What is the universe made of? SLAC experts weigh in on the mysterious force that shapes our cosmic history

Menlo Park CA (SPX) Jan 23, 2026
Cosmologists Josh Frieman and Risa Wechsler look back on the Dark Energy Survey, sharing how it is paving the way for the NSF-DOE Vera C. Rubin Observatory to dig deeper into some of the universe's darkest mysteries. As the Dark Energy Survey (DES) releases its final results, we caught up with two physicists who have been involved in the project from its early days. In this Q&A, Josh Friem