The difference is that an Astronomer studies how planets, stars,
or galaxies from and evolve, a Cosmologist studies how the entire
universe is formed and tries to predict how it will change in the
future. What do Cosmologists and Astronomers have in common?
Most cosmologists and astronomers both believe in the Big Bang Theory.
How do Cosmologists explain the "birth" of the universe,
and what evidence is there to support the theory?
Cosmologists explain the (birth) of the universe through the Big Bang
Theory. It is the theory that all matter and energy in the universe was
compressed into a small volume that 13 to 15 billion years
ago exploded and began expanding in all directions. In the year
1965 researchers had detected cosmic background radiation,
meaning it uniformly detected from every direction in space; considered a remnant
of the big bang. Astronomers think that this background radiation
formed after the big
bang
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