# What relationship exists between the speed of the galaxies moving apart and their initial distances from one another?

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#### Explanation

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Aug 25, 2016

Hubble's Law. The farther they are, the higher their velocity will be.

#### Explanation:

The velocity at which galaxies recede from each other is proportional to their distance from each other. The constant of proportionality is $H$, Hubble's constant.

$v = H r$

where $H = 500$ $\frac{k m}{s} / M p c$

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