On September 22, the Coronagraph Instrument on NASA's Nancy Grace Roman Space Telescope opened its eyes to cosmic light for the first time. The ultimate purpose of the instrument—which is commanded ...

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 ...

Isaac Newton is typically portrayed as a solitary scientist with intense focus who was obsessed with power and deeply egotistical. But a new book by Caltech historians Jed Buchwald and Mordechai ...

Intense, brief flashes of radio light called fast radio bursts (FRBs) travel across billions of light-years to reach Earth, passing through a fog of matter along the way. The bursts' origins are ...

The blood–brain barrier (BBB) is a protective filter that lines the brain's blood vessels and is notoriously hard to penetrate, making the treatment of brain disorders very difficult. Strategies ...

Although increased cell proliferation is a hallmark of cancerous tissues, in some cases, it may actually be protective against tumor growth, according to a new study from Caltech researchers. Using ...

Artificial intelligence is proving to be transformative in its ability to work with language and images. Now, with a growing push to apply AI to scientific discovery, Caltech's Anima Anandkumar says ...

Rudolph A. (Rudy) Marcus, Caltech's John G. Kirkwood and Arthur A. Noyes Professor of Chemistry, passed away on July 16, 2026. The prolific chemist, who approached theory with infinite curiosity and ...

Our cosmos is awash with radio waves, originating from fierce jets blasting out of distant black holes, blinking dead stars closer to home, and many other exotic objects. To observe radio waves—which ...

Quantum computers of the future may be closer to reality thanks to new research from Caltech and Oratomic, a Caltech-linked start-up company. Theorists and experimentalists teamed up to develop a new ...

When the densest objects in the universe collide and merge, the violence sets off gravitational waves that reverberate across space and time over hundreds of millions and even billions of years. By ...

One year after the 2025 Los Angeles fires, Caltech researchers are pressing forward with research projects to provide answers in service of public health and safety. Through investigations that ...