#gravitational — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #gravitational, aggregated by home.social.
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#KnowledgeByte: #Abell209 is a massive #Galaxy #Cluster located in the constellation Cetus, approximately 2.8 to 3 billion light-years from Earth.
The cluster contains over 100 galaxies and its immense mass warps spacetime, allowing astronomers to study dark matter through a phenomenon called #Gravitational #Lensing.
https://knowledgezone.co.in/posts/Abell-209-and-Spacetime-Warping-69160164eeb3621d436d25de
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The shape of this galaxy admittedly appears to be somewhat bizarre, so confusion would be forgiven. This is due to a cosmic phenomenon called #Gravitational #Lensing.
The gravitational influence of a massive galaxy cluster called SDSS J1110+6459 is causing the surrounding space-time to bend and warp, affecting the passage of any nearby light
https://knowledgezone.co.in/trends/browser?topic=Gravitational-Lens
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The #CosmicWeb is made up of large #voids delimited by long filaments of #matter at the intersection of which vast #gravitational structures are formed: #galaxies grouped into clusters.
Do their properties (mass, shape, star formation rate) preserve traces of the large-scale cosmic flows from which they originated? Find out this Thursday with Katarina Kraljic, a researcher at the @ObsStrasbourg , who studied a sample of observed and virtual galaxies : https://www.irap.omp.eu/event/the-co-evolution-of-galaxies-and-the-cosmic-web-over-cosmic-time/
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#Gravitational #microlensing has emerged as a transformative tool. It is an observational phenomenon predicted by General Relativity, wherein the gravitational field of a foreground object (the lens) bends and magnifies the light of a distant background star (the source).
#WhatIs #Astrophysics #Astronomy #sflorg
https://www.sflorg.com/2025/12/wi12142501.html -
#Abell209 is a massive #Galaxy #Cluster located in the constellation Cetus, approximately 2.8 to 3 billion light-years from Earth.
The cluster contains over 100 galaxies and its immense mass warps spacetime, allowing astronomers to study dark matter through a phenomenon called #Gravitational #Lensing.
https://knowledgezone.co.in/posts/Abell-209-and-Spacetime-Warping-69160164eeb3621d436d25de
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(26 Sep) Daylight Savings Time Is So Bad, It’s Messing With Our View of the Cosmos
And it’s not clear if anything can be done about the problem.
https://s.faithcollapsing.com/w9k72
Archive: ia: https://s.faithcollapsing.com/06g9x#gravitational-wave #ligo #radio-astronomy #space-&-spaceflight
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@kojoidrissa so #obvious but yet so #illusive. #life has a #gravitational #force. Allowing #yourself to be #passive is too often the #default #disposition.
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HerS 020941.1+001557 is the designation for a very distant galaxy that appears as a dramatic #Einstein #Ring due to a phenomenon called #Gravitational #Lensing.
Its light, emitted 11 billion years ago, has been bent and magnified by the gravitational field of a closer, massive elliptical galaxy (SDSS J020941.27+001558.4) located between HerS 020941.1+001557 and Earth.
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SciTech Chronicles. . . . . .May 17th, 2025
#volcanoes #Io #collision #gravitational #AMOC #dilution #mass #expansion #sediment #cooling #ice-sheet #AMOC #Negev #pendants #child #"Tel Malḥata" #SAR #Magellan #metamorphism #subduction
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SciTech Chronicles. . . . . .May 17th, 2025
#volcanoes #Io #collision #gravitational #AMOC #dilution #mass #expansion #sediment #cooling #ice-sheet #AMOC #Negev #pendants #child #"Tel Malḥata" #SAR #Magellan #metamorphism #subduction
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An exciting first meeting of the Special Interest Group for #TimeandFrequency took place at the University of Amsterdam, focusing on #metrology and the #science of accurate #time.
SIG-TFN looked into some challenging use cases from redefining the System of Units (SI), detecting #gravitational waves, testing new #physics and supporting European-wide commercial #services such as very accurate time stamps for banks to validate high-frequency trading.
Find out more
👉 https://connect.geant.org/2024/10/30/sig-tfn-meet-for-the-first-time -
…❛❛ John Archibald Wheeler was a physicist’s #physicist. He never won a #NobelPrize, never became a household name, but to those in the know, he was a legend. He broke ground in many areas of #physics: #particle, #nuclear, #gravitational, #quantum. He studied under #NielsBohr, walked and talked with #AlbertEinstein ❜❜…
🔗 https://www.quantamagazine.org/john-wheeler-saw-the-tear-in-reality-20240925/ 25 Sep 2024
🔗 https://kolektiva.social/@LevZadov/113290877708668122 11 Oct 2024
🔗 https://en.wikipedia.org/wiki/John_Archibald_Wheeler#Community #TimeTravel #Research #Wheeler #wormhole #KrononautMoon
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…❛❛ John Archibald Wheeler was a physicist’s #physicist. He never won a #NobelPrize, never became a household name, but to those in the know, he was a legend. He broke ground in many areas of #physics: #particle, #nuclear, #gravitational, #quantum. He studied under #NielsBohr, walked and talked with #AlbertEinstein ❜❜…
🔗 https://www.quantamagazine.org/john-wheeler-saw-the-tear-in-reality-20240925/ 25 Sep 2024
🔗 https://kolektiva.social/@LevZadov/113290877708668122 11 Oct 2024
🔗 https://en.wikipedia.org/wiki/John_Archibald_Wheeler#Community #TimeTravel #Research #Wheeler #wormhole #KrononautMoon
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…❛❛ John Archibald Wheeler was a physicist’s #physicist. He never won a #NobelPrize, never became a household name, but to those in the know, he was a legend. He broke ground in many areas of #physics: #particle, #nuclear, #gravitational, #quantum. He studied under #NielsBohr, walked and talked with #AlbertEinstein ❜❜…
🔗 https://www.quantamagazine.org/john-wheeler-saw-the-tear-in-reality-20240925/ 25 Sep 2024
🔗 https://kolektiva.social/@LevZadov/113290877708668122 11 Oct 2024
🔗 https://en.wikipedia.org/wiki/John_Archibald_Wheeler#Community #TimeTravel #Research #Wheeler #wormhole #KrononautMoon
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#DidYouKnow: #Gravitational #Lensing occurs when a massive celestial body - such as a galaxy cluster - causes a sufficient curvature of spacetime for the path of light around it to be visibly bent, as if by a lens.
The body causing the light to curve is accordingly called a gravitational lens.
https://knowledgezone.co.in/trends/explorer?topic=Gravitational-Lens
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#Gravitational waves from giant #BlackHole collision reveal long-sought ‘ringing’ : Nature
Don’t Fall for Big Oil’s #CarbonCapture #Deceptions : Sci Am
The True Nature of #Logarithms : Medium
Check our latest #KnowledgeLinks
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The same equipment used for #interplanetary communications 📶 could allow pairs of stellar #gravitational lenses to facilitate energy transmission over #interstellar 🌌 distances. https://phys.org/news/2023-11-civilizations-gravitational-lenses-transmit-power.html
#InternetSociety #Interplanetary chapter : "Especially as #commercialization of #space progresses, the need for a #SpaceInternet 📡 that is open, trusted and trustworthy are challenges that must be addressed" https://www.ipnsig.org
#Galactic Internet made possible by star gravitational lensing https://www.sciencedirect.com/science/article/abs/pii/S0094576512002780
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Gravitational waves produce a background hum across the whole universe |
The fabric of the universe is constantly rippling, according to astronomers who have discovered a background buzz of #gravitational #waves. These waves may be produced by #supermassive #black #holes merging across the universe, but they might also have more exotic origins, such as leftover ripples in space-time created shortly after the #big #bang.
Pinning down their true nature could tell us about how supermassive black holes grow and affect their host galaxies, or even about how the universe evolved in its first moments.
To find this mysterious hum, astronomers have been tracking rapidly rotating neutron stars called #pulsars that blast out light with extreme regularity. By looking at different pulsars across the Milky Way, astronomers can effectively use them as a galaxy-sized gravitational-wave #detector called a pulsar #timing #array.
While individual gravitational waves, which are ripples in space-time created by massive objects colliding, have been seen regularly since the first detection in 2015, the object of this search is different. Those previous gravitational waves all have a #localised origin and rise and fall hundreds of times a second, but the newly-discovered signal is more like a gravitational wave #background that would permeate the entire universe at much #lower #frequencies, similar in concept to the cosmic microwave background, which is radiation left over by the big bang and seen all over the universe today.
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#TopicOfTheDay: #Gravitational #Lensing occurs when a massive celestial body — such as a galaxy cluster — causes a sufficient curvature of spacetime for the path of light around it to be visibly bent, as if by a lens.
The body causing the light to curve is accordingly called a gravitational lens.
https://knowledgezone.co.in/trends/explorer?topic=Gravitational-Lens
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#Congratulations to my student, David Specht, now Dr David Specht, following his #PhDViva today. David's #thesis included the development of the most accurate and best tested model of #gravitational #microlensing in our #Galaxy, as well as modelling of the first #discovery from #space of an #exoplanet detected by the microlensing effect. I'm one proud #supervisor.
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#Cosmological observations of the orbits of #stars and #galaxies enable clear conclusions to be drawn about the attractive #gravitational forces that act between the #celestial bodies.
#DarkMatter #Physics #sflorg
https://www.sflorg.com/2022/11/phy11102201.html -
> The #Laser #Interferometer Gravitational-Wave Observatory (LIGO) is a huge installation measured in kilometers that is listening for wrinkles in space-time.
> Gravity causes #space-time to stretch — think back to the diagrams you’ve seen of a massive orb (a star or planet) sitting on a plane with grid lines drawn on it, the fabric of that plane being stretch downward from the mass of the orb. If you have two massive entities like black holes orbiting each other, they give off #gravitational #waves. When they collide and merge, they create a brief but very strong train of waves. Evidence of these events are what #LIGO is looking for.
