In our description of the universe,what does the word "isotropic" mean?
A) The expansion is the same in all directions.
B) The speed of expansion is the same at all distances.
C) The speed of expansion at any given distance is the same at all times.
D) The universe is the same everywhere,neither expanding nor contracting.

Question

Quizplus · Accepted Answer

"Isotropic" means that the universe looks the same in all directions, and thus the expansion must be the same in all directions.

In Our Description of the Universe,what Does the Word "Isotropic