Fusion energy research is focused on developing technologies that can replicate the nuclear fusion reactions that occur in the core of the sun and other stars. Fusion reactions involve combining light atomic nuclei like hydrogen isotopes to release large amounts of energy. This research area aims to harness this energy to create a sustainable and clean source of power that could potentially replace fossil fuels and help mitigate climate change. Scientists are working on developing fusion reactors that can achieve and sustain these high-temperature and high-pressure conditions necessary for fusion reactions to occur, as well as finding ways to efficiently capture and utilize the energy produced.