4) 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.
Answer:A
4) 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.