New Light on Dark Energy

The European Southern Observatory (ESO) has recently in the past been measuring the distribution and motion of thousands of galaxies through out the universe. Ten years ago astronomers found that the universe is expanding at a faster pace than it has been in the past, and trying to understand the reason behind this is one of the largest questions in modern cosmology. As Enzo Branchini explains, that there are two situations possibilities to understanding this, "Either the universe is filled with a mysterious dark energy which produces a repulsive force that fights the gravitational brake from all the matter present in the universe, or, our current theory of gravitation is not correct and needs to be modified, for example by adding extra dimensions to space."
Apparently this is something that no one seems to be able to decide between the two decisions but scientists are able to understand that the motion of distant galaxies depends on two things, the expansion of the universe that is pushing the galaxies away from each other and the gravitational attraction of the matter in the galaxies the pulls them together.Using the data found they have been able to reconstruct this image of the distribution of the galaxies in the universe. The uncertainties that arise in trying to understand the motion of the universe one helps to point to some form of dark energy that acts as another alternate energy source within the universe or there are many things about gravity that we have yet been able to explain in understanding about how it truly works. This article can be read at

http://www.astronomy.com/asy/default.aspx?c=a&id=6563

and it might make some more sense that what i wrote