what is at the center of the observable universe
Observable universe
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 has had time to reach Earth since the beginning of the cosmological expansion . There are at least 2 trillion galaxies in the observable universe . Assuming the Universe is isotropic , the distance to the edge of the observable universe is roughly the same in every direction . That is , the observable universe has a spherical volume ( a ball ) centered on the observer . Every location in the Universe has its own observable universe , which may or may not overlap with the one centered on Earth . 
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 has had time to reach Earth since the beginning of the cosmological expansion . There are at least 2 trillion galaxies in the observable universe . Assuming the Universe is isotropic , the distance to the edge of the observable universe is roughly the same in every direction . That is , the observable universe has a spherical volume ( a ball ) centered on the observer . Every location in the Universe has its own observable universe , which may or may not overlap with the one centered on Earth .
The observable universe is a spherical region of the Universe comprising all matter that can be observed from Earth at the present time.  That is, the observable universe has a spherical volume (a ball) centered on the observer.
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 has had time to reach Earth since the beginning of the cosmological expansion . That is , the observable universe has a spherical volume ( a ball ) centered on the observer .
The observable universe has a ball centered on the observer.
That is , the observable universe has a spherical volume ( a ball ) centered on the observer .