Dark Matter And Dark Energy

We cannot see or touch much of our UNIVERSE, which most astronomers say is made up of DARK MATTER and DARK ENERGY. In the currently popular COSMIC consistency model, it is believed that 70% of the universe is composed of DARK ENERGY, 25% DARK MATTER, and 5% ordinary matter. Comparing a theoretical model of the universe's composition with a set of cosmological observations, scientists came up with the above composition: ~68% dark energy, ~27% dark matter, ~5% ordinary matter. Using fluctuations in the cosmic microwave background (CMB), astronomers have determined that dark matter makes up about 27 percent of the universe's content in terms of its total contribution to the universe's overall MASS and ENERGY.

Ordinary matter, including all visible stars, planets and galaxies, makes up less than 5% of the total MASS of the UNIVERSE. The rest—everything on Earth, everything that all our instruments have ever observed, all ordinary matter—makes up less than 5% of the universe. OBSERVATIONs show that there is too little visible matter in the universe to meet the 27 percent required for observations. When you add dark matter to this mix, dark matter makes up about 27 percent of our universe, which means that only 5 percent of the universe is made up of energy and matter that we can understand and observe.

About a quarter of the UNIVERSE is made up of dark matter, which emits no discernible energy but exerts a GRAVITATIONAL pull on all visible matter in the universe. While DARK ENERGY only shows up on larger COSMIC SCALEs, DARK MATTER has effects on individual galaxies and the universe as a whole. The presence of any form of dark energy is necessary to reconcile the measured geometry of space with the total amount of matter in the universe. Regardless of the actual nature of dark energy, dark energy must have a strong negative pressure (repulsion), such as radiation pressure in metamaterials, to explain the observed acceleration of cosmic expansion.

Another explanation for dark energy is that it is a new type of fluid or dynamic energy field that fills space by itself, but has the opposite effect on the expansion of the universe than matter and ordinary energy. According to this idea, dark energy is a fifth and previously unknown fundamental type of force called essence, which fills the universe like a liquid. The so-called "DARK ENERGY" is invisible and can be regarded as an inherent property of space-time, rather than ordinary matter (energy stress), and is the source of space-time curvature. The rest of the universe appears to be made up of a mysterious, invisible matter called dark matter (25%) and a gravity-repelling force called dark energy (70%).

Dark energy makes up over 90 percent of the crap in our universes and is perhaps the only thing keeping life as we know it from disappearing into the cosmic asnap or acrunch of the universe itself.

Astronomers infer the existence of dark matter due to its gravitational effect on galaxies, and something even more mysterious due to its antigravity effect as it expands. The physical properties of these two dark phenomena are completely unknown, and the search for missing mass in the observable universe has even led to modifications to Newton and Einstein's theories of gravity (for example, it seems possible that negative mass constitutes a form of dark fluid that can Simultaneously explain two elusive dark phenomena. Thus, the mutually exclusive nature of negative mass is inconsistent with measurements of dark energy, since this mysterious energy does not dilute but maintains a constant density (with o = -1) with the expansion of the observable universe.

Even with the addition of positive mass matter, a universe with a negative cosmological constant would eventually recede due to mysterious dark energy. Pain is a controversial result because the cosmological effect appears to be dark energy causing the observable universe to collapse when negative masses repel each other. Many scientists also point out that the known properties of dark energy are consistent with the cosmological constant, a mathematical patch that Albert Einstein added to his general theory of relativity to align his equations with the concept of a static universe. Some experts believe that a more accurate general relativity treatment of structures that exist at all scales in the real universe could eliminate the need to involve dark energy due to the toy model of concordance cosmology.

If you think about it, maybe it shouldn't be called "normal" matter, since it's a small part of the universe. If we can figure out what another new form of matter really is, no doubt we'll find a clearer name. It's called "dark" because it must necessarily interact very weakly with ordinary matter - just like dark matter - and it's called energy because one of the few things we're sure of is what it does. almost 70% of all energy in the world. Universe. Belivet calls the substance that fills space the quintessence, although there is no concrete evidence of why the quintessence exists, what it is, and how it interacts with the universe.