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Frontpage slideshow

Two of the biggest puzzles in this realm are the nature of the dark matter and dark energy.
We use the cosmos as a laboratory to investigate the fundamental laws of physics.
Astrophysics and Cosmology
We search for answers to fundamental questions about the building blocks of matter and the nature of space and time.
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Our Research Projects

Computational Astrophysics
Cosmic Microwave Background (CMB)
Cosmic Microwave Background
Cryogenic Dark Matter Search (CDMS)
Cryogenic Dark Matter Search
Dark Energy Survey (DES)
Fermi Gamma-ray Space Telescope (FGST)
Rubin Observatory’s Legacy Survey of Space and Time (LSST)
LSST
LUX-ZEPLIN (LZ)
LUX-ZEPLIN

About Us

Scientists in the Particle Astrophysics and Cosmology (PAC) Division at SLAC National Accelerator Laboratory search for answers to fundamental questions about the building blocks of matter and the nature of space and time.

We are part of KIPAC, and are funded by Stanford University and the United States Department of Energy (DOE).

More About PAC »

PAC News

Yi Cui, Risa Wechsler named AAAS fellows
Gravitational lenses could hold the key to better estimates of the expansion of the universe
A powerful new tool to study the cosmos
Q&A: How machine learning helps scientists hunt for particles, wrangle floppy proteins and speed discovery
Sensors of world’s largest digital camera snap first 3,200-megapixel images at SLAC
Auralee Edelen and Wai Ling Wu receive 2020 Panofsky Fellowships at SLAC

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PAC | Particle Astrophysics and Cosmology
  • Computational Astrophysics
  • CDMS
  • CMB
  • DES
  • FGST
  • LSST
  • LUX-ZEPLIN
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Slac National Accelerator Laboratory

2575 Sand Hill Road, Menlo Park, CA 94025

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