If space exists, what is it?
This is the single most important question in modern physics. Einstein himself said that so far as his general relativity is concerned, space ( actually space-time) and the gravitational field are the SAME THINGS. We see it as something that is empty because, in modern language, we cannot see the quantum particles called gravitons out of which it is 'manufactured'.
From the point of view of cosmology based on the Friedmann equation, there is a solutions for this:keepitmoving said:isn`t it a fact that space expands in the absence of gravity?
Space expansion refers to the idea that the universe is constantly growing and stretching, causing the distances between objects in space to increase over time.
There is a common misconception that gravity is the cause of space expansion. While gravity does play a role in the movement of objects in space, it is not responsible for the expansion of the universe. In fact, space expansion is driven by a mysterious force known as dark energy.
No, gravity cannot overcome the expansion of space. In fact, the expansion of the universe is accelerating, which means that the force of dark energy is actually getting stronger over time.
Scientists study space expansion through a variety of methods, including measuring the distances between objects in space and observing the movement of galaxies. They also use mathematical models and simulations to understand the dynamics of the expanding universe.
It is currently believed that the expansion of space will continue indefinitely. However, this is still an area of ongoing research and new discoveries may change our understanding in the future.