Tag

Giant Arc

All articles tagged with #giant arc

space16 days ago•14 min saved

Cosmic Duo Tests Cosmology: Giant Arc and Big Ring in Close Proximity

Two gigantic structures—the Giant Arc and the Big Ring—share the same redshift (~9.2 billion light-years) and lie about 12 degrees apart in the sky, inferred from Mg II absorption in quasar spectra rather than direct imaging. If real and physically connected, they challenge the cosmological principle of large-scale homogeneity under Lambda-CDM and would require explanations for such vast, ordered patterns; however, statistics and potential artefacts are debated, and future surveys and simulations will test their persistence and implications for cosmology.

via Space Daily|

#big-ring #cosmological-principle #cosmology

science21 days ago•50 min saved

Cosmic Ring of Galaxies Defies Current Cosmology

Astronomers have identified a colossal, near-perfect ring of galaxies called The Big Ring, about 1.3 billion light-years across, plus the nearby Giant Arc in the same sky region. These structures exceed expected sizes and don’t fit standard formation scenarios, raising questions about the Cosmological Principle and potentially hinting at new physics (e.g., conformal cyclic cosmology or cosmic strings). The findings, led by Alexia Lopez of the University of Central Lancashire and published in the Journal of Cosmology and Astroparticle Physics, warrant more observations to determine their significance and frequency across the universe.

via Yahoo|

#alexia-lopez #cosmological-principle #cosmology

science22 days ago•5 min saved

Gigantic Ring of Galaxies Stuns Cosmologists

Astronomers led by Alexia Lopez report two ultra-large galaxy structures—the 1.3-billion-light-year Big Ring and the nearby Giant Arc—challenging standard cosmology and the Cosmological Principle; they are not BAOs, and could hint at exotic explanations like conformal cyclic cosmology or cosmic strings; light from these structures has traveled about 6.9 billion years, and more such discoveries are needed to understand their origin.

via ScienceAlert|

#big-ring #cosmology #galaxies

science10 months ago•6 min saved

Giant Arc Challenges Cosmological Understanding

A massive 1.3 billion light-year-wide structure called the Big Ring, along with the previously discovered Giant Arc, challenges current cosmological models and the assumption that the universe is uniform on large scales, raising questions about the validity of the cosmological principle.

via IFLScience|

#big-ring #cosmology #giant-arc

astronomy2 years ago•5 min saved

"Unveiling the Enigmatic Ultra-Large Cosmic Structures: A Challenge to Our Universe's Understanding"

The discovery of a second ultra-large structure in the distant universe, known as the Big Ring, challenges conventional cosmological understanding. Spanning 1.3 billion light-years in diameter and located 9.2 billion light-years from Earth, the Big Ring, along with the previously discovered Giant Arc, defies current theories about the distribution of matter in the universe. These findings prompt the consideration of alternative explanations, such as Conformal Cyclic Cosmology and the influence of cosmic strings, while also challenging the Cosmological Principle. The discovery raises significant questions about the nature of the universe and its development.

via Phys.org|

#astronomy #big-ring #cosmology

astronomy2 years ago•3 min saved

"Discovery of Massive Cosmic Ring Challenges Universe Theories"

Scientists at the University of Central Lancashire have discovered a massive ring-shaped structure in space, named the Big Ring, which challenges the cosmological principle and our understanding of the universe. This 1.3 billion light-years wide structure, made up of galaxies and galaxy clusters, is the seventh large structure discovered that contradicts the idea that the cosmos is smooth on the largest scales. The discovery, along with the Giant Arc, suggests a need to rethink current astronomical theories and indicates the presence of an as yet undiscovered factor at play in the evolution of the universe.

via BBC.com|

#astronomy #big-ring #cosmological-principle