What Is Dark Matter Made Out Of
Just like dark energy we don t know a whole lot about dark matter.
What is dark matter made out of. The first variety is about 4 5 percent of the universe and is made of the familiar baryons i e protons neutrons and atomic nuclei which also make up the luminous stars and galaxies. Most of this baryonic dark matter is expected to exist in the form of gas in. Dark matter appears to be a form of matter made up of an entirely different class or classes of subatomic particle. Some astronomers speculate that dark matter may be made up of copious numbers of black holes.
Dark matter doesn t emit light. Dark matter is a form of matter thought to account for approximately 85 of the matter in the universe and about a quarter of its total mass energy density or about 2 241 10 27 kg m 3 its presence is implied in a variety of astrophysical observations including gravitational effects that cannot be explained by accepted theories of gravity unless more matter is present than can be seen. Dark matter may be made of baryonic or non baryonic matter. That only leaves a small 5 for all the matter.
Scientists named this stuff dark matter. One of the most promising is called a wimp. The rest of the universe appears to be made of a mysterious invisible substance called dark matter 25 percent and a force that repels gravity known as dark energy 70 percent. Dark matter makes up about 25.
Dark matter may not be made up of the matter we are familiar with at all. It can t be directly observed with any of the existing tools of astronomers. But it seems that 27 of the universe or about one quarter is made up of the strange stuff. To hold the elements of the universe together dark matter must make up approximately 80 percent of the universe.
The rest is dark matter. More is unknown than is known we know how much there is and we know some of its properties. Yet astrophysicists believe it and dark energy make up most of the mass of the cosmos. Two varieties of dark matter have been found to exist.
It may be filled with particles predicted by theory but that scientists have yet to observe. Roughly 70 of the universe is made of dark energy. If the dark matter is made mostly of machos then it is likely that baryonic matter does make up most of the mass of the universe. That s almost all of it.
Other than that dark energy is a mystery but an important one. The matter that makes up dark matter could different. What is dark energy. Because scientists can t see dark matter directly they have found other ways to investigate it.
The rest everything on earth everything ever observed with all of our instruments all normal matter adds up to less than 5.