The cosmic web as a research area focuses on the large-scale matter distribution in the Universe, characterized by a network of filaments, walls, nodes, and voids formed by gravitational amplification of primordial density fluctuations in dark matter and baryons. This field integrates cosmological simulations, large galaxy redshift surveys, weak gravitational lensing, and Lyα forest tomography to quantify the web’s topology, connectivity, and anisotropic collapse. Key objectives include constraining cosmological parameters, dark matter and dark energy models, galaxy formation and environmental effects, and testing structure-formation theories within the ΛCDM framework or its alternatives through statistical analysis of web morphology and dynamics.
The largest sample of galaxy groups ever detected has been presented by a team of international astronomers using data from the James Webb Space Telescope (JWST) in an area of the sky called COSMOS Web. The study marks a ...
Astronomy
Apr 29, 2025
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On 19 March 2025, the European Space Agency's Euclid mission releases its first batch of survey data, including a preview of its deep fields. Here, hundreds of thousands of galaxies in different shapes and sizes take center ...
Astronomy
Mar 22, 2025
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Gravitational lensing often evokes images of a cosmic funhouse mirror: duplicated galaxies, dramatic arcs and distorted shapes. But the web-like, large-scale structure throughout the universe also bends light in a weaker, ...
Astronomy
Mar 13, 2025
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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 distort our understanding ...
Astronomy
Feb 6, 2025
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Matter in intergalactic space is distributed in a vast network of interconnected filamentary structures, collectively referred to as the cosmic web. With hundreds of hours of observations, an international team of researchers ...
Astronomy
Feb 5, 2025
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Across cosmic history, powerful forces have acted on matter, reshaping the universe into an increasingly complex web of structures. Now, new research led by Joshua Kim and Mathew Madhavacheril at the University of Pennsylvania ...
Astronomy
Jan 23, 2025
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Galaxies are not islands in the cosmos. While globally the universe expands—driven by the mysterious "dark energy"—locally, galaxies cluster through gravitational interactions, forming the cosmic web held together by dark ...
Astronomy
Jan 7, 2025
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How do you weigh one of the largest objects in the entire universe? Very carefully, according to new research.
Astronomy
Nov 21, 2024
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Gravity has shaped our cosmos. Its attractive influence turned tiny differences in the amount of matter present in the early universe into the sprawling strands of galaxies we see today. A new study using data from the Dark ...
Astronomy
Nov 19, 2024
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If you want to pinpoint your place in the universe, start with your cosmic address. You live on Earth->Solar System->Milky Way Galaxy->Local Cluster->Virgo Cluster->Virgo Supercluster->Laniakea. Thanks to new deep sky surveys, ...
Astronomy
Oct 7, 2024
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