What is dark matter short?

dark matter, a component of the universe whose presence is discerned from its gravitational attraction rather than its luminosity. Dark matter makes up 30.1 percent of the matter-energy composition of the universe; the rest is dark energy (69.4 percent) and “ordinary” visible matter (0.5 percent).

What is darkness matter?

Dark matter is a hypothetical form of matter thought to account for approximately 85\% of the matter in the universe. Most dark matter is thought to be non-baryonic in nature; it may be composed of some as-yet-undiscovered subatomic particles.

What does dark matter mean in a sentence?

dark matter. Unseen matter that may make up more than ninety percent of the universe. As the name implies, dark matter does not interact with light or other electromagnetic radiation, so it cannot be seen directly, but it can be detected by measuring its gravitational effects.

What is dark energy in simple terms?

Dark energy is the name given to the mysterious force that’s causing the rate of expansion of our universe to accelerate over time, rather than to slow down. That’s contrary to what one might expect from a universe that began in a Big Bang.

What could be dark matter?

The label “dark matter” encapsulates our ignorance regarding the nature of most of the matter in the universe. It could be made of weakly interacting massive particles; hypothetical particles like axions; or even dark atoms that do not interact with ordinary matter or light.

What is dark matter called?

Dark matter was initially called “missing matter” because astronomers could not find it by observing the universe in any part of the electromagnetic spectrum. There is no current problem of greater importance to cosmology than that of dark matter.

Where is the dark matter?

The answer is gravity. Astronomers indirectly detect dark matter through its gravitational influences on stars and galaxies. Wherever normal matter resides, dark matter can be found lurking unseen by its side.

What is dark matter and dark energy?

In short, dark matter slows down the expansion of the universe, while dark energy speeds it up. Dark matter works like an attractive force — a kind of cosmic cement that holds our universe together. This is because dark matter does interact with gravity, but it doesn’t reflect, absorb, or emit light.

How do you get dark matter?

HOW TO UNLOCK THE DARK MATTER CAMO. You will unlock the Dark Matter Camo by getting gold on each weapon that you can use. That means all primary weapons (Assault Rifles, Submachine Guns, Light Machine Guns, Tactical Rifles, and Snipers), and all secondary weapons (Pistols, Launchers, Shotguns, and Melee).

What is dark matter in science?

Dark matter is a hypothetical kind of matter that cannot be seen with telescopes but accounts for most of the matter in the universe. The existence and properties of dark matter are inferred from its gravitational effects on visible matter, radiation, and the large-scale structure of the universe.

What happens when two dark matter particles collide?

When two dark matter particles crash into each other, they might release a gamma ray. The Fermi Telescope could theoretically detect these collisions, which would appear as a burst of a gamma ray in the sky. Because Fermi has not been in space very long, scientists do not yet have enough data to form conclusions.

What percentage of the universe is made up of dark matter?

Dark matter makes up 30.1 percent of the matter -energy composition of the universe; the rest is dark energy (69.4 percent) and “ordinary” visible matter (0.5 percent). Read More on This Topic

What is nonbaryonic dark matter?

The rate at which galaxies and large structures composed of galaxies coalesced from density fluctuations in the early universe indicates that the nonbaryonic dark matter is relatively “ cold,” or “nonrelativisitic,” meaning that the backbones of galaxies and clusters of galaxies are made of heavy, slow-moving particles.