. We pledge to update the department website by October 1, 2020 to report back on these activities. 

This list is by no means exhaustive, nor is it sufficient. Rather, it represents a work in progress and our continuing pledge to do better.  

Signed, 

Faculty:

Natalie M. BatalhaRebecca Jensen-ClemEnrico Ramirez-Ruiz
Kevin BundyAlex LeauthaudBrant Robertson
Ryan FoleyPiero MadauConnie Rockosi
Jonathan FortneyClaire MaxAndy Skemer
Raja GuhaThakurtaRuth Murray-ClayGraeme Smith
Phil HinzXavier Prochaska
Emeriti:Staff:
Bruce MargonLindsay Lauver
Patti Schell


Postdoctoral Researchers/Research Scientists:
  

Joe BurchettJosiah Schwab
Martin Gaskell
David Jones
Joshua Krissansen-Totton
Johannes Ulf Lange
Emily Martin

 Graduate Students: 

Sierra ClarkJamie Law-SmithAmanda Quirk
Anne DattiloKevin McKinnonNicholas Scarsdale
Rosa Wallace Everson Joseph M Akana MurphyTyler Takaro
Erica J. GonzalesGrecco OyarzunMaggie Thompson
Callie HoodViraj Pandya
Molly KosiarekDiana Powell

Undergraduate Students:

Cameron Clark

John Lopez

Astrobiology Initiative:

David Deamer

Chad Saltikov

Deana Tanguay

Zac Zimmer

UCO Lick Staff:

Elinor Gates

Bradford Holden

Natasha Pedroza

Andrew Phillips

Matthew Shetrone

Kyle Westfall

If you would like to add your signature, please click here.


Contact & Visitor Information

Contact

Department Office
Room 271 of the Interdisciplinary Sciences Building (ISB) on Science Hill

Office Hours
M-F, from 9:00 a.m. to 4:00 p.m, and closed 12:00 – 1:00 PM for lunch.

Telephone: (831) 459-1311
Fax: (831) 426-3115

Parking
Find a parking map here.

Address

USPS Mailing Address:

UC Santa Cruz
Department of Astronomy & Astrophysics
1156 High Street
MS: UCO / LICK
Santa Cruz, CA 95064

FedEx Delivery Address:

UC Santa Cruz
Department of Astronomy & Astrophysics
1156 High Street
ISB Bldg Room 260
Santa Cruz, CA 95064

Last modified: Aug 13, 2025