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dark matter Articles | Developments Today

Asteroid-mass primordial black holes (PBH), though hypothetical, are a candidate to be dark matter, or at least a portion of it. New research says that if they're real, they could trigger Type Ia supernovae when they pass through stars. This would leave an observable signature. Image Credit: Zdeněk Bardon / ESO

Study links primordial black holes to Type Ia supernova triggers

Researchers propose that asteroid-mass primordial black holes could trigger Type Ia supernovae in white dwarfs.
The mechanism relies on tidal heating that can start runaway nuclear burning inside the star.
Astronomers may be able to test the idea through supernova remnants and galactic chemical signatures.

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DT Editorial Team·Jul 31, 2026·via universetoday.com

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![The full trail of galaxies, with an inset image of DF9 taken by the Hubble Space Telescope. Credit: Keim et al. (2026)/DECaLS/HST](/article_images/YN_DF9-drak-galaxy_20260630_213201.jpg) *The full trail of galaxies, with an inset image of DF9 taken by the Hubble Space Telescope. Credit: Keim et al. (2026)/DECaLS/HST* (via universetoday.com)

Astronomers find another galaxy that appears to lack dark matter

DF9 appears to be the third galaxy in a 12-galaxy string that lacks dark matter.
Researchers say the pattern may support the idea that violent collisions can separate visible and dark matter.
The finding adds pressure to refine how astronomers model unusual dwarf galaxy formation.

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DT Editorial Team·Jul 29, 2026·via livescience.com

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Andromeda XXXVI (And 36) is shown in red in this image. It's one of many dwarf galaxies found around Andromeda, or M31, in the center of the image. And 36 is about 12.5 billion years old and is about 390,000 light years away from Andromeda. Image Credit: Sakowska et al. 2026. A&amp;A.

New Ultra-Faint Dwarf Galaxy Andromeda XXXVI Discovered Orbiting M31

Andromeda XXXVI is a newly discovered ultra-faint dwarf galaxy orbiting Andromeda.
Only 46 stars have been detected, making it extremely dim and low-mass.
It is about 12.5 billion years old and located 390,000 light-years from M31.
UFDGs are the most dark matter-dominated objects known.

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DT Editorial Team·Jul 6, 2026·via universetoday.com

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![The full trail of galaxies, with an inset image of DF9 taken by the Hubble Space Telescope. Credit: Keim et al. (2026)/DECaLS/HST](/article_images/YN_DF9-drak-galaxy_20260630_213201.jpg) *The full trail of galaxies, with an inset image of DF9 taken by the Hubble Space Telescope. Credit: Keim et al. (2026)/DECaLS/HST*

Third dark-matter-free galaxy adds to astronomy puzzle

Astronomers report DF9 as the third known galaxy that appears to lack dark matter.
DF9 sits alongside DF2 and DF4 in a linear structure of seven galaxies about 45 million light-years away.
The galaxy’s estimated mass is consistent with visible matter alone, based on stellar motions.
The finding supports the idea that some galaxies may form through an extreme collision-driven process.

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DT Editorial Team·Jul 1, 2026·via universetoday.com

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This is a 1.7 gigapixel image of stars in the constellation Lupus from the VRO and its LSST Camera. This is the largest digital camera in the world, and with it, the VRO can capture wide images of the sky in extreme detail. The VRO's long-awaited 10-year survey of the sky has now begun. Image Credit: NSF–DOE Vera C. Rubin Observatory/NOIRLab/SLAC/AURA

Vera Rubin Observatory begins decade-long LSST sky survey

The Vera Rubin Observatory has started the 10-year Legacy Survey of Space and Time.
The survey will repeatedly image the southern sky, looking for objects that change brightness, position, or both.
Researchers can receive nightly automated alerts, enabling rapid follow-up observations by other telescopes.

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DT Editorial Team·Jul 1, 2026·via universetoday.com

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This NASA Hubble Space Telescope image features a swarm of galaxies in the galaxy cluster called CL0016+1609 or MACS J0018.5+1626. Credit: NASA/ESA/STScI/H. Ebeling/D. Coe/G. Kober

Hubble and Chandra Reveal a Cluster Collision in Deep Space

Hubble and Chandra observations show CL0016+1609 is two clusters merging along our line of sight.
Researchers are using gravitational lensing to measure the cluster’s dark matter distribution.
The image also includes RELICS data, underscoring the cluster’s value for studying distant galaxies.

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DT Editorial Team·Jun 29, 2026·via universetoday.com

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Image of the Gamma Ray Sky according to the Fermi Large Area Telescope. Credit - NASA/DOE/Fermi LAT Collaboration

Gamma-Ray Background Study Tightens the Case Against Asteroid-Mass Primordial Black Holes

Researchers modeled the gamma-ray signature expected from asteroid-mass primordial black holes.
The analysis compares that prediction with the diffuse extragalactic gamma-ray background.
The reported result narrows the case for this mass range as a dark matter candidate.

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DT Editorial Team·Jun 22, 2026·via universetoday.com

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A section of the COSMOS-Web map, zoom x4. Credit: COSMOS-Web Collaboration.

JWST map traces the cosmic web back toward the universe’s first billion years

Researchers used JWST data to create a highly detailed map of the cosmic web.
The map traces structure back to around 1 billion years after the Big Bang.
COSMOS-Web is the largest of Webb’s Cycle 1 General Observation programs.

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DT Editorial Team·Jun 5, 2026·via universetoday.com

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Gravitational lens reveals the presence of dark matter (Credit : ESA/Hubble)

Scientists Propose a New Way to Hunt Dark Matter in Gravitational Waves

An MIT-led team modeled how ultralight dark matter could alter gravitational waves from black hole mergers.
The mechanism relies on superradiance building dense dark matter clouds around spinning black holes.
Researchers screened 28 public LIGO, Virgo, and KAGRA signals and found one event that differed from vacuum-merger expectations.

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DT Editorial Team·May 16, 2026·via universetoday.com

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A simulation of the formation of dark matter structures from the early universe until today. Credit: Ralf Kaehler/SLAC National Accelerator Laboratory/American Museum of Natural History

New dark matter model aims to connect three long-standing cosmic puzzles

A UC Riverside-led study proposes self-interacting dark matter as a common explanation for three anomalies.
The model focuses on dense compact cores created through gravothermal collapse.
The idea could connect observations from gravitational lenses, stellar streams, and satellite systems.

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DT Editorial Team·May 16, 2026·via universetoday.com

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Not Even the Largest Cosmic Objects Can Escape Newton and Einstein, Study Finds

A gravity test at cosmic scale adds weight to the dark matter picture

The article says a large new study found cosmic-scale observations remain consistent with standard gravity.
That weakens explanations based solely on modifying gravity at large scales.
The result strengthens the indirect case for dark matter without directly detecting it.

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DT Editorial Team·Apr 18, 2026·via gizmodo.com

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Self-Interacting Dark Matter Study Tries to Unite Three Cosmic Anomalies

A UC Riverside-led study was published in Physical Review Letters.
The paper argues that self-interacting dark matter could explain three astrophysical puzzles.
The significance is the possibility of one framework spanning multiple cosmic environments.

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DT Editorial Team·Apr 14, 2026·via phys.org

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A Dark Matter Study Suggests That Missing Signals May Be Part of the Message

A new JCAP study explores the possibility that dark matter comes in two states.
The work argues that a lack of detection may itself carry useful information.
The proposal aims to reshape how dark matter searches are interpreted.

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DT Editorial Team·Apr 9, 2026·via phys.org

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Image of the NGC 1052-DF2 Ultra Diffuse Galaxy that started the chain of discoveries of galaxies lacking dark matter. Credit - NASA, ESA, and P. van Dokkum (Yale)

Astronomers report a third galaxy that appears to lack dark matter

Astronomers report a third galaxy that appears to be missing dark matter.
The finding supports the controversial ‘Bullet Dwarf’ collision scenario.
Such galaxies are important tests for dark matter and modified gravity theories.

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DT Editorial Team·Apr 8, 2026·via universetoday.com

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University of Minnesota researchers are working on the design of the low-background shield, which creates a zone free of trace radioactivity that could overwhelm the faint dark matter signal. Credit: Greg Stewart/SLAC National Accelerator Laboratory

SuperCDMS Reaches Operating Temperature in Major Step Toward Dark Matter Detection

SuperCDMS has reached its base operating temperature at SNOLAB.
The detectors now can explore a new region of parameter space for light dark matter particles.
The experiment relies on deep underground placement and ultra-pure lead shielding to suppress background radiation.

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DT Editorial Team·Apr 8, 2026·via universetoday.com

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An artist’s impression of streams of stars around a galaxy. The galaxy occupies most of the image as a fuzzy blue-white oval with spiral features extending out clockwise. The light clouds are interspersed with small dark brown splotches in the same spiral pattern around the center, representing dust clouds. The galaxy’s center is a bright yellow glow. Overlaid on top of and surrounding the galaxy are several criss-crossing, faint tendrils of stars that represent satellite dwarf galaxies and star clusters that have been stretched out into long thin lines. The tendrils have various lengths and widths, though all are arcs rather than complete circles. The background is black.

Milky Way Study Uncovers Dozens of Hidden Stellar Streams

Researchers used Gaia data and a new algorithm to identify dozens of faint stellar-stream candidates.
The reported method more than quadruples the number of known candidates.
The findings could help explain both Milky Way evolution and dark matter distribution.

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DT Editorial Team·Apr 5, 2026·via space.com

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A researcher sits at a keyboard at a workstation illuminated by a single light in a darkened lab facility. To the right is a large piece of complex machinery featuring stacked rings of gold-colored metal components and intricate circuitry.

Particle Physics Labs Turn the Camera Around in a Global Photowalk Showcase

The 2025 Global Physics Photowalk featured entries from 16 particle physics laboratories worldwide.
The winning image was taken at INFN’s COLD lab in Frascati, Italy, showing a researcher beside a cryostat used in dark matter searches.
The contest offers a rare public-facing look at the infrastructure and people behind frontier physics.

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DT Editorial Team·Apr 1, 2026·via quantamagazine.org

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NASA’s Hubble spots nearly invisible “ghost galaxy” made of 99% dark matter

NASA's Hubble Spots Nearly Invisible Ghost Galaxy Made of 99 Percent Dark Matter

CDG-2 is 300 million light-years away and composed of approximately 99% dark matter
Detected by searching for grouped globular clusters rather than starlight — a novel technique
Four globular clusters account for 16% of all visible light in the entire galaxy
Hydrogen gas was likely stripped by gravitational interactions in the dense Perseus cluster
Discovery suggests many more invisible dark-matter-dominated galaxies may be hiding in plain sight

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DT Editorial Team·Feb 21, 2026·6 min read·via sciencedaily.com

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