John N. Bahcall

John N. Bahcall was a prominent astrophysicist known for his groundbreaking work in neutrino physics and solar astrophysics. He played a key role in understanding the Sun's energy production through nuclear fusion and predicted the number of neutrinos that would be emitted. His research revealed a discrepancy between expected and observed neutrino counts, leading to the discovery of neutrino oscillation, which showed that neutrinos have mass and can change types. His work has significantly advanced our understanding of fundamental particle interactions and the processes powering stars, impacting both astrophysics and particle physics.