The strongest piece of evidence that supports the Big Bang is the
A) fact that the universe is expanding
B) detection of dark matter in galaxies
C) fact that stars have finite lifetimes
D) detection of the cosmic microwave background radiation left over from the formation of the universe

Question

Quizplus · Accepted Answer

The detection of the cosmic microwave background radiation left over from the formation of the universe is the strongest piece of evidence supporting the Big Bang. The radiation is predicted by the Big Bang model and its detection in 1964 confirmed its existence, providing strong evidence for the Big Bang theory. The other options may support aspects of the Big Bang theory but are not as strong as the detection of cosmic microwave background radiation.

The Strongest Piece of Evidence That Supports the Big Bang