The primary fuel source for nuclear power is uranium. Uranium-235 is the specific isotope commonly used in nuclear reactors. During the nuclear fission process, the nucleus of a uranium atom splits into smaller parts, releasing a significant amount of energy in the form of heat. This heat is then used to produce steam, which drives turbines to generate electricity. Nuclear power is considered a low-carbon energy source, helping to reduce greenhouse gas emissions, but it raises concerns about radioactive waste disposal and the potential for accidents, leading to ongoing discussions about its role in the global energy landscape.