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- The observable universe is a region of the universe that we can observe from Earth or through telescopes and probes1. It comprises all matter whose electromagnetic radiation has had time to reach us since the beginning of the cosmological expansion. However, the entire universe beyond the observable part remains unknown2.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.The observable universe is a ball-shaped region of the universe comprising all matter that can be observed from Earth or its space-based telescopes and exploratory probes at the present time; the electromagnetic radiation from these objects has had time to reach the Solar System and Earth since the beginning of the cosmological expansion.en.wikipedia.org/wiki/Observable_universeToday the universe has expanded into an age and size that is physically only in parts observable as the observable universe, which is approximately 93 billion light-years in diameter at the present day, while the spatial size, if any, of the entire universe is unknown.en.wikipedia.org/wiki/Universe
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Observable universe - Wikipedia
The observable universe is a spherical region of the universe consisting of all matter that can be observed from Earth or its space-based telescopes and exploratory probes at the present time; the electromagnetic radiation from these objects has had time to reach the Solar System and Earth since the beginning of … See more
Number of galaxies and stars
The observable universe contains as many as an estimated 2 trillion galaxies and, overall, as many … See moreThe most distant astronomical object identified (as of August of 2024) is a galaxy classified as JADES-GS-z14-0. In 2009, a gamma ray burst, GRB 090423, was found to have a redshift of 8.2, which indicates that the collapsing star that caused it exploded … See more
Both popular and professional research articles in cosmology often use the term "universe" to mean "observable universe". This can be justified on the grounds that we can never know anything by direct observation about any part of the universe that is 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 direction. The observable universe … See more
Sky surveys and mappings of the various wavelength bands of electromagnetic radiation (in particular 21-cm emission) have yielded much … See more
• Bolshoi cosmological simulation – Computer simulation of the universe
• Causality (physics) – Physics of the cause–effect relation
• Chronology of the universe – History and future of the universe See moreWikipedia text under CC-BY-SA license Observable universe | Definition, Size, Description,
WEBAug 21, 2024 · Observable universe, the region of space that humans can actually or theoretically observe with the aid of technology. The observable universe, which can be thought of as a bubble with Earth at its centre, is …
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WEBConnecting theoretical models for the very early universe — cosmic inflation or an alternative scenario — with observable effects. Whatever happened in the first split-second after the Big Bang, it occurred while the universe …
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APOD: 2022 March 16 - The Observable Universe
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WEBJan 28, 2022 · The observable universe. In 2013, the European Space Agency's Planck space mission released the most accurate and detailed map ever made of the universe's oldest light. The map revealed that the...
Universe - Wikipedia
WEBToday the universe has expanded into an age and size that is physically only in parts observable as the observable universe, which is approximately 93 billion light-years in diameter at the present day, while the spatial …
The Entire Known Universe, in a Single Image. Here's …
WEBJan 17, 2018 · Created by musician and artist Pablo Carlos Budassi, the image is based on logarithmic maps of the Universe put together by Princeton University researchers, as well as images produced by NASA …
The Universe Is Not Locally Real, and the Physics Nobel Prize …
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This new interactive map lets you scroll through the universe
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