Big Rip vs Big Crunch vs Big Freeze Which The Most Possible

this is the Big Bang the beginning of all events that occur in the universe since the universe was born 13.8 billion years ago the universe has expanded as far as 90 3 billion light years or what is commonly called the observable universe then how will our universe fulfill its ultimate destiny will our universe stop expanding at some point in the distant future then turn toward us or will the universe continue to expand until it reaches its maximum where All That Remains is infinite empty space we will soon find the answer to know the ultimate fate of the universe we must know the shape or geometry of the universe to know the shape or geometry of the universe we have to know the total density of the universe the total density of the universe is measured by a cosmological parameter called Omega Omega is the ratio between the actual density of the universe and the critical density of the universe Omega is indispensable for determining the shape and geometry of the universe the first is flat geometry and flat geometry the path lines of particles and light move parallel in a straight line as in ordinary euclidean space flat geometry shows that the sum of energy and matter in the universe is balanced at a critical density so that the Omega value is equal to or close to one causing the expansion of the universe to continue at a constant rate or to slow down slowly the second is open Geometry in open Geometry The Path lines of particles and light tend to bend outward open Geometry shows that the total density of the universe is lower than the critical density so that the Omega value is less than one in this scenario the universe would continue to expand faster and faster with time until gravity was unable to stop its expansion and the last one is closed geometry in a closed geometry the path lines of particles and light tend to bend inward closed geometry indicates that the total density of the universe is higher than the critical density so that the Omega value is greater than one in this scenario the universe would reach a high point in expansion and then contract again in the Big Crunch during which the universe contracted and compressed then how do we know the total density of the universe to calculate the total density of the universe we need to know the actual density of the universe and the critical density of the universe in cosmological terms actual density is often measured as the total density of all existing forms of matter and energy including baryonic matter dark matter and dark energy the actual density of the universe may vary over time due to the effects of the expansion of the universe and changes in the number and types of matter and energy components within it the understanding of the actual density of the universe is very important in the study of cosmology because it influences the evolution and structure of the universe to measure the actual density of the universe scientists use various methods and approaches one of the main methods is through the analysis of astronomical observations such as measurements of the redshift of galaxies observations of cosmic structures such as Galaxy clusters and observations of the cosmic background radiation another method involves using cosmological models and mathematical calculations that incorporate physical equations such as the Friedman equations in the general theory of relativity the value for the actual density obtained from observations and calculations by scientists is about 9.8 times 10 to the power of minus 27 kilograms per meter cubic while the value for the critical density is obtained through calculation within a cosmological framework the critical density can be related to the Hubble constant and the gravitational constant the Hubble constant describes the current rate of expansion of the universe while the gravitational constant is a constant related to the gravitational force between masses in the universe in general the critical density can be written as follows each is Hubble constant with currently value is 67.4 kilometers per second per Mega per sec and GE is gravitational constant that has a fixed value is 6.60 7 times 10 to the power of minus 11 newton meters square per kilogram Square note that the values of the Hubble constant can vary depending on the units used and the cosmological assumptions applied in the calculations using the exact values of the Hubble constant and the gravitational constant scientists can calculate the critical density of the universe the calculations show that the critical density of the universe is 9.47 times 10 to the power of minus 27 kilometers per cubic meter after knowing the total density and critical density of the universe we can calculate the Omega or the ratio between the total density and the critical density of the universe we will get the value for Omega is 1.03 so it can be concluded that the geometry of the universe tends to be flat consequence of a universe having a flat geometry is that it will continue to expand at a constant or slow rate if the universe continued to expand at a constant or slow rate but not reach a significant acceleration a big freeze could occur in this scenario the energy in the universe would expand evenly and the temperature would gradually drop towards absolute zero All Stars will die and there will be no source of energy left to support life or thermodynamic processes the universe would be cold and thermally inactive in cosmology the relationship between the ratio of the actual density and the critical density or what is commonly called the total density Omega and the geometry of the universe and the ultimate fate of the universe are very closely related if the total density is equal to 1 then the universe has a flat geometry which means that the ultimate fate of the universe is a big freeze if the total density of the universe is less than one then the universe has an open Geometry which means that the final fate of the universe is a big rip if the total density of the universe is greater than one then the universe will have a closed geometry which means that the final fate of the universe is a big crunch but what needs to be remembered is that the Universe has a total density that varies this is due to several factors one of which is dark energy which keeps the universe expanding and makes the space in the universe wider however the thing to remember is that the end of the universe is still being debated among scientists so what we discussed earlier is still a possibility it could happen or not depending on the total mass and energy in the universe so do you have an alternative Theory to explain the ultimate fate of the universe write in the comments column below