100 Greatest Discoveries - Astronomy

Scientists have transformed the way we think and live throughout the centuries. What are the most important scientific discoveries of all time?
  • The Planets Move (2000 B.C. – 500 B.C.)
  • The Earth Moves (1543)
  • Planetary Orbits Are Elliptical (1605 – 1609)
  • Jupiter Has Moons (1609 – 1612)
  • Halley's Comet Has a Predictable Orbit (1705 – 1758)
  • The Milky Way Is a Gigantic Disk of Stars (1780 – 1834)
  • General Relativity (1915 – 1919)
  • The Universe Is Expanding (1924 – 1929)
  • The Center of the Milky Way Emits Radio Waves (1932)
  • Cosmic Microwave Background Radiation (1964) 
  • Gamma-Ray Bursts (1969 – 1997)
  • Planets Around Other Stars (1995 – 2004)
  • The Universe Is Accelerating (1998 – 2000)


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