- #1
Hyperreality
- 202
- 0
Does the expansion of universe dependent on both energy and mass, and does the speed of the expansion change the energy to mass ratio of the universe?
Originally posted by Hyperreality
Does the expansion of universe dependent on both energy and mass,
The famous equation E=mc², proposed by Einstein, states that energy and mass are interchangeable and can be converted into one another. This means that mass can be converted into energy and vice versa.
The expansion of the universe does not directly affect energy and mass. However, as the universe expands, the distance between objects increases, leading to a decrease in the density of matter and energy. This means that the energy and mass per unit volume of the universe become smaller over time.
Dark energy is a hypothetical form of energy that is believed to make up about 70% of the total energy in the universe. It is responsible for the accelerating expansion of the universe, as it exerts a repulsive force that counteracts the attractive force of gravity.
The shape of the universe is determined by its overall mass and energy density. As the universe expands, the density decreases, and depending on the amount and distribution of mass and energy, the shape of the universe can be flat, open, or closed.
The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another. Similarly, the law of conservation of mass states that mass cannot be created or destroyed, only rearranged or transformed into energy. Therefore, energy and mass cannot be created or destroyed in the universe, only converted into different forms.