166 Chapter 3 The Universe Was Born With a Big Bang
Three Pieces of Evidence for the Big Bang Theory
At first, most scientists considered the Big Bang theory to be outlandish. But over time,
observations were made that supported the theory, and more scientists began to endorse it.
Evidence of the Big Bang, Exhibit A: Cosmic Microwave Background Radiation
In 1964, the US company Bell Laboratories made an accidental discovery while moni-
toring radio waves reflected from radio balloons. It determined that the background
interference or “noise” in the data was being caused by a microwave signal of a specific
wavelength that was coming from all ...
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