Question

Over the last ninety years, scientists have added to the body of evidence supporting the Big Bang Theory. One statement provides evidence for the model of the Big Bang as illustrated here: that the universe expanded and continues to expand. All BUT ONE piece of evidence may be cited to support this model.

A) Cosmic microwave background radiation
B) Redshift of distant galaxies
C) Abundance of light elements
D) Existence of dark matter

Answer 1

The existence of dark matter is not direct evidence for the expansion of the universe postulated by the Big Bang Theory, unlike cosmic microwave background radiation, redshift of distant galaxies, and abundance of light elements.

Step-by-step explanation:

Out of the pieces of evidence listed for supporting the model of the Big Bang and the ongoing expansion of the universe, all but one, which is the existence of dark matter, typically serve as evidence. The cosmic microwave background radiation (CMB), the redshift of distant galaxies, and the abundance of light elements are all strong pieces of evidence supporting the Big Bang Theory. However, the existence of dark matter, while important to cosmology and understanding the universe's structure, does not directly provide evidence for the universe's expansion. Dark matter is inferred mostly from its gravitational effects on visible matter, radiation, and the large-scale structure of the universe.