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About 80 times heavier than protons, W bosons are among the heaviest of nature’s fundamental particles, which can’t be broken down into smaller bits.—Clara Moskowitz, Scientific American, 10 Apr. 2026 String theory argues that the fundamental particles that make up matter are themselves made of vibrating strings of energy.—Zachary Slepian, The Conversation, 30 Mar. 2026 The gravitational pressure could be so extreme as to crush neutrons into their building blocks, which are fundamental particles called quarks and the gluons that ordinarily bind quarks together to form protons and neutrons.—Keith Cooper, Space.com, 15 Mar. 2026 Because the energy released in Hawking radiation doesn’t favor one type of particle over another, the final burst would include all 17 fundamental particles in the Standard Model, our benchmark model explaining the cosmos.—Quanta Magazine, 23 Jan. 2026 See All Example Sentences for fundamental particle