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Caltech is a small, collaborative community, where faculty, postdoctoral scholars, students, and staff from diverse backgrounds, cultures, and experiences live, work, and engage with one another. Together, they remain committed to setting the example of what its intertwined missions of research and education can accomplish.

Caltech is an integral part of Pasadena. Together with JPL, we are the city's largest employer and a source of programs that benefit our neighbors: teachers, businesses, families, cultural centers, and government.

To stay up-to-date on upcoming events and the latest community news, visit Ion Caltech Today or subscribe to The Caltech Weekly.

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Public Events Series
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Events

All Events
October 5, 2026 12:11 pm

CMS-EE Partners Tech Talk with Xtelligent

Annenberg 105
October 5, 2026 1:30 pm

High Energy Theory Seminar

Online and In-Person Event
October 5, 2026 4:00 pm

Cancelled: Dr. Marshall Brennan, "Device" journal

October 5, 2026 4:00 pm

Geological and Planetary Sciences Seminar

Arms 155 (Robert P. Sharp Lecture Hall)
October 5, 2026 4:00 pm

H.B. Keller Colloquium

Annenberg 105
October 5, 2026 8:00 pm

Problem Set Workshop - Ph 1a

124

acres comprise Caltech's campus

>150

student clubs and sports organizations

16

Division III varsity teams

77°

average high temperature

First week down, many to go. Even Berni came out to play! How was your first week? Let us know below! We want to hear all about it!
This morning, NASA’s SpaceX Crew-13 mission successfully launched to the International Space Station, commanded by NASA astronaut and former Caltech postdoc Jessica Watkins. The crew of four astronauts will perform research, technology demonstrations, and maintenance. Watkins first launched to the space station aboard NASA’s SpaceX Crew-4 mission in 2022, spending a total of 170 days in orbit across Expeditions 67 and 68. She will be the first NASA astronaut to launch twice aboard a SpaceX Dragon spacecraft. Read more through the link in our bio. #Caltech #SpaceX #NASA #SpaceExploration #PlanetaryScience Photo: NASA/Robert Markowitz
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Nature may be the world’s greatest chemist, and scientists have only begun to read its library. Caltech chemist Hosea Nelson’s research aims to catalog the chemicals produced across nature, to understand what each one does, and to discover molecules with potential therapeutic applications. Nelson also leads a project recently selected by the National Science Foundation to receive $17 million to build a “programmable cloud laboratory,” a key NSF contribution to the broader Genesis Mission.
Welcome back, Beavers! Let’s make this year a great one. What should you expect this school year? Here’s a message from President Ray Jayawardhana: At Caltech, it’s the unknown that energizes us. Our ambition finds expression through the search for new insights and deeper understanding at every scale: from revealing long-predicted patterns in quantum matter and finding clues to cancer in jellyfish cells, to harnessing AI to protect voters from misinformation and - through the recently announced PRIMA mission - opening a transformative far-infrared window to the cosmos. What unites our community’s disparate pursuits is the restless pull toward the knowledge just out of reach and the unshakeable conviction that no question is too daunting for curiosity to tackle. Welcome to the new academic year! #Caltech #FirstDayOfClasses #Fall2026 #FutureOfSTEM
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