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- About 46.6 billion light-yearsThe comoving distance to the edge of the observable universe is about 14.3 billion parsecs (about 46.6 billion light-years), about 2% larger. The radius of the observable universe is therefore estimated to be about 46.5 billion light-years.Mass (ordinary matter): 1.5×10⁵³ kgVolume: 3.566×10⁸⁰ m³en.wikipedia.org/wiki/Observable_universe
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Observable universe - Wikipedia
Number of galaxies and stars The observable universe contains as many as an estimated 2 trillion galaxies and, overall, as many as an estimated 10 stars – more stars (and earth-like planets) than all the grains of beach sand on planet Earth. As mentioned earlier, the estimated number of galaxies was … See more
The comoving distance from Earth to the edge of the observable universe is about 14.26 gigaparsecs (46.5 billion light-years or 4.40×10 m) in any … See more
The most distant astronomical object identified (as of September of 2022) is a galaxy classified as JADES-GS-z13-0. In 2009, a gamma ray burst, GRB 090423, was found to have a See more
Both popular and professional research articles in cosmology often use the term "universe" to mean "observable universe". This can be justified … See more
Sky surveys and mappings of the various wavelength bands of electromagnetic radiation (in particular 21-cm emission) have yielded much information on the content and … See more
• Bolshoi Cosmological Simulation – Computer simulation of the universe
• Causality (physics) – Physics of the cause–effect relation See moreWikipedia text under CC-BY-SA license Observable universe | Definition, Size, Description,
Web3 days ago · The observable universe is approximately 93 billion light-years in diameter. This number is derived from several considerations. A light-year, the distance light can travel in one Earth year, is 9.46 trillion …
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WebOct 10, 2012 · The time that has elapsed since the Big Bang is 13.75 billion years. Multiple the two figures and—voilà—we find that over the entire history of the universe, light could have travelled...
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WebNov 11, 2000 · This horizon describes the visible universe—a region some 28 billion light years in diameter. But what are the horizons of a civilization that inhabits the most distant galaxies we see?...
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WebJul 1, 2019 · Using today’s most powerful telescopes, astronomers see galaxies located over 13 billion light-years from Earth. (A light-year equals about 6 trillion miles, or 10 trillion kilometers.) Since they...
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WebThe visible universe appears to have a radius of 14 billion light years because the universe is about 14 billion years old. The light from more distant objects simply has not had time to reach us. For this reason …
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WebDoes it have a center? Does it have an edge? Is it getting bigger, and if so, why? Well, we know that there are two different meanings for universe. First, the observable universe is everything that we've been able to see or …
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