Hubble's parameter
- noun
- /ˈhʌbəlz ˈpærəˌmɛtər/
- Specialized
:
parámetro de Hubble
- An accurate value for Hubble's parameter helps astronomers understand how fast the universe is expanding today.
Examples
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Scientists use the Hubble's parameter to estimate the age of the universe.
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The measurement of Hubble's parameter is crucial for modern cosmological research.
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The value of Hubble's parameter is crucial for understanding the universe's expansion.
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Many scientists have debated the accuracy of Hubble's parameters in recent studies.
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An accurate value for Hubble's parameter helps astronomers understand how fast the universe is expanding today.
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Researchers are focused on measuring Hubble's parameter to better predict the future expansion of the universe.
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The latest observations have led to new insights into Hubble's parameter, refining our understanding of cosmic expansion.
Synonyms
1
9.1
A number that shows how fast the universe is getting bigger
A number that shows how fast galaxies move apart depending on distance
A number that shows how fast the universe is expanding now
Surface Forms
Morphology
Hubble's + parameter
The phrase is compositionally a possessive proper name + 'parameter', so a learner who knows 'parameter' will infer this is a measured quantity associated with someone/something called Hubble. However, identifying that it specifically denotes the cosmological ratio (the universe's expansion rate) requires background knowledge of Hubble/Hubble's law, so the precise technical sense is not predictable from the parts alone.
Etymology
Hubble's parameter is named after astronomer Edwin Hubble and comes from the simple idea that galaxies move away faster the farther they are. Imagine dots on a balloon that gets bigger: the dots that are farther away move faster, so the number that compares speed and distance tells the current 'rate of expansion' of the universe.