On which scale is the universe clearly *not* homogeneous according to the text?
Answer
Within a galaxy or a local cluster of galaxies
On small scales, such as within a galaxy or a local cluster, the universe is clearly not homogeneous due to the presence of distinct structures like stars, dust, and voids.
Related Questions
What concept describes the universe looking the same in every direction?What two properties together form the Cosmological Principle?What observation provides the most powerful evidence supporting the universe's uniformity?Approximately how small is the temperature difference found in the CMB across different directions?On which scale is the universe clearly *not* homogeneous according to the text?What apparent paradox arises from distant regions matching CMB temperatures without having been in causal contact?What expected directional variation in the CMB must cosmologists subtract due to our local motion?If a significant anisotropy in expansion were confirmed, what leading theory proposed to explain current uniformity might need revisiting?Approximately what scale size marks the threshold where the variance of matter density sharply drops, confirming homogeneity?What observational finding directly challenges the assumption of strict isotropy in the universe's evolution?