Although the theoretical physicist’s theory of general relativity Albert Einstein having proved extremely effective in describing the gravity of stars and planets, it turns out not to be applicable to all possible scales.
We know that absolutely everything in the Universe has gravity, and that the Universe feels it too. However, gravity, which is the most common force among all known fundamental forces, presents a huge challenge for physicists.
Over the decades, the General Theory of Relativity passed many observational tests. From the first, in which Eddington’s measurement showed us the deflection of starlight from the Sun, in the year 1919, to the very recent detection of gravitational waves.
However, when we try to apply the laws of Einstein’s theory to extremely short distances, where the laws of quantum mechanics cooperate or even when we try to describe the whole Universehis theory ends up bringing us unsolved questions.
The results of recent research indicate that perhaps Einstein’s Theory of General Relativity needed to be, in some way, adapted to the scales in which it is not able to “fit”. It is possible that we design tests to verify whether or not the Universe ends up obeying the rules that Albert Einstein’s theory establishes.
The theory describes gravity as the bending or warping of space-time, as it would bend the paths by which light and matter travel. Therefore, it is of paramount importance to remember the fact that theory predicts that the paths of light beam and matter must be bent by gravity in the same way.
What do recent theories say?
Very recent research indicates that there is evidence of a possible inconsistency with the physicist’s prediction, despite the fact that the statistical significance is very low. This ends up demonstrating the possibility that gravity acts differently on large scales and that Einstein’s Theory of General Relativity should receive some adjustments.
Finally, research has ended up indicating that it is very difficult to solve the voltage problem. Hubble and that to solve it it would probably not be enough to change the theory of gravity.
The way to solve this problem would probably be to add some new ingredient to the cosmological model, one that was present before the time protons and electrons first combined, forming hydrogen shortly after the big Bang.
