From the Big Bang till the Big Bang Theory

“In theory there is no difference between theory and practice. In practice there is.”

This is a brief history of how practice and theory are far apart.

How many years ago:

• 13.8 Billion: Big bang
• 13.6 Billion: Milky Way formed
• 4,5 Billion: Sun/Earth
• 3.8 Billion: Life develops
• 1 Billion: Bacteria
• 500 million: Fish
• 360 million: First animal on land
• 200 million: Mammals
• 2.5 million: Appearance of Homo.
• 200,000: Modern humans.
• 12.000: Agricultural revolution
• 5000: Writing
• 750: Universities emerge
• 333: Newton’s Philosophiae Naturali
• 115: Einsteins Special Relativity
• 88: Lemaître formalized Big Bang Theory
• 30: Satellite data, such as COBE, the Hubble Space Telescope and WMAP support the theory.
• 1: Last episode of Big Bang Theory television series
• 0: You read this

Milikan, Lemaître and Einstein

Sources:

BigPictureSmallWorld: Home

History of the Big Bang theory