Hubble's law

Hubble's law, in astronomy, statement that the distances between galaxies (see galaxy) or clusters of galaxies are continuously increasing and that therefore the universe is expanding.

Sections in this article:

• Introduction
• Discovery and Explanation of the Red Shift
• Relative Motion of the Galaxies
• Bibliography

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

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