MathLiveHubble–Lemaître law
States that galaxies recede from us at a speed proportional to their proper distance, with the Hubble constant as the proportionality factor. It is used in cosmology to estimate distances from redshifts and to describe the expansion of the universe.
v=H_0DWhat the symbols mean
| recessional velocity of a galaxy (km/s) | |
| Hubble constant, the present-day expansion rate (km/s/Mpc) | |
| proper distance to the galaxy (Mpc) |
About this formula
- FieldEarth and space
- TopicCosmology
- LevelUniversity
- Also calledHubble's law, Hubble law, recession velocity of galaxies, velocity distance relation, Hubble constant formula, galaxy recession law
- SourceWikidata Q179916
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