How do astronomers currently think the amount of detectable (observable) matter in the universe compares to the amount of dark matter and dark energy? A) the amount of detectable matter is about equal to the amount of dark matter & energy B) the amount of detectable matter is far greater than the amount of dark matter & energy C) the amount of detectable matter is far less than the amount of dark matter & energy D) the amount of detectable matter is about 1/10^th the amount of dark matter & energy E) there is no evidence for dark matter anywhere, so this is not a topic astronomers can make any estimates about Section 28.5: The Formation and Evolution of Galaxies and Structure in the Universe

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Quizplus · Accepted Answer

Observations of galaxy rotation curves and gravitational lensing suggest that there is far more mass in galaxies and clusters of galaxies than can be accounted for by the amount of detectable matter (stars, gas, and dust). This extra mass is believed to be made up of dark matter. Additionally, recent observations of the expansion rate of the universe suggest that the universe contains a significant amount of dark energy, which is causing the expansion of the universe to accelerate. These observations indicate that the amount of detectable matter makes up only a small fraction of the total matter and energy content of the universe. Therefore, the amount of detectable matter is far less than the amount of dark matter and dark energy.

How Do Astronomers Currently Think the Amount of Detectable (Observable)