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...of the galaxies and their distance,<ref>{{cite journal|last1=Hubble|first1=Edwin|title=A relation between distance and radial velocity among extra-galactic ...e as <math>a\propto t^{2/3}</math>, making its current age 2/3 times the [[Hubble time]]. The Einstein–de Sitter universe became a standard model of the univ ...

...ame from measurements of the current expansion rate of the universe, the [[Hubble constant]] <math>H_0</math>, as well as cosmological models relating <math> ...an this Hubble time; typically the age would be between 66% and 90% of the Hubble time{{citation needed|date=May 2023|reason="It's unclear where this range c ...

...of [[Edwin Hubble]]'s observations<ref>{{cite journal |last=Hubble |first=Edwin |date=1929-03-15 |title=A relation between distance and radial velocity amo ...d of light. Simple calculation shows that the contemporaneous value of the Hubble constant in fact implied a value of ''D''² ~ 10⁻⁵⁵ cm ...

...10>{{cite journal |arxiv=1004.1856 |bibcode=2010ARA&A..48..673F |title=The Hubble Constant |author1=Freedman, Wendy L. |author2=Madore, Barry F. |volume=48 | ...ll known generally as Cepheids. This discrepancy was confirmed by [[Edwin Hubble]]'s 1931 study of the globular clusters around the [[Andromeda Galaxy]]. T ...

* As noted by [[Edwin Hubble]] and others, elliptical galaxies are rarely if ever observed to be more el ...

....archive.org/web/20190404084517/https://www.nytimes.com/2017/02/20/science/hubble-constant-universe-expanding-speed.html |url-status=live }}</ref><ref name=" ...tically predicted the universal expansion that was first observed by Edwin Hubble.</ref> ...

...also referred to as the principle of maximal aging, and was described by [[Edwin F. Taylor|Taylor]] and [[John Archibald Wheeler|Wheeler]] as:<ref> |author-link=Edwin F. Taylor ...

...l values which locate the most distant galaxies beyond the [[Hubble volume|Hubble sphere]] and therefore with [[Recessional velocity|recession velocities]] g ...e journal|title=A Remarkably Luminous Galaxy at ''z''=11.1 Measured with ''Hubble Space Telescope'' Grism Spectroscopy |journal=[[The Astrophysical Journal]] ...

...puAMw5U3UC&pg=PA160|title=Black Holes: An Introduction|last2=Thomas|first2=Edwin George|date=2010|publisher=Imperial College Press|isbn=978-1-84816-382-9|la ...ite web |url=http://seds.lpl.arizona.edu/messier/more/m001_hst.html |title=Hubble views the Crab Nebula M1: The Crab Nebula Filaments |access-date=26 January ...

...June 16, 2003). "UF Astronomers: Universe Slightly Simpler Than Expected". Hubble News Desk. Archived from the original on July 20, 2011. Retrieved March 4, ...an [[electric field]]. Hall-effect thrusters (based on the discovery by [[Edwin Hall]]) are sometimes referred to as '''Hall thrusters''' or '''Hall-curren ...