Hubble constant

Speech parts

1. Hubble constant - Noun

2. Hubble constant - Proper 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

Synonyms

Hypernyms

Related terms

Examples

In our natural units, it is simply the inverse of the Hubble constant H at the time. Source: Internet

Other observations, such as the Hubble constant, the abundance of galaxy clusters, weak gravitational lensing and globular cluster ages, are generally consistent with these, providing a check of the model, but are less accurately measured at present. Source: Internet

The value of the Hubble constant is estimated by measuring the redshift of distant galaxies and then determining the distances to the same galaxies (by some other method than Hubble's law). Source: Internet

Determining the Hubble constant Value of the Hubble Constant including measurement uncertainty for recent surveys. Source: Internet

In the 1931 high-impact English translation of this article a critical equation was changed by omitting reference to what is now known as the Hubble constant. Source: Internet

The Hubble constant becomes relevant when converting an observed redshift z into a distance d using the formula d ≈ ( / H) × z. citation One gigaparsec (Gpc) is one billion parsecs — one of the largest units of length commonly used. Source: Internet

Close letter words and terms