Hubble Parameter (Noun)
Meaning
(cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today.
Classification
Nouns denoting quantities and units of measure.
Examples
- The Hubble parameter is a fundamental concept in cosmology that describes the rate at which the universe is expanding.
- The value of the Hubble parameter is crucial in determining the age and size of the universe.
- Astronomers use the Hubble parameter to estimate the distance to galaxies and other celestial objects.
- The Hubble parameter is not a constant over time, but rather changes as the universe evolves.
- The most recent measurements of the Hubble parameter have led to a greater understanding of the universe's expansion history.