Astrophysicist and author Ray Jayawardhana became Caltech’s tenth president on July 1. He previously served as provost at Johns Hopkins University and dean of Cornell University’s College of Arts and Sciences, and earlier spent a decade at the University of Toronto. Alongside his academic leadership, he studies the origins and evolution of planetary systems and writes about science for the public. On October 5, Jayawardhana spoke with the Tech about settling into the role and his emerging priorities for research, student life, and Caltech’s impact beyond campus.

Mark Wise died on July 10, 2026. He was a member of the Division of Physics, Mathematics and Astronomy at Caltech for forty-three years. The obituaries will say, correctly, that he was one of the great theoretical physicists of his generation: an architect of heavy-quark effective theory, a student of Fred Gilman at Stanford, recruited to Pasadena by Murray Gell-Mann, a member of the P5 panel that set the national course for particle physics, and for sixteen years the principal investigator of Caltech’s high energy physics program. All of that is true, and none of it is the reason the people who worked beside him are bereft.

On October 9, 2023, Mark came to Dabney dinner to present a challenge to Dabney House. He explained that on a recent visit to a colleague, he noticed a LEGO minifigure of the colleague standing on the desk. He thought this was extremely powerful, so he challenged Dabney to make a LEGO minifigure of himself, with a reward of $1000 donated to the house if they could pull it off.

Like many Caltech physics students of my generation (2016-2020), I met Mark during Ph125A. I was the kind of student to sit in the front row and ask questions, so I’d say I got to know him pretty well in class.

I met Mark Wise in 2022, during my freshman year at Caltech. My first-year SURF mentor connected us because of my interests in theoretical particle physics, and his work at the time was directly aligned with our project.

PALAISEAU, France — Rafael Crespo (BS ’26) traded the familiar backdrop of California’s San Gabriel Valley for the suburban outskirts of Paris for a term. As an exchange student at École Polytechnique, known on campus as “L’X,” Crespo found an environment that challenged his Caltech routine in many ways. The sprawling campus sits on a plateau near Palaiseau, a 40-minute train ride outside Paris. The institution traces its roots back to 1794 during the French Revolution, and is one of the wo

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Pizza at 4,630 meters, the Kissing Wall, and one very long summit night. Previously: a lost bag, four rowdy lads from Leeds, and two cold nights on the Machame Route. Now the mountain gets serious. Day 3 The Mountain, a Naughty Babe Altitude gain: 120m A thing about living in Southern California is the sheer amount of Spanish you absorb. Before Caltech, my Spanish was confined to movie references. Those references might raise eyebrows over stereotypes, but for a kid in Sub-Saharan

I was not expecting much from Scandinavia. To be honest, I was a little afraid of whether the locals would be kind to foreigners, bringing back flashbacks of communication difficulties during my time in Japan. I also wondered if the countries, which seemed culturally homogenous, would be welcoming of my family and me, who are fairly Indian — we talk in Tamil and pack our own meals on flights and trains. I was very pleasantly surprised to be proven wrong on all counts. Mostly, I was surprised at

This month, the Jet Propulsion Laboratory (JPL) and Caltech are celebrating 90 years of partnership, having worked together on the world’s most advanced guidance and navigation systems in space. In the bird world, many Caltech birds are also masters of precision flight, known for their signature hunting behavior – flycatching. They launch from a stationary position, track a moving target with pinpoint accuracy, intercept it at the best moment, and return to where they started. This sally-and-ret

TACIT House on 275 S. Hill Avenue, made time-traveling haven. (Image: Kari Coleman) As Caltech’s academic year finished up at the end of May, I received a printed invitation to a “Time Traveler Party." The invitation arrived after I attended. Earlier, I’d been directed to a registration link that explained, “Only two events of this kind have been tried before — a time travelers’ convention at MIT

Mark at the blackboard. (Credit: Clara Murgui) Mark B. Wise, Caltech’s John A. McCone Professor of High Energy Physics and a leading theoretical particle physicist, died July 10 at age 72. Wise spent more than four decades at Caltech, where his work helped shape modern particle physics and where generations of students knew him as an unusually approachable professor with a dry sense of humor. His m

Current Caltech undergraduates are talented, accomplished, and frequently dissatisfied. Many leave Caltech less willing to recommend their student experience to others than their peers at MIT and Ivy League schools. Alumni can attest that similar dissatisfaction with the undergraduate student experience was not present in earlier years. What has been lost? Certainly, the stresses of Caltech have not changed. Each year, Caltech recruits the best of the best in science, admitting them in extremely small entering classes (the Class of 2029 has only 248 enrolled students) under highly selective admission standards (the enrolled students in the Class of 2029 reflect only 2.2 percent of the 11,285 individuals who applied for admission).

California needs more homes than it is building. In 2022, the Statewide Housing Plan from the Department of Housing and Community Development called for 2.5 million homes to be built by 2030 in order to address the housing shortage. For the past three years, an average of 104,085 homes per year were authorized by building permits in the state, one-third of the 312,500 annual pace implied by the target. At Nova Cottage Co. in Pasadena, CEO Caroline

Hello everyone from Housing and Dining Services! As we kick off a brand new academic year, we want to take a moment to welcome you all back to campus. We are incredibly excited to see familiar faces and can’t wait to get to know all the new students joining our community this fall. World Cup Food Fest We hope everyone enjoyed last Friday’s (Oct. 2) Food Fest! It was fantastic seeing the community come together to enjoy our World Cup finalist and champion-themed foods, as well as the speci

Arabella Camunez arrived in Denmark ready for a different style of learning. She also found a welcoming community, an abundance of castles and winter days with only a few hours of daylight. Arabella, a member of Caltech’s Class of 2027 studying chemical engineering, spent fall 2025 at the Technical University of Denmark, known as DTU, through Caltech’s Copenhagen Scholars Program. “I have really enjoyed my time at the Danish Technical University,” Arabella wrote. “Both the international studen

The personal belongings of Caltech professors past, including Richard Feynman, Linus Pauling, and Clair Patterson, went on the auction block, among other scientifically historic items. This summer, as part of its Geek Week, Sotheby’s hosted a History of Science & Technology auction at its New York headquarters on the Upper East Side of Manhattan, which featured several items that were once housed in Pasadena. Lots spanned over two centuries and numerous fields in science and technology. Items p

A SATIRE advice column about alive, ahaha, and everything in between! Brought to you by the one and only California Tech. See below for wisdom (?) from Quails past and scan the QR code to submit your own questions for future issues! How do Question the Quail articles get written? WATER!!! LOTS OF WATER!!! THAT IS THE ONLY WAY TO WRITE QUAIL ARTICLES SINCE IT IS VERY HOT IN PASADENA!!! **Wh

A budget adventurer, four rowdy lads from Leeds, and one relentless case of gas on the Machame Route There is something out there, and something in here. More often than not, I go looking for what’s out there to forget what’s happening in here. Sometimes it’s simpler than that. Just a burning curiosity about what lies beyond in me: the landscapes, the people, the perspectives, the challenges. This summer, I got the chance to visit the Roof of Africa. The trip was mostly born of a need to do

Strictly speaking, predators are animals that eat other animals, so a large proportion of our campus species qualify, including the undergrads ordering beef pho, the squirrels eating baby hummingbirds, and the occasionally cannibalistic turtles. While you are still blinking in disbelief and digesting that info, I am going to limit this column to a few obvious predators: those deemed dangerous by the consensus of two security forces – Caltech Security and the natural security league of American c

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Young Ventures Adds Caltech to Its Scouting Network Editor’s note: Camilla is a co-founder of Young Ventures and serves as its Caltech partner. Young Ventures is a venture capital platform run by students at nine universities. It launched publicly on September 1 with Caltech as one of its partner schools. The others are Stanford, Harvard, NYU, Cambridge, Oxford, LSE, ETH Zurich and Bocconi. Davide Franchini founded the platform, and each campus has one student partner. The idea is to find

After five years of volunteering under different acronyms, I officially became by far the oldest orientation leader in fall 2026. I enjoy the festive (and freebie-loaded) orientation weeks, but more importantly, the bright-eyed and bushy-tailed new students rejuvenate my excitement about a place that feels a bit too familiar. The yearly revitalization of our campus matters for both first-years and old-timers. For new students, it is the season to find their footing by declaring majors or joinin

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With the historic heat wave temporarily subsiding, our Caltech campus settles into a new academic year. As the Tech’s resident wildlife columnist, I’m here to extend a warm welcome to everyone new to Caltech — though after this summer, “warm” may not be the compliment it once was. Like many urban areas around the world, Caltech is an ecosystem where humans and other animals coexist. The campus is small, but a one-hour walk around it can easily turn up thirty wildlife species. In this guide I hi