matter

Dark horses in the cosmos

How primordial black holes might explain dark matter | Aeon Essays

The Universe began as a strange sort of soup. Large galaxies hadn’t yet formed, and flying particles were hotter than the centres of stars in the Universe today. Of these, tiny particles known as quarks clumped together to form the building blocks of atoms: neutrons, protons and electrons. Later, through a process called cosmic inflation, …

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AP Top 25 Preseason College Football Poll: 5 Things That Matter, Overrated, Underrated, Winners, Losers 2022

The 2022 AP top 25 preseason college football poll was released. Here are the topics that matter with the overrated and underrated teams, and the winners and losers. CFN Predictions of Every GameACC | Big Ten | Big 12 | Pac-12 | SECAAC | C-USA | Ind | MAC | M-West | Sun BeltCFN Preview 2021: …

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Matter at extreme conditions of very high temperature and pressure turns out to be remarkably simple and universal

Credit: Pixabay/CC0 Public Domain Scientists at Queen Mary University of London have made two discoveries about the behavior of “supercritical matter”—matter at the critical point where the differences between liquids and gases seemingly disappear. While the behavior of matter at reasonably low temperature and pressure was well understood, the picture of matter at high temperature …

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Fast Radio Bursts Piercing Gaseous Halos Around Galaxies

Powerful Radio Pulses Originating Deep in the Cosmos Probe Hidden Matter Around Galaxies

This artist’s concept shows distant fast radio bursts piercing the gaseous halos around galaxies in the local universe. The radio bursts are depicted traveling from the distant cosmos, through the galactic halos, and finally reaching telescopes on Earth. The bumps seen in two of the lines represent the radio burst themselves as they travel toward …

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Dark matter: An invisible glue that may not even exist | DW | 09.08.2022

It has never been detected, only speculated. But scientists estimate that up to 85% of the matter in the universe could be made of what’s called dark matter. Scientists cannot define dark matter with any certainty, but that hasn’t stopped the search for it. Our largest and newest space-based telescope, the James Webb Space Telescope is …

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These Dwarf Galaxies Seem to Be Devoid of Dark Matter, And It Doesn’t Make Sense

Ask astronomers about dark matter and one of the things they talk about is that this invisible, mysterious ‘stuff’ permeates the universe. In particular, it exists in halos surrounding most galaxies.   The mass of the halo exerts a strong gravitational influence on the galaxy itself, as well as on others in the neighborhood. That’s …

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Scientists Find Evidence of Oldest Dark Matter in Universe

Researchers say they have discovered evidence of the oldest dark matter ever observed in the universe. Dark matter remains mysterious. Scientists believe the material makes up more than one quarter of the universe. But it cannot be directly seen or felt. Astronomers have theorized that dark matter exists because of gravity’s observed effects on galaxies. …

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A NASA graphic depicting a galaxy with a red half-circle superimposed over it to represent the mass of dark matter believed to be found there.

The dark matter hypothesis isn’t perfect, but the alternatives are worse

You may not be a fan of dark matter, the hypothetical particle that makes up the bulk of the mass in the universe. And it’s true that the dark matter hypothesis has its shortcomings — and, of course, we haven’t found any dark matter particles yet. But the truth is that the alternatives are much …

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Preview: ‘Red Matter 2’ is Raising the Bar on Quest 2 Graphics & Doubling Down on Interactivity

Due out in just two weeks, Red Matter 2 is promising to up the ante over its already well regarded predecessor, this time being built from the ground up to look as good as possible on Quest 2. We got to sample the game to see how it’s shaping up ahead of release. Developer Vertical …

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