Changes

</ref>) but is curved having certain [[curvature of space]] and the time reflects faithfully this [[curvature of space]] through the gravitational [[time dilation]] in such way that the whole ''spacetime'' is flat.  

</ref>) but is curved having certain [[curvature of space]] and the time reflects faithfully this [[curvature of space]] through the gravitational [[time dilation]] in such way that the whole ''spacetime'' is flat.  

This global flatness of spacetime is an important feature. without it the movement of certain geometrical structures (tensors) that describe things in space and time (therefore in 4 dimensions: 3 in space and 1 in time) wouldn't have the property of keeping the strict conservation of energy and momentum between the ''now'' and the ''past'' or the ''furture''. There wouldn't be any [[conservation law]]s valid in the universe. The things would be spontanously created from nothing and disappearing without trace from one moment to another just by the virtue of mathematical manipulation (as it happens in the [[Big Bang]] hypothesis in which spacetime is "curved") (luckily not in this universe of ours since then we would be forced to believe in "ghosts" while they would be created and disappear without no reason whatsoever). The creationist might be happy but the [[science]] wouldn't be as we know it today. Now in [[science]] neither energy nor momentum can be created from nothing as it is assumed in the [[Big Bang]] hypothesis with its [[curvature of spacetime]]. [[Conservation law]]s assure that energy and momentum are conserved separately (not as some [[relativists]] think, "together" as Wheeler's hypothetic "momenergy" in which energy is assumed to be able to be converted into momentum and v.v).

This global flatness of spacetime is an important feature. Without it the movement of certain geometrical structures (tensors) that describe things in space and time (therefore in 4 dimensions: 3 in space and 1 in time) wouldn't have the property of keeping the strict conservation of energy and momentum between the ''now'' and the ''past'' or the ''future''. There wouldn't be any [[conservation law]]s valid in the universe. The things would be spontaneously created from nothing and disappearing without trace from one moment to another just by the virtue of mathematical manipulation (as it happens in the [[Big Bang]] hypothesis in which spacetime is "curved") (luckily not in this universe of ours since then we would be forced to believe in "ghosts" while they would be created and disappear without no reason whatsoever). The creationist might be happy but the [[science]] wouldn't be as we know it today. Now in [[science]] neither energy nor momentum can be created from nothing as it is assumed in the [[Big Bang]] hypothesis with its [[curvature of spacetime]]. [[Conservation law]]s assure that energy and momentum are conserved separately (not as some [[relativists]] think, "together" as Wheeler's hypothetic "momenergy" in which energy is assumed to be able to be converted into momentum and v.v).

This essay is meant to explain this strange physics of [[gravitation]], with which we deal every day but generally don't understand it, don't know how it operates and where the "gravitational force" is coming from, except for some physicists

This essay is meant to explain this strange physics of [[gravitation]], with which we deal every day but generally don't understand it, don't know how it operates and where the "gravitational force" is coming from, except for some physicists

</ref>.  

</ref>.  

Newton was wise man and didn't belive in things that he thought are impossible. Then there were many things seemingly impossible. Though gravitation was obviously possible. How did it work?

Newton was wise man and didn't believe in things that he thought are impossible. Then there were many things seemingly impossible. Though gravitation was obviously possible. How did it work?

The description of gravitation starts with the next section.

The description of gravitation starts with the next section.