In this work we investigate the link between galaxy velocity dispersion, mass and other properties (color, morphology) with the properties of dark matter halos by comparing the clustering of galaxies at both fixed mass and velocity dispersion. We use the Sloan Digital Sky Survey to define a ...
The universe is thought to be composed of three components. “Ordinary matter” is what stars, planets, humans and all that’s visible are made from, but this matter only actually accounts for 5% of the universe’s total mass and energy. The remaining 95% is thought to be made up of ...
neutrons and electrons. Scientists only speculate what dark matter is made of. It could be composed of baryons but it could also be non-baryonic, which means consisting of different types of particles.
As such, this mysterious substance must have played an important role in the evolution of the universe. What makes dark matter "invisible"? Everything we see around us on a day-to-day basis is made up of "ordinary" matter, known as baryonic matter, meaning it's composed of baryons (...
In fact, normal, or baryonic, matter (essentially anything with protons and neutrons) seems to account for just 15 per cent of all the mass in the universe. The rest is composed of something else – something that’s not just dark, but entirely transparent and unaffected by any kind of ...
Using gravitational lensing and computer modeling, they found that simulated dark matter composed of axions aligned more with our working understanding of light and gravity than simulated dark matter composed of WIMPs. This still doesn't guarantee dark matter is made up of axions, though; it just...
Is the Universe Made of Math? The Mathematical Universe Hypothesis What Is the Steady State Theory of the Universe? Examining the Empty Nature of Matter in the Universe Different Types of Stars in the Universe
When it comes to filming, the Galaxy S24 Ultra’s ability to record 8K video on the Rear Camera makes it the go to option for capturing next gen recordings. Take things one step further with 8K Video Snap. The innovative technology enables you to scroll the timeline of your 8K video, ...
So, what’s the ideal TV for you? It's time to choose your next screen, but still not sure? Then let’s change the question. Instead of asking “What is the best TV?”, ask yourself “When does my TV’s performance matter most?” ...
Wikipedia’s value and influence are hard to compute. Its revenues come from charitable grants and donations from its users. “Wikipedia is an example of what I like to call ‘digital dark matter’,” says Shane Greenstein, an economist at Harvard who has studied the site closely. Like paren...