Scientists Find Strong Evidence for “Big Bang” (Great Events: 1900-2001)
Article abstract: Scientists found a pattern of radiation in the universe that provided strong evidence for the big bang theory, giving possible explanation for the origins of stars and galaxies.
The “Big Bang”
Astronomers believe that the universe originated about fifteen billion years ago in a tremendous explosion known as the “big bang.” Such an explosion would give off a great amount of heat radiation, in the same way that a fire heats up the area surrounding it. The radiation from the big bang filled the early universe, and since the radiation cannot get out of the universe, it is still here—a relic of an event that happened when the universe was very young. The radiation is known as the universal background radiation.
The universal background radiation from the big bang was first discovered in 1964 at Bell Laboratories in New Jersey by Robert Wilson and Arno Penzias. Since that time, astronomers have been studying the radiation very carefully, trying to understand the nature of the early universe.
The detailed pattern of the universal background radiation revealed that the early universe was perfectly smooth and had no irregularities of any kind. A serious question arose: How could the complex structure of stars, galaxies, clusters, and other elements of the universe have developed from an early stage of the universe that was uniform and had no structure?
(The entire section is 973 words.)
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