Welcome to the Fundamental Physics Directorate website.
The Fundamental Physics Directorate brings together scientists and technologies that support national priorities in particle physics, astrophysics and cosmology to explore the basic particles and forces that knit the cosmos together.
This computer simulation visualizes the filaments of dark matter thought to underpin the Universe's structure of galaxies and galaxy clusters.
Visualization by Ralf Kaehler, Oliver Hahn and Tom Abel (KIPAC).