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Protons are fundamental particles found in the nucleus of an atom. They are positively charged and play a crucial role in determining the properties of an element. Together with neutrons, protons make up the majority of an atom's mass, while electrons orbit the nucleus. The number of protons in an atom defines its atomic number, which in turn determines its chemical properties and place on the periodic table. Protons are also responsible for the strong nuclear force that holds the nucleus together, overcoming the electrostatic repulsion between positively charged protons. In the larger universe, protons are found in cosmic rays, stars, and interstellar gas clouds. They are essential building blocks of matter and play a key role in nuclear reactions that power stars and trigger fusion processes. In conclusion, protons are not only crucial components of all matter on Earth but also play a significant role in the larger cosmos. Their unique properties and interactions are fundamental to our understanding of the universe.