Fusion is the process by which atomic nuclei combine to form a heavier nucleus, releasing a large amount of energy in the process. It is considered a potential future energy source because it has several advantages over traditional fossil fuel sources.

One of the key advantages of fusion is its potential to provide a nearly limitless supply of energy. Fusion reactions can be fueled by hydrogen, which is the most abundant element in the universe. This means that, unlike fossil fuels, which are finite and can be depleted, fusion has the potential to provide a virtually limitless source of clean energy.

Another important advantage of fusion is its safety. Fusion reactions do not produce greenhouse gases or other pollutants, so they do not contribute to climate change or air pollution. Additionally, fusion reactions do not produce radioactive waste, which makes them safer than other forms of nuclear power.

Additionally, fusion has the potential to be more efficient than other forms of energy production. Fusion reactions release a large amount of energy from a relatively small amount of fuel, which means that they have the potential to produce a lot of power with a relatively small environmental footprint.

Overall, the potential advantages of fusion make it an attractive future energy source. While the technology to harness fusion on a large scale is still being developed, it has the potential to provide a clean, safe, and efficient source of energy that could help to meet the growing global demand for power.