Caltech Welcomes Astrophysicist Ray Jayawardhana as New President
Ray Jayawardhana, an astrophysicist and exoplanet hunter, begins his tenure as Caltech’s 10th president. He outlines priorities in climate, space exploration, and diversity.
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Bullet Cluster: Proof of Dark Matter’s Existence After 20 Years
The 2006 Bullet Cluster study revealed dark matter by showing gravitational mass separated from ordinary gas with 8 sigma certainty. Here’s why it still matters.
JWST Weighs ‘Sleeping Giant’ Black Hole 6 Billion Times Sun
The James Webb Space Telescope has weighed a dormant supermassive black hole from 10 billion light-years away, revealing it to be 6 billion times the mass of our Sun.