What is Hubble's Law? Does it imply an expanding Universe?

Hubble's Law is an observation made by Edwin Hubble in 1929 that states that the farther away a galaxy is from us, the faster it is moving away from us.

This law is based on the idea that the Universe is expanding, meaning that all of the galaxies in it are getting farther away from each other.

This law is usually expressed as a mathematical equation, called the Hubble Constant, which states that the velocity of a galaxy (v) is proportional to its distance from us (d), or v=Hd, where H is the Hubble Constant.

The Hubble Constant is used to measure the rate at which the Universe is expanding, which is currently estimated to be about 71 km/s/Mpc (kilometers per second per megaparsec).

The observation of Hubble's Law implies that the Universe is expanding, as it implies that all galaxies are getting farther away from each other as time passes.

This is one of the major pieces of evidence that supports the Big Bang Theory, which states that the Universe was once in a very small and dense state and has been expanding ever since.

Hubble's Law can be used to measure distances to galaxies, as the velocity

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