Dark Matter vs. Dark Energy
Definition of Dark Matter
Dark matter is an unseen force that consists of subatomic particle that cannot be seen or detected, but it exerts a gravitational pull on all the visible matter of the universe. Dark matter is made up of around twenty one percent of the universe. Scientist have studied that dark matter exists due to the fact that the visible matter of our universe does not possess enough gravitational force to hold or align all the galaxies together. Dark matter is necessary for the holding and proper rotation of galaxies in their place or else the galaxies would be falling apart or colliding together and forming clusters. Dark matter is also responsible for creating small fluctuations in the cosmic space back in the early stages of our universe to create such a large scale universe which we see today. Dark matter is completely invisible to light and other electromagnetic radiations making it impossible to be detect and for scientists to research about it with the latest devices. Dark matter could also be responsible for the optical illusions that astronomers have observed.
Definition of Dark Energy
Dark energy is a phenomenon that is completely mysterious but scientists know that it is there because it causes the expansion of the universe. As researched by Albert Einstein that dark energy is not an empty space but it is a space which has its own energy. As this energy is a property of space itself so it does not shrink itself when it causes the universe to expand, in fact as the universe expands more energy or dark energy is created in the space, which as a result will cause the universe to expand faster and faster. Dark matter pushes the gravitational force outwards and shows itself on the universe as a whole. The particles which the dark energy is comprised are yet to be researched by the scientists. Dark matter is made up of seventy four percent of the mass of the universe.