The dates for the 2023 CASSI program will be:
June 19 - August 25, 2023

Paid internship opportunity

2023 CASSI interns will receive $7,000 for their 10-week internship and be provided housing.

World-class research

Students will work with senior researchers on topics such as the first galaxies in the universe, accreting black holes, dark matter, exoplanets, and the life and death of stars.

Professional development

CASSI Interns will participate in a coding boot camp during the first week of the program as well as an educational program designed to teach crucial scientific communication skills.

Apply to CASSI 2023

Carnegie is seeking undergraduate students interested in paid scientific research internships during the 2023 summer. We invite applications from all students in Southern California. One of the goals of the summer program at Carnegie is to increase participation and retention of under-represented groups in astronomy. We encourage Black, Hispanic, and Indigenous scholars, first-generation college students, and women to apply. Applications are due January 31, 2023.

Program Overview

The Carnegie Astrophysics Summer Student Internship Program (CASSI) is a 10 week, paid internship and educational program based at Carnegie Observatories in Pasadena. We welcome a diverse cohort of 10-15 undergraduates from colleges and universities in Southern California to join Carnegie astronomers in collaborative original research projects.

CASSI interns also participate in an educational program that includes over 60 activities designed to improve students' fluency and ease with scientific communication and scientific computing. At the end of the summer, nine out of 10 CASSI interns feel more comfortable presenting their research than they did at the start of the program and 10 out of 10 feel more prepared for future work in astronomy.

The program immerses interns in the campus life at the Carnegie Observatories. From scientific talks by Observatories scientists to CASSI group meetings focused on developing an array of skills and discussing a variety of topics related to the professional astronomy community, each week of the program is designed to provide interns with the tools that will set them up for for success in the program and beyond.

CASSI features structured mentoring by Carnegie Observatories faculty and postdoctoral fellows, as well as other forms of professional development workshops that are intended to fully support the students throughout the the program and in their future careers.
Magellan Baade telescope at Mount Wilson Observatory


Using data from Carnegie's telescopes, students will have the chance to work on topics such as exoplanets, early galaxies, black holes, and dark matter. 

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Summer student doing engineering work with a Carnegie postdoc.


CASSI interns are paired with broader mentoring teams to help support their development during their time at Carnegie and beyond. 

Our Faculty & Postdocs arrow_forward
CASSI Logo with Text


CASSI students in the Carnegie Observatories library

Diversity, Equity & Inclusion

One of the goals of CASSI is to increase participation and retention of under-represented groups in astronomy. We encourage Black, Hispanic, and Indigenous scholars, first-generation college students, and women to apply. CASSI interns participate in programming highlighting the importance of diversity, equity, and inclusion in Astronomy, as well as STEM more generally. The students also organize an annual outreach program for Upward Bound high school students where they share their expertise on college with potential first-generation college students.


Summer student presents his work at the AAS meeting.

Science Communication

CASSI interns participate in a wide range of programs during the summer aimed at improving their scientific communication. These range from writing and poster workshops to short weekly oral presentations of their work. The program culminates in a symposium where all students present the results of their research program to the Observatories community. Upon successful completion of the program, all students will also be given the opportunity to attend the American Astronomical Society meeting the following January to present their research.

NSF Graduate Fellows

2 Fellows and 3 Honorable Mentions


AAS Recognitions

3 Chambliss Astronomy Achievement Awards and 3 Honorable Mentions

Program Alumni

48 percent of alumni who have completed their undergraduate programs have gone on to graduate or professional schools in astronomy or other fields. But we also have alums who have amazing careers in tech, engineering, science writing and beyond.

Contact the CASSI Director

CASSI News Highlights

Information for 2022 CASSI Participants