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How fast is the universe expanding in light years?  | HIX Tutor

<p>A light year is a measure of distance, not time....</p>

Josiah Adams

The expansion rate of the universe, known as the Hubble constant, is approximately 70 kilometers per second per megaparsec. This means that for every megaparsec (about 3.26 million light-years) of distance, objects appear to be moving away from us at a rate of about 70 kilometers per second.