The speed, direction and arrival time of that light can help identify where the original cosmic ray came from. (sciencenews.org)
Those particles trigger the detectors in the array, enabling researchers to deduce the direction and energy of the original cosmic ray. (sciencemag.org)
Some of these secondary particles reach detectors on the ground, providing information scientists can use to infer the properties of the original cosmic ray. (sciencedaily.com)