Dark Matter

The universe is laden with mystery and wonder; there is no shortage of questions to be asked about the nature of the cosmos. The questions that civilization asks about the universe reflect societies values, such as asking the question of how the universe will ultimately die. The answer to this question begins with one of the fundamental forces of the universe, gravity. If a football is thrown gravity acts on the ball as soon as it leaves the hand of the quarterback, the football starts losing speed and reaches its peak height after returning back to earth because the force at which the ball was thrown was not enough to break through earths gravitational pull. This idea was also applied to the expansion of our universe. During inflation (expansion
There is much more dark matter than normal (visible) matter in the universe. According to (this source) roughly 68% of the universe is dark energy. Dark matter makes up about 27%, while everything else in the universe (physical matter like the atoms that make up planets and stars) makes up less than 5% of the universe. According to (this source) the universe is actually 96% of dark matter and dark energy. With 73% being dark energy and 23% being dark matter but the implications of this much larger amount of dark matter could be an increase of its effect on the universe. However absolutely no scientist knows for sure what dark matter is. What could dark matter be? Many physicists and astronomers think dark matter is probably a new particle that so far has eluded detection during particle accelerator experiments or discovery among cosmic rays. In order for a new particle to behave as dark matter, it must be heavy (probably heavier than a neutron) and weakly interacting with normal matter so that it does not easily lead to light-producing reactions. Regardless of which model of physics that is being hypothesized, all of them have a hole which dark matter
Mathematical theories indicate that the mass of the Milky Way disk galaxy is at least 50% unseen mass or material. The Dark halo of mass surrounding the Milky Way supports the velocity of the galaxies spin as well as keeps it in shape. The discrepancy in the spiral of galaxies is that they do not have enough mass (even at their centers) to keep the millions of solar systems withheld in its gradational field. So physicists had a problem. What was the explanation for the velocity and rotational curve in galaxies? Observations indicate halos of dark matter surround most, if not all, galaxies. This theory would make sense of the current model of physics. Dark matter originates from our efforts to explain the observed mismatch between the gravitational mass and the luminous mass of galaxies and clusters of galaxies. The gravitational mass of an object is determined by measuring the velocity and radius of the orbits of its satellites, just as we can measure the mass of the sun using the velocity and radial distance of its planets. What could be the invisible mass hiding in the galactic