Hubble's lawHubble's law
the law, formulated by Edwin Hubble, that the velocities of distant galaxies moving away from the earth are directly proportional to their distance from the earth
An empirical law of observational cosmology stating that the velocities at which galaxies in the universe recede from one another is directly proportional to the distances between them.
Origin of Hubble's lawAfter Edwin Powell Hubble, who first formulated it.
- (singular only) Alternative spelling of Hubble law.