Large scale structure of spacetime pdf

Please forward this error screen to sharedip-1601531662. Large scale structure of spacetime pdf of the whole observable universe. The scale is such that the fine grains represent collections of large numbers of superclusters.

The observable universe is a spherical region of the Universe comprising all matter that can be observed from Earth at the present time, because electromagnetic radiation from these objects have had time to reach Earth since the beginning of the cosmological expansion. There are at least 2 trillion galaxies in the observable universe, containing more stars than all the grains of sand on planet Earth.

Assuming the Universe is isotropic, the distance to the edge of the observable universe is roughly the same in every direction. Every location in the Universe has its own observable universe, which may or may not overlap with the one centered on Earth.