A photo stack of 411 photos merged into one image showing the paths of stars and airplanes over a field in Violet, Ontario. The big dipper is the brighter star trails just above the barn, and the north star is in the center of all the arcs.
A tiny drop could have big implications for our understanding of particle collisions.
Over the past few months, the Large Hadron Collider has been ramming protons and lead ions together in the Compact Muon Solenoid (CMS), one of its particle detectors. After each collision, some of the newly produced particles zoom away together like a school of fish, in a scientific puzzle called the “ridge effect,” rather than bouncing off in all directions.