NSF (National Science Foundation) is a United States government agency that supports research and education in all fields of science and engineering. It funds research projects, provides scientific equipment and facilities, and supports graduate student research through grants and fellowships. NSF plays a crucial role in advancing knowledge and innovation in areas such as biology, computer science, engineering, mathematics, and social sciences. Its mission is to promote the progress of science and enhance national security, economic competitiveness, and the well-being of society.