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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 is thus a sphere with a diameter of about 28.5 gigaparsecs (93 billion light-years or 8.8×10 m). Assuming that space is roughly … See more
The universe's size is unknown, and it may be infinite in extent. Some parts of the universe are too far away for the light emitted since the See more
Number of galaxies and stars
The observable universe contains as many as an estimated 2 trillion galaxies and, overall, as … See moreThe 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 on the grounds that we can never know … 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 WEBLearn about the observable universe, the region of space that humans can observe with technology, and its size, expansion, and technology. The observable universe is more than 46 billion light-years in any direction …
WEBJul 26, 2020 · Learn how the observable universe is 93 billion light years in diameter and 46.5 billion light years across, and how the expansion of …
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WEBMultiple the two figures and—voilà—we find that over the entire history of the universe, light could have travelled 13.75 billion light-years, or 81 billion trillion miles.
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