The Cartwheel Galaxy seen by Webb: a bright core and an outer ring of star formation left by a collision with a smaller galaxy.

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Particle Physics

Particle physics asks what matter is made of and which forces hold it together. These explainers cover the Standard Model and the Higgs boson, how charged particles lose energy in matter, the silicon sensors and photodetectors that record them, neutrino experiments such as JUNO, and the colliders at CERN that are now planning their successor.

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Cartwheel Galaxy. NASA, ESA, CSA, STScI. Public domain.

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Concepts, A to Z

Every topic tagged in this section. Each concept opens its own reading list.

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