A newly discovered star is so large, bright, and strange that its appearance could be pointing us towards a clump of dark matter in the sky.
International research has found the first evidence of a massive galaxy with no dark matter. The result is a challenge to the current standard model of cosmology.
In a first, the James Webb Space Telescope (JWST) may have glimpsed a rare type of star that astronomers aren’t even sure exists. These “dark stars” might not have been fueled not by nuclear fusion but by the self-annihilation of dark matter.
There could have been two scenarios with the two Big Bangs. The Hot Big Bang, as in the standard picture, creates the hot plasma of visible matter and radiation and the dark matter, however, could have been created in a later, ‘darker’ Big Bang.
One newly discovered dwarf galaxy, FAST J0139+4328, located a mere 94 million light-years away is barely emitting any light at all. The galaxy seems to be made up almost entirely of dark matter.
Researchers found that there’s about six times as much dark matter in the universe as there is regular matter, a finding consistent with previous measurements.
Astronomers completed a 40-hour long observation of an ultra-diffuse dwarf galaxy and discovered no traces of dark matter. Galaxies without hints of dark matter had been previously discovered though these remain rare anomalies.
For the first time, astronomers have just found evidence that some of the largest structures in space - cosmic filaments - rotate, on a scale of hundreds of millions of light-years.
The international team find that rather than the conventional formation scenarios involving 'normal' matter, supermassive black holes could instead form directly from dark matter in high density regions in the centres of galaxies.
Astronomers are studying black holes that could have formed in the early universe, before stars and galaxies were born. Such primordial black holes (PBHs) could account for all or part of dark matter.
U.S. scientists have precisely measured the total amount of matter making up the cosmos, concluding that dark energy accounts for 69 % of the total mass-energy budget with normal and dark matter being 31.5 %.
XENON1T data from 2017-2018 has revealed an unexpected excess of low-energy interactions with the xenon’s electrons, more than the Standard Model of particle physics would predict.
A new model suggests the Milky Way should have an additional 100 or so very faint satellite galaxies awaiting discovery.
Scientists have been gathering a growing well of evidence that our universe may be connected via a vast array of large-scale "structures" that seem to reach out across the cosmos to synchronize the movements of galaxies that are separated by vast distances.
Researchers have clarified one of the mysteries of 2018 in the field of extragalactic astrophysics: the supposed existence of a galaxy without dark matter. New results show that the galaxy is "normal" with dark matter present.
