Two observations form the basis of the Big Bang theory, the first, Hubble demonstrated that the universe is expanding uniformly. What was the second observation, who discovered it, where and when?

peasypod

Do you mean Fred Hoyle? His theory made a definite prediction that nothing should have less than about 23 per cent helium. (Attributing helium to the Big Bang Theory, Hoyle realized that helium is the only element that would be created prolifically in a "big bang.") The theory of synthesis of elements in stars and supernovae couldn't explain why there was so much helium, and why the helium was so uniform in its abundance. Hoyle 1964 Cambridge Not sure though Hamlet if this is what you are looking for in your question as alot of scientists were involved - Wagoner, Tayler ... [Feb 17 04 12:55 AM] peasypod writes: I think what Ham is looking for is the discovery of the cosmic background radiation by Penzias & Wilson (I am guessing 1963?) for which they dubiously won the Nobel prize. All the info is in a previous question about dodgy Nobel laureates. Feb 16 04, 10:26 PM

Hamlet.

Your second answer is correct...The earth is bathed in a glow of radiation that has the characteristics expected from a remnant of a hot primeval fireball. This radiation was discovered by Arno A. Penzias (b.1933) and Robert W. Wilson (b.1936) of Bell Telephone Laboratories. Feb 17 04, 9:36 AM

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Who came up with the term "Big Bang"? Who first proposed "the big bang theory?" Who was the first person to propose the Big Bang theory? When was the big bang and what else do you know about it?

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