Current observations indicate that the amount of baryonic matter and dark matter in the Universe

Question

Quizplus · Accepted Answer

Current observations suggest that the combined amount of baryonic matter (ordinary matter) and dark matter is not enough to stop the expansion of the Universe, implying that the Universe is open. This means it will continue to expand indefinitely, rather than being "closed" (which would imply eventual contraction) or having enough mass to "overcome" its expansion. The statement that baryonic and dark matter are mostly in the form of black holes and quasars (C) is incorrect, as dark matter does not interact with electromagnetic forces and thus cannot form such objects. The assertion that the amounts of baryonic matter and dark matter are roughly equal (D) is also incorrect; dark matter is believed to make up about five times the mass of baryonic matter in the universe.

Current Observations Indicate That the Amount of Baryonic Matter and Dark