I learned something today...
The University of Notre Dame has 64 "detectors" in a field the size of two football fields on the north end of campus -- to track the effects from the sun (Cosmic Ray Astrophysics). It's called Project GRAND -- Gamma Ray Astrophysics at Notre Dame. (photo above)
If you'd like to learn more -- here's a story from the South Bend Tribune -- and a link to the Project GRAND site...
LINK: TRACKING THE SOLAR SPACE
LINK: ND'S PROJECT GRAND