Hubble's Constant (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 most recent measurements of Hubble's constant using different methods have provided contradictory results, fueling ongoing debates among cosmologists.
- Scientists rely on Hubble's constant to determine the rate at which the universe is expanding and how fast galaxies are moving away from us.
- To better understand the history and evolution of the universe, researchers have been working to refine the value of Hubble's constant.
- One of the main challenges in modern cosmology is resolving the discrepancy in the various estimations of Hubble's constant.
- The newly developed equipment allows astronomers to estimate the value of Hubble's constant with increased precision, thus shedding more light on the expansion of the cosmos.