Cold dark matter (CDM) as a research area encompasses theoretical, computational, and observational studies of non-relativistic, weakly interacting matter that dominates the matter density of the Universe and seeds structure formation. Research focuses on modeling CDM’s impact on cosmic microwave background anisotropies, large-scale structure, galaxy and cluster halos, and substructure through N-body simulations and analytic frameworks such as linear perturbation theory and halo models. It also investigates constraints from gravitational lensing, galaxy dynamics, and cosmological surveys, and explores candidate particle properties via indirect astrophysical signatures and their consistency with precision cosmology and alternative dark matter scenarios.
When an invisible entity making up 85% of the universe's mass stumps the greatest scientific minds of our time, awe is an understandable response.
General Physics
Mar 29, 2026
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A team of cosmologists in China has introduced a mathematical framework that investigates two of the deepest mysteries in cosmology at the same time. Publishing their research in The Astrophysical Journal, Yun Chen and colleagues ...
A group of US astronomers may have uncovered the first evidence for a dark matter sub-halo lurking just beyond our stellar neighborhood. Reporting their findings in Physical Review Letters, a team led by Sukanya Chakrabarti ...
Ciaran O'Hare scribbles symbols using colored markers across his whiteboard like he's trying to solve a crime—or perhaps planning one. He bounces around the edges of the board, slowly filling it with sharp angles and curling ...
General Physics
Feb 5, 2026
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Our Milky Way galaxy may not have a supermassive black hole at its center but rather an enormous clump of mysterious dark matter exerting the same gravitational influence, astronomers say. They believe this invisible substance—which ...
Astronomy
Feb 5, 2026
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In 2023, a subatomic particle called a neutrino crashed into Earth with such a high amount of energy that it should have been impossible. In fact, there are no known sources anywhere in the universe capable of producing such ...
Astronomy
Feb 3, 2026
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The mystery of dark matter—unseen, pervasive, and essential in standard cosmology—has loomed over physics for decades. In new research, I explore a different possibility: Rather than postulating new particles, I propose that ...
Dark matter is a mysterious type of matter that does not emit, absorb, or reflect light, yet is predicted to account for most of the universe's mass. While physicists have gathered extensive indirect evidence of its existence, ...
Computer simulations carried out by astronomers from the University of Groningen in collaboration with researchers from Germany, France and Sweden show that most of the (dark) matter beyond the Local Group of galaxies (which ...
Astronomy
Jan 27, 2026
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The Dark Energy Survey Collaboration collected information on hundreds of millions of galaxies across the universe using the U.S. Department of Energy-fabricated Dark Energy Camera, mounted on the U.S. National Science Foundation ...
Astronomy
Jan 22, 2026
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