New Method Uses Gravitational Waves to Improve Measurements of the Universe's Expansion

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#gravitationalwaves #universeexpansion #hubbleconstant

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🌌 Universe expanding faster than expected?!🌍 Cosmologists unite to refine measurements & unlock cosmic mysteries! ✨ #HubbleConstant 🚀

Source: phys.org/news/2026-02-cosmologist...

How fast is the universe expanding? Supernova could provide the answer The image of an extremely rare supernova could solve the mystery of the expansion rate of the universe.

Munich astronomers imaged and modelled an exceptionally rare #supernova that could provide a new, independent way to measure how fast the #universe is expanding: go.tum.de/991366 🌌

#hubbleconstant #cosmicexpansion #cosmology #astrophysics

📷C. Saulder

¿Por qué el universo sigue expandiéndose sin freno? Energía oscura, tensión de Hubble y Euclid y DESI: claves para entender la expansión acelerada del universo, sin mitos, con datos recientes. El universo se expande porque el espacio-tiempo nació ya en...

¿Por qué el universo sigue expandiéndose sin freno? #Universo #Cosmología #EnergíaOscura #MateriaOscura #TensiónDeHubble #HubbleConstant #JamesWebb #Euclid #DESI #Planck #Supernovas #BAO #EspacioTiempo #2defebrero #felizlunes donporque.com/universo-sig...

Is Earth Inside a Cosmic Void? Probably not in the dramatic sense. Evidence suggests our region of the universe may be slightly underdense on very large scales, but not an enormous empty hole, and any such underdensity would change local Hubble constant measurements by only a small amount. It is unlikely to fully solve the Hubble tension, the mismatch between early universe and local expansion rate estimates.

Are we living in a cosmic underdensity—or just seeing quirks in our measurements? Here’s how the Local Bubble, ‘Local Hole,’ and Hubble tension fit together. What’s your take? #CosmicVoid #HubbleConstant #HubbleTension #LocalBubble #LocalHole

A seminar on gravitational wave cosmology at Queen Mary University of London by Professor Tessa Baker from Portsmouth Cosmology.

We had a superb seminar this week by Tessa Baker from Portsmouth Cosmology on #GravitationalWave cosmology. Amazing to see the measurements of the #HubbleConstant and the first detection of the cross-correlation between GW sources and galaxies!

Pixelized galaxy cluster strong lens modeling improves precision of Hubble constant measurement For the first time, an international research team led by the Shanghai Astronomical Observatory (SHAO) of the Chinese Academy of Sciences has demonstrated that applying pixelized strong-lensing modeling on a galaxy cluster scale can significantly improve the precision of the inferred Hubble constant (H0)—a key parameter that describes the expansion rate of the universe.

🤯 Scientists unlock a more precise cosmic expansion rate using galaxy cluster lenses! ✨ A new method refines our understanding of the universe's age. #HubbleConstant

Source: phys.org/news/2025-11-pixelized-g...

3/8
As the universe expands, the farther away a galaxy is, the faster it recedes from us. It's measured by the #HubbleConstant, currently estimated at about 70 km/sec per megaparsec.

Meaning that at a certain distance—about 14 billion light-years—galaxies are receding from us at the speed of light.

Webb telescope helps refine Hubble constant, suggesting resolution to long-standing expansion rate debate For the past decade, scientists have been trying to get to the bottom of what seemed like a major inconsistency in the universe. The universe expands over time, but how fast it's expanding has seemed ...

Does my bum look big in this picture?
No, it's the dust...wait I'll get my Webb!!!
.
#Webb #telescope helps refine #HubbleConstant, suggesting resolution to long-standing #expansion rate debate. #JWST #Hubble #NASA #Universe #Space phys.org/news/2025-05...

Et si la matière noire évoluait avec le temps ? Une nouvelle piste de comprehension de l'Univers Deux chercheurs de l’Université de Cornell proposent qu'une partie de la matière noire aurait un comportement oscillant, elle varierait avec le temps. Cela pourrait expliquer...

www.geo.fr/sciences/et-...
#MatièreNoire #TensionDeHubble #ÉnergieNoire #CornellUniversity #ChampsScalaires #UniversOscillant #ConstanteDeHubble #HubbleTension #DarkMatter #OscillatingDarkMatter #TimeDependentCosmology #HubbleConstant #ModifiedGravity #QuantumCosmology #DarkSector

A new paper (arXiv:2503.13525) suggests a slow cosmic rotation could resolve the #HubbleTension —bridging the gap between early (CMB) & late (supernovae) measurements of the Hubble constant. Inspired by Gödel, it tweaks ΛCDM without breaking physics.
#Cosmology #DarkEnergy #HubbleConstant

techoreon.com/universe-rot...

#cosmology #physics #hubbleconstant #astrophysics

Energy densities offer new path to resolving the Hubble tension Researchers from the University of Waterloo have proposed a new method to measure the Hubble constant that could help resolve one of modern cosmology's pressing puzzles: the Hubble tension.

🤯Cosmologists at Waterloo may unlock the universe's expansion rate mystery! A new method could resolve the Hubble tension & reveal cosmic secrets.✨ #HubbleConstant

Source: phys.org/news/2025-04-energy-dens...

Does the universe behave the same way everywhere? Weak gravitational lensing could provide an answer A study published in the Journal of Cosmology and Astroparticle Physics (JCAP) presents a methodology to test the assumption of cosmic homogeneity and isotropy, known as the Cosmological Principle, by...

#Astronomers #GravitationalLensing
#Astronomy #BigBang #CMB #HubbleConstant #CosmologicalPrinciple #CosmicHomogeneity #CosmicIsotropy #AstroPhysics #LamdaCDM #EuclidSpaceTelescope
phys.org/news/2025-02...

Astronomers find the largest structure in the universe and name it Quipu Is it possible to understand the universe without understanding the largest structures that reside in it? In principle, not likely. In practical terms? Definitely not. Extremely large objects can dist...

#Astronomers find the #LargestStructureInTheUniverse and name it #Quipu
#Astronomy #BigBang #CMB #HubbleConstant #AstroPhysics #LamdaCDM #CosmicLargeScaleStructure-in-X-Rays(CLASSIX)ClusterSurvey #CosmicExpansion
phys.org/news/2025-02...

The #HubbleTension mystery is unfolding right in our cosmic backyard! Is it a hint of new physics or a misunderstanding of the cosmos?

#Space #Cosmology #HubbleConstant #NASA #Astrophysics #Science #HubbleTension #Astronomy #DarkEnergy #BIGBANG

www.thedailyforest.com/space/hubble...

Is our model of the universe wrong? – podcast Madeleine Finlay speaks to Catherine Heymans, the astronomer royal for Scotland and a professor of astrophysics at the University of Edinburgh, to understand why the expansion rate of the universe rem...

Madeleine Finlay speaks to Catherine Heymans, the astronomer royal for Scotland and a professor of astrophysics at the University of Edinburgh on the measurement problem around the Hubble Constant.

#HubbleConstant #expansion #rate

Webb telescope confirms: What we think we know about the universe is very wrong Determining the expansion rate of the universe, the "Hubble constant," shapes our understanding of the cosmos, its age, and its fate.

Webb telescope confirms that what we think we know about the universe is very wrong: Determining the expansion rate of the universe, a number called the "Hubble constant," shapes our entire understanding of the cosmos, its age, and its ultimate fate.

#WebbTelescope #HubbleConstant #EarthDotCom

The Milky Way may reside at the center of a 2 billion light-year wide cosmic void The universe’s rapid expansion challenges current models. Scientists explore the KBC void and alternative theories to solve the mystery.

Even if I don't understand it so well, I love #Cosmology!

#MilkyWay #CosmicVoid #KBCVoid #HubbleTension #HubbleConstant

Webb Researchers Discover Lensed Supernova, Confirm Hubble Tension

Webb Researchers Discover Lensed Supernova, Confirm Hubble Tension

webbtelescope.org/contents/ear...

#Cosmology #JWST #Universe #HubbleConstant #HubbleTension #science #news

in the #arXiv

DESI Peculiar Velocity Survey – Fundamental Plane
by Khaled Said and co-authors
arxiv.org/abs/2408.13842

#Cosmology #galaxies #cosmicflows #astronomy #astrophysics #science #STEM #DESI #FundamentalPlane #HubbleConstant #TullyFisher

Everything you wanted to know about The Hubble Constant Tension

Editors Eleonora Di Valentino, Dillon Brout
link.springer.com/book/10.1007...

#Cosmology #HubbleTension #HubbleConstant #Astronomy #Astrophysics #science #STEM #book

Bulk Flow Motion Detection in the Local Universe with Pantheon+ Type Ia Supernovae

... with a new measurement of the Hubble Constant.

by Maria Lopes, Armando Bernui, Camila Franco, and Felipe Avila
iopscience.iop.org/article/10.3... #openaccess
#cosmology #supernovae #HubbleConstant #astrophysics

Small Magellanic Cloud Cepheids Observed with the Hubble Space... We present photometric measurements of 88 Cepheid variables in the core of the Small Magellanic Cloud (SMC), the first sample obtained with the Hubble Space Telescope (HST) and Wide Field Camera...

Improving the foundation of the cosmic distance ladder and reinforcing the possibility of physics beyond ΛCDM:

Small Magellanic Cloud Cepheids Observed with HST Provide a New Anchor for the SH0ES Distance Ladder
by Louise Breuval and co-authors
arxiv.org/abs/2404.08038

#cosmology #HubbleConstant

Study: Conflicting values for Hubble Constant not due to measurement error Something else is influencing the expansion rate of the Universe.

#Study: Conflicting values for #HubbleConstant not due to measurement error

Something else is influencing the #expansion rate of the #Universe.

arstechnica.com/science/2024...