100 Greatest Discoveries: Astronomy

Bill Nye “The Science Guy” hosts a new series that highlights the greatest scientific discoveries of all time, from the earliest time to the present day. The series features nine episodes: Evolution, Earth Sciences, Medicine, Physics, Astronomy, Chemistry, Genetics and Biology, plus a wrap up episode featuring the top 10 discoveries of all time.

In this episode:
1. The Planets Move (2000 B.C. – 500 B.C.)
2. The Earth Moves (1543)
3. Planetary Orbits Are Elliptical (1605 – 1609)
4. Jupiter Has Moons (1609 – 1612)
5. Halley’s Comet Has a Predictable Orbit (1705 – 1758)
6. The Milky Way Is a Gigantic Disk of Stars (1780 – 1834)
7. General Relativity (1915 – 1919)
8. The Universe Is Expanding (1924 – 1929)
9. The Center of the Milky Way Emits Radio Waves (1932)
10. Cosmic Microwave Background Radiation (1964)
11. Gamma-Ray Bursts (1969 – 1997)
12. Planets Around Other Stars (1995 – 2004)
13. The Universe Is Accelerating (1998 – 2000)