observable universe wikipedia - EAS
- The observable universe is a spherical volume (a ball) centered on the observer, regardless of the shape of the universe as a whole. Every place in the universe has its own observable universe, which may or may not overlap with the one centered on Earth.
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See all on Wikipediahttps://en.wikipedia.org/wiki/Observable_universeThe 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, because the electromagnetic radiation from these objects has had time to reach the Solar System … 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 character of the universe's structure. The organization of structure appears to follow a See more
Assuming the mass of ordinary matter is about 1.45×10 kg as discussed above, and assuming all atoms are hydrogen atoms (which are about … See more
• Bolshoi Cosmological Simulation – Computer simulation of the universe
• Causality (physics) – Physics of the cause–effect relation See moreThe 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 … See more
The mass of the observable universe is often quoted as 10 tons or 10 kg. In this context, mass refers to ordinary matter and includes the See more
The most distant astronomical object identified (as of 2022) is a galaxy classified as HD1, with a redshift of 13.27, corresponding to a distance of about 33.4 billion light years. In … See more
Wikipedia text under CC-BY-SA license- https://simple.wikipedia.org/wiki/Observable_universe
In Big Bang cosmology, the observable universe is what, in theory, can be seen from Earth. That is light, or other signals, which has had time to reach the Earth since the beginning of the …
- https://en.wikipedia.org/wiki/Universe
The universe is composed almost completely of dark energy, dark matter, and ordinary matter. Other contents are electromagnetic radiation (estimated to constitute from 0.005% to close to 0.01% of the total mass-energy of the universe) and antimatter.
The proportions of all types of matter and energy have changed over the histor…Wikipedia · Text under CC-BY-SA license- Mass (ordinary matter): At least 10⁵³ kg
- Age (within Lambda-CDM model): 13.799 ± 0.021 billion years
- https://en.wikipedia.org/wiki/Observable
- In physics, an observable is a physical quantity that can be measured. Examples include position and momentum. In systems governed by classical mechanics, it is a real-valued "function" on the set of all possible system states. In quantum physics, it is an operator, or gauge, where the property of the quantum state can be determined by some sequenc...
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- https://beyond-universe.fandom.com/wiki/Observable_Universe
The Observable Universe contains all of space, time and everything. Currently, the observable universe is 92,200,000,000 ± 140,315,000 light-years across, and makes up 4.9% of the entire …
- https://en.wikipedia.org/wiki/Big_Bang
During inflation, the universe undergoes exponential expansion, and the particle horizon expands much more rapidly than previously assumed, so that regions presently on opposite sides of the observable universe are well inside each …
- https://en.wikipedia.org/wiki/Expansion_of_the_universe
The universe could be infinite in extent or it could be finite; but the evidence that leads to the inflationary model of the early universe also implies that the "total universe" is much larger …
- https://en.wikipedia.org/wiki/Cosmological_horizon
Main article: Particle horizon. The particle horizon (also called the cosmological horizon, the comoving horizon, or the cosmic light horizon) is the maximum distance from which light from …
- https://en.wikipedia.org/wiki/Galaxy
A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity. The word is derived from the Greek galaxias (γαλαξίας), literally 'milky', a reference to the Milky Way galaxy that contains …
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