Considering matter and energy together, the largest component of the universe seems to be
A) electromagnetic radiation of various kinds.
B) ordinary matter.
C) dark matter.
D) dark energy.

Question

Quizplus · Accepted Answer

Recent studies suggest that about 68% of the universe is composed of dark energy, which appears to be driving the accelerating expansion of the universe. Dark matter makes up about 27% of the universe, while ordinary matter (including stars, planets, and galaxies) is only about 5%. Electromagnetic radiation, including visible light, is a small but important component of the universe, but it is vastly outnumbered by dark matter and dark energy.

Considering Matter and Energy Together, the Largest Component of the Universe