>Crucial to their plans was making cheap, tabletop γ-ray detectors that they could install in dozens of sites. On a related note: there's a citizen science exp

>Crucial to their plans was making cheap, tabletop γ-ray detectors that they could install in dozens of sites. On a related note: there's a citizen science experiment that uses a volunteer-run array of old smartphones with taped over cameras to detect particle showers caused by ultra-high energy cosmic rays. https://en.wikipedia.org/wiki/Cosmic-Ray_Extremely_Distributed_Observatory https://en.wikipedia.org/wiki/Cosmic-Ray_Extremely_Distribut... https://arxiv.org/abs/2010.08351 https://arxiv.org/abs/2010.08351 https://arxiv.org/abs/1410.2895 https://arxiv.org/abs/1410.2895