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Protons are positively charged subatomic particles that are found within the nucleus of an atom. Together with neutrons, they make up the nucleus, which is the central core of an atom. Protons are crucial in determining the identity of an atom, as the number of protons in the nucleus defines the element to which it belongs. For example, an atom with one proton is hydrogen, while an atom with 92 protons is uranium. Protons play a vital role in the structure of matter. They are responsible for the stability of atomic nuclei and dictate the chemical properties of elements. In addition, protons are involved in the process of nuclear fusion, which powers the sun and stars. Overall, protons are essential building blocks of matter, playing a key role in the composition and behavior of atoms. Their positive charge and interactions with other particles contribute to the diversity and complexity of the universe.