At 12:58 P.M. on March 30, 2010, the rate monitors that track activity inside the CMS detector spiked, revealing the presence of the first proton-proton collisions. Seconds later, researchers saw these first images of proton interactions and the resulting new particles they produced. Bright yellow dots with golden tentacles represent reconstructed charged particles; red and blue rectangles of varying sizes represent energy depositions.

Credit: Courtesy of Markus Klute

Read the full article