Observable Universe

The Observable Universe consists of all matter in our Universe that can be observed by us, with a diameter of 8.8*1026 m, 880 yottameters, or 93 billion light years.

We know the Big Bang happened 13.8 billion years ago and the rate of expansion is currently accelerating. We don't know what accelerates, but we predict it is caused by Dark Energy, a type of Dark Matter.

As the time passes by, the gaps between galaxies are expanding, which means we will lose our opportunities on observing a lot of galaxies over time.

Structures
It contains the following substructures from Observable Universe:
 * Hercules–Corona Borealis Great Wall (galaxy wall)
 * Huge-LQG (large quasar group)
 * U1.11 (large quasar group)
 * Clowes–Campusano LQG (large quasar group)
 * Sloan Great Wall (galaxy wall)
 * CfA2 Great Wall (galaxy wall)
 * Sculptor Wall (galaxy wall)
 * Grus Wall (galaxy wall)
 * Fornax Wall (galaxy wall)
 * Pisces-Cetus Supercluster Complex (supercluster complex)