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What does Hubble’s law strengthen about the universe?

Answer and explanation

Correct answer: Expansion of the universe

Hubble’s law states that, on a large scale, the recessional velocity of a distant galaxy is related to its distance from us: v = H₀d. Thus, galaxies that are farther away generally show a greater red shift and appear to be moving away faster. This observation supports the conclusion that space itself is expanding, rather than proving that Earth occupies a special central position. Option A is correct because the systematic red shift of distant galaxies is strong observational evidence for an expanding universe. Options B, C, and D concern Earth’s shape or physical features and have no connection with Hubble’s law or galactic red shift.

Related tags

Hubble LawUniverse ExpansionRed ShiftCosmologyEarly And Modern TheoriesThe Origin And Evolution Of The EarthGeographyClass 11 Mcq

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