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(10-06-2025, 10:01 PM)Tee tiong huat Wrote: What is Ultra-high-energy neutrinos?
(UHE neutrinos) are subatomic particles with energies greater than 10 petaelectronvolts (PeV), mean a level of energy that allows them to travel vast cosmic distances & potentially reveal info about most energetic events in the universe. Neutrinos are created when ultra-relativistic cosmic rays interact with other particles or photons.
Key aspects of UHE neutrinos: Origin
They are thought to be produced in the same environments that create high-energy cosmic rays & gamma rays, such as active galactic nuclei, gamma-ray bursts, & other extreme cosmic events.
Detection Challenges:
UHE neutrinos are extremely rare and interact weakly with matter, making them difficult to detect.
Importance in Astronomy:
Their ability to travel through space without being significantly deflected or absorbed by interstellar material makes them useful for studying distant astrophysical objects and processes.
Potential to Reveal New Physics:
The study of UHE neutrinos may provide clues about the nature of cosmic rays, new fundamental physics, and the evolution of the universe.
What do neutrinos do to oneself your body?.
Every second, about 10 trillion neutrinos are zipping through your body. But because these ghostly particles have hardly any mass, no electric charge, and rarely interact with matter, you don't feel a thing.
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(10-06-2025, 10:01 PM)Tee tiong huat Wrote: What's Ultra-high-energy neutrinos?
(UHE neutrinos) are subatomic particles with energies greater than 10 petaelectronvolts (PeV), mean a level of energy that allows them to travel vast cosmic distances & potentially reveal info most energetic events in the universe. Neutrinos are created when ultra-relativistic cosmic rays interact with any other particles or photons.
Key aspects of UHE neutrinos: Origin
They are thought to be produced in the same environments that create high-energy cosmic rays & gamma rays, such as active galactic nuclei, gamma-ray bursts, & other extreme cosmic events.
Detection Challenges:
UHE neutrinos are extremely rare and interact weakly with matter, making them difficult to detect.
Importance in Astronomy:
Their ability to travel through space without being significantly deflected or absorbed by interstellar material makes them useful for studying distant astrophysical objects and processes.
Potential to Reveal New Physics:
The study of UHE neutrinos may provide clues about the nature of cosmic rays, new fundamental physics, and the evolution of the universe.
What happens if a neutrino hits you?.
Fortunately, be'cos neutrinos are so weakly interacting, they are completely harmless: although hundreds of billions of solar neutrinos are passing through you or me at this very moment (even if it happens to be night-time – they pass through the Earth too, no problem), the chances that one of them will interact with an ...
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(10-06-2025, 09:48 PM)Tee tiong huat Wrote: A particle from the farthest reaches of the universe has been detected at the bottom of the Mediterranean Sea.
The deep blue waters of Mediterranean Sea harbor many secrets, but none as extraordinary
- as recently detected by scientists. In February 2023, the KM3NeT telescope, located 2,450 meters beneath the sea surface, captured evidence of an ultra-high-energy neutrino – a subatomic particle that traveled across vast cosmic distances be4 reaching Earth
Including those within sun. They are also found in radioactive decay processes, like those occurring in bananas, where the potassium decays, emitting neutrinos.
Neutrinos can be detected by giant underground detectors or through methods like SNOBAL, which uses a large sphere of photo-detectors filled with heavy water.
Here's a more detailed explanation:
Neutrino Production:
Neutrinos are generated during nuclear reactions, such as nuclear fusion in the sun or nuclear fission in reactors. They are also a byproduct of radioactive decay, where an atomic nucleus releases energy & particles, including neutrinos.
Types of Neutrinos:
There are three known flavors of neutrinos: electron, muon, and tau neutrinos.
Detection:
Neutrinos are extremely weakly interacting, making them difficult to detect. They usually pass through matter without interacting. Detectors are often placed deep underground to shield them from cosmic rays, which can mimic neutrino signals. Examples of neutrino detectors include giant underground detectors, such as Super-Kamiokande, or more specialized detectors like SNOBAL.
Neutrino Mass:
While it was once believed that neutrinos had zero mass, experiments have shown that they have finite, though very small, masses. The mass of a neutrino is measured in electron volts (eV), with some experiments finding that the mass of a neutrino is less than 0.002% that of an electron according to Britannica
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Posts: 25,621
   
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As farthest we reaches out to universe the more we detected a bottomless hole.
James Webb Space Telescope identified a galaxy so ancient farthest it reshaping understanding of early universe, galaxy, named MoM-z14, holds current record for distant confirmed galaxy redshift of 14.44, placing just a few hundred million years after the Big Bang. What makes MoM-z14 extraordinary isn’t distance
but its characteristics. Despite only 500 light-yrs, MoM-z14 unexpected bright b
teeming w/newborn stars. This galaxies early stage in universe’s history expected be faint, primitive, chemically simple. Yet MoM-z14 none of these, lacks a super massive black hole, a feature typically present in highly active star-forming galaxies,& its light spectrum reveals an unusually high concentration of nitrogen
chemical richness suggests multiple generations of stars had already lived & died—far earlier than current models predict, findings challenge long-standing assumptions in cosmology. Galaxies like MoM-z14, once considered rare, are appearing more frequently in JWST’s deep-field surveys. Their abundance, brightness,& complexity suggest early universe may been far more dynamic than previously believed. As JWST continues observations by astronomers, anticipate uncovering many more such galaxies. Each one offering a glimpse into a formative period of cosmic history, one that may ultimately force us to rethink the fundamental models of galaxy formation itself...
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(12-06-2025, 09:49 PM)Tee tiong huat Wrote: As farthest we reaches out to universe the more we detected a bottomless hole. James Webb Space Telescope identified a galaxy so ancient farthest it reshaping understanding of early universe, galaxy, named MoM-z14, holds current record for distant confirmed galaxy redshift of 14.44, placing just a few hundred million years after the Big Bang. What makes MoM-z14 extraordinary isn’t distance
but its characteristics. Despite only 500 light-yrs, MoM-z14 unexpected bright & teeming w/newborn stars. This galaxies early stage in universe’s history expected be faint, primitive, chemically simple. Yet MoM-z14 none of these, lacks a super massive black hole, a feature typically present in highly active star-forming galaxies,& i
light spectrum reveals unusually high concentration of nitrogen chemical richness suggests multiple generation of stars already lived & died far earlier than current models predict, findings challenge long-standing assumptions in cosmology. Galaxies like MoM-z14, once considered rare, are appearing more frequently in JWST’s deep-field surveys. Their abundance brightnes & complexity suggest its early universe may been far more dynamic than previously believed. JWST continues observations by astronomers, they anticipate uncovering many more such galaxies. Each one offering a glimpse into a formative period of cosmic history, one that may ultimately force us to rethink the fundamental models of galaxy formation itself... 
https://youtu.be/KXTNUtux5xg?si=YCEtbMMtVwoYqL5b
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(12-06-2025, 09:49 PM)Tee tiong huat Wrote: As farthest we reaches out to universe the more we detected a bottomless hole.
James Webb Space Telescope identified a galaxy so ancient farthest it reshaping understanding of early universe, galaxy, named MoM-z14, holds current record for distant confirmed galaxy redshift of 14.44, placing just a few hundred million years after the Big Bang. What makes MoM-z14 extraordinary isn’t distance
but its characteristics. Despite only 500 light-yrs, MoM-z14 unexpected bright b
teeming w/newborn stars. This galaxies early stage in universe’s history expected be faint, primitive, chemically simple. Yet MoM-z14 none of these, lacks a super massive black hole, a feature typically present in highly active star-forming galaxies,& its light spectrum reveals an unusually high concentration of nitrogen
chemical richness suggests multiple generations of stars had already lived & died—far earlier than current models predict, findings challenge long-standing assumptions in cosmology. Galaxies like MoM-z14, once considered rare, are appearing more frequently in JWST’s deep-field surveys. Their abundance, brightness,& complexity suggest early universe may been far more dynamic than previously believed. As JWST continues observations by astronomers, anticipate uncovering many more such galaxies. Each one offering a glimpse into a formative period of cosmic history, one that may ultimately force us to rethink the fundamental models of galaxy formation itself... 
https://youtube.com/shorts/PkTiDGkbi14?s...tRu06izvx_
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(27-05-2025, 12:31 PM)Tee tiong huat Wrote: Iran Nuclear scientists total six, may have be discovered kill by powerful Israel missiles. on earlier Friday
https://youtube.com/shorts/DlYFISlHlhU?s...m2IzPx8mG5