If this is true, then dark energy is the major driving force behind the fate of the universe and it will expand forever exponentially. Approximately 24% of this is in the form of a low pressure matter, most of which is thought to be non-baryonic dark matter, while the remaining 71% is thought to be in the form of a negative pressure dark energy, like the cosmological constant. There is a growing consensus among cosmologists that the total density of matter is equal to the critical density, so that the universe is spatially flat. If dark energy in fact plays a significant role in the evolution of the universe, then in all likelihood the universe will continue to expand forever. Unlike gravity which works to slow the expansion down, dark energy works to speed the expansion up. This strange form of matter is also sometimes referred to as the dark energy. Recent observations of distant supernova have suggested that the expansion of the universe is actually accelerating or speeding up, like the graph's red curve, which implies the existence of a form of matter with a strong negative pressure, such as the cosmological constant. In this universe, there is sufficient mass in the universe to slow the expansion to a stop, and then eventually reverse it. If the density of the universe is greater than the critical density, then gravity will eventually win and the universe will collapse back on itself, the so called “Big Crunch”, like the graph's orange curve. This is also known as the “Big Chill” or “Big Freeze” because the universe will slowly cool as it expands until eventually it is unable to sustain any life. Gravity might slow the expansion rate down over time, but for densities below the critical density, there isn’t enough gravitational pull from the material to ever stop or reverse the outward expansion. If the density of the universe is less than the critical density, then the universe will expand forever, like the green or blue curves in the graph above. If the pressure of the matter is low, as is the case with most forms of matter we know of, then the fate of the universe is governed by the density. The current rate of expansion is measured by the Hubble Constant, while the strength of gravity depends on the density and pressure of the matter in the universe. The evolution of the universe is determined by a struggle between the momentum of expansion and the pull (or push!) of gravity. Just as Robert Frost imagined two possible fates for the Earth in his poem, cosmologists envision two possible fates for the universe: Sugar, Corn Syrup, Enriched Bleached Flour (Wheat Flour, Barley Malt, Niacin, Reduced Iron, Thiamin Mononitrate, Riboflavin, Folic Acid), Crisp Rice (Rice Flour, Sugar, Whey, Salt, Barley Malt, Wheat Flour, Dextrose), Palm and Palm Kernel Oil, Whole Grain Rolled Oats, Palm and Soybean Oils with TBHQ and Citric Acid to Protect Flavor, Water, Dextrose, Contains 2% 0r Less of Each of the Following: Palm Kernel and Soybean Oils, Soy Flour, Whey, Cocoa, Raisins and/or Raisin Paste, Molasses, Salt Leavening (Baking Soda, Sodium Aluminum Phosphate), Caramel Color, Soy Lecithin, Mono-and Diglycerides, Natural and Artificial Flavors, Eggs, Red 40, High Fructose Corn Syrup Corn Starch, Sorbic Acid (to Preserve Freshness), Citric Acid, Pectin, Egg Whites, Sodium Citrate, Polysorbate 60, Titanium Dioxide, Blue 1, Yellow 5, Turmeric, Annatto Extract, Beta Carotene, Sorbitan Monostearate, Propylene Glycol Monostearate, Sodium Stearoyl Lactylate, Polysorbate 80, Nonfat Dry Milk, Modified Corn Starch, DATEM, Modified Tapioca Starch, Malic Acid, Carrageenan, Spices, Modified Wheat Starch, Chocolate, Cocoa Butter, Cocoa Processed with Alkali.What is the Ultimate Fate of the Universe? Use the RDI’s that are specified for the intended group provided by the Foods represented or purported to be for use by infants,Ĭhildren less than 4 years of age, pregnant women, or lactating women shall ** Percent Daily Values listed below are intended for adults and children ![]() Your daily values may be higher or lower depending on your calorie needs**. * Percent Daily Values are based on a 2,000 calorie diet. (-) Information is currently not available for this nutrient.
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