Astronomy
1. Discovery of Saturn’s Rings - Galileo Galilei (1610)
2. Discovery of Neptune - Johann Galle (1846)
3. Discovery of Black Holes (Mathematically) - Karl Schwarzschild (1916)
4. Discovery of Pulsars - Jocelyn Bell Burnell (1967)
5. Exoplanets (First Confirmed) - Michel Mayor and Didier Queloz (1995)
6. Dark Energy Discovery - Saul Perlmutter, Brian Schmidt, and Adam Riess (1998)
7. Discovery of Andromeda Galaxy as Separate from the Milky Way - Edwin Hubble (1924)
8. Formation of Solar System (Nebular Hypothesis) - Pierre-Simon Laplace (1796)
Social