Why does the observation that all distant galaxies are moving away from Earth not violate the Cosmological Principle?
A) Any other galaxy in the Universe will also see the Universe expanding in the same way.
B) The night sky is still dark.
C) The motion of galaxies relative to Earth has nothing to do with the Cosmological Principle.
D) It does violate the Cosmological Principle but for only the location of Earth.

Question

Quizplus · Accepted Answer

The Cosmological Principle states that the Universe is homogeneous and isotropic on large scales, meaning it looks the same from any location. Thus, any observer in any galaxy would see other galaxies moving away, consistent with an expanding Universe.

Why Does the Observation That All Distant Galaxies Are Moving