David N. Spergel

David N. Spergel is an American astrophysicist known for his work studying the universe's origin, structure, and evolution. He contributed significantly to our understanding of dark matter, dark energy, and the cosmic microwave background—the remnants of the Big Bang. Spergel has served as a director at NASA’s Goddard Space Flight Center and has been involved in major space missions like the WMAP satellite, which provided detailed insights into the universe’s early moments. His research helps unravel fundamental questions about how the universe started, its current state, and its future.