As we look at larger and larger scales in the universe, we find:
A)smaller and smaller masses.
B)almost exclusively visible matter.
C)a larger and larger percentage of the matter is visible.
D)a larger and larger percentage of the matter is dark.
E)an equal amount of visible and dark matter.

Question

Quizplus · Accepted Answer

As we look at larger and larger scales in the universe, we find that the majority of matter is dark matter, which does not interact with light and therefore cannot be directly observed. Estimates suggest that approximately 85% of the matter in the universe is dark matter, with only 15% being visible or "ordinary" matter. Therefore, as we go to larger scales, we find a larger and larger percentage of the matter in the universe is dark. As we look at larger and larger scales in the universe, we find that a larger and larger percentage of the matter is dark. This is inferred from observations of galaxy rotation curves, cosmic microwave background radiation, and gravitational lensing. Dark matter is thought to make up about 27% of the universe, while visible matter makes up only about 5%.

As We Look at Larger and Larger Scales in the Universe