The age of the universe can be estimated or constrained from

Question

Quizplus · Accepted Answer

The age of the universe can be estimated or constrained from all of the above choices.

A) The age of the oldest objects such as globular clusters can provide a lower limit for the age of the universe because the universe must be at least as old as the oldest objects in it.

B) The distances of galaxies beyond our Local Group of galaxies can provide information about the expansion rate of the universe and therefore the age of the universe.

C) The rate of recession of the galaxies beyond Local Group can also provide information about the expansion rate of the universe and therefore the age of the universe. The age of the universe can be estimated or constrained from all of the observations listed. The age of the oldest objects such as globular clusters provides a lower limit to the age of the universe, while the distances of galaxies beyond our Local Group and the rate of recession of the galaxies beyond Local Group provide upper limits to the age of the universe. Combining all of these observations provides a range for the age of the universe.

The Age of the Universe Can Be Estimated or Constrained