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Development history of the universe is being rewritten based on a bachelor’s project from NBI

A team of researchers has observed a massive galaxy cluster that challenges existing models of the universe's evolution. The cluster's unusual structure and high density of cold, neutral hydrogen gas suggest a different history than previously thought. This discovery raises questions about the fate of large structures in the universe.

SourceUniversity of Copenhagen·JournalNature Astronomy·DateJan 9, 2026

Mapping the Universe, faster and with the same accuracy

Researchers have developed an emulator called Effort.jl that mimics the behavior of large-scale structure models, allowing for fast analysis on standard laptops. The new model delivers similar accuracy as the original, enabling scientists to analyze upcoming data releases from experiments like DESI and Euclid.

SourceSissa Medialab·JournalJournal of Cosmology and Astroparticle Physics·TypeData/statistical analysis·DateSep 16, 2025

Dark matter formed when fast particles slowed down and got heavy, new theory says

Researchers at Dartmouth College propose a new theory on the origin of dark matter, suggesting it could have formed from high-energy massless particles that rapidly condensed into cold, heavy particles. The theory can be tested using existing observational data, including the Cosmic Microwave Background radiation.

SourceDartmouth College·JournalPhysical Review Letters·TypeComputational simulation/modeling·DateMay 14, 2025

Biggest ever supercomputer simulation to investigate Universe’s evolution

Researchers have carried out the largest ever computer simulations to investigate the Universe's evolution, taking into account ordinary matter and dark energy. The FLAMINGO simulations provide a detailed picture of virtual galaxies and galaxy clusters, allowing for comparisons with observations from new high-powered telescopes.

SourceDurham University·JournalMonthly Notices of the Royal Astronomical Society·TypeComputational simulation/modeling·DateOct 24, 2023

Mapping the local cosmic web

Researchers have created a new map of dark matter in the local universe using machine learning, revealing previously undiscovered filamentary structures connecting galaxies. The map provides a detailed understanding of the distribution of dark matter and its gravitational influence on galaxies.

Slime mold simulations used to map dark matter holding universe together

Researchers have successfully mapped the cosmic web's filamentary structure using a slime mold-inspired algorithm, providing insights into dark matter's role in shaping the universe. The study revealed that denser regions of intergalactic gas are organized into filaments that stretch over 10 million light-years from galaxies.

SourceNASA/Goddard Space Flight Center·JournalThe Astrophysical Journal Letters·DateMar 10, 2020

Spiraling filaments feed young galaxies

A new study using the Keck Cosmic Web Imager has provided the clearest evidence yet that filaments of cool gas spiral into young galaxies, explaining how they can make stars on fast timescales. The observations suggest a cold-flow model of galaxy formation, where cool gas flows directly into forming galaxies and is converted into stars.

SourceCalifornia Institute of Technology·JournalNature Astronomy·DateJul 1, 2019