Which of the following best describes what we mean by the universe?
A) The sum total of all matter and energy.
B) A vast collection of stars that number as many as the grains of sand on all the beaches on Earth.
C) All the galaxies in all the superclusters.
D) The universe is another name for our Milky Way Galaxy.

Question

Quizplus · Accepted Answer

The universe refers to the entirety of all matter and energy, including galaxies, stars, planets, and any other celestial bodies.

Answer: C
 The universe includes all the galaxies in all the superclusters.

Answer: None of the above
 None of the choices accurately describe the universe. Choice B only describes a portion of the universe (the stars), and choice D is a common misconception as the universe is not limited to just our Milky Way Galaxy.

Which of the Following Best Describes What We Mean by the Universe