How Cosmic Rays and Balloons Started Particle Physics

Today, cosmic rays are used to understand things like supernovas, but in the early 1900s, they helped us discover brand-new subatomic particles long before the first accelerators.

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Sources:
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Images:
https://commons.wikimedia.org/wiki/File%3APacini_measurement.jpg
https://commons.wikimedia.org/wiki/File:Hessballon.jpg
https://www.istockphoto.com/photo/panorama-colorful-balloons-floating-in-the-sky-in-the-mountain-landscape-in-the-gm1096489270-294418231
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https://youtu.be/E9335CW2V5M
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https://www.istockphoto.com/photo/pet-scan-of-the-brain-gm178066707-24722805
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https://commons.wikimedia.org/wiki/File:First_neutrino_observation.jpg
http://cds.cern.ch/record/39474
https://www.flickr.com/photos/departmentofenergy/13472280055/