SIZE AND STRUCTURE OF THE UNIVERSE

The Universe is so big that we could imagine. The matter of the Universe is concentrated in only a small part of it.

The visible universe's size: 
 -The universe's limits, from the earth, are at 46.500 ligth-year millions to all directions.
 -After the Big Bang, the universe fastly expand and a half of his light didn't arrive to us and, thats why we can see it.

 Structure:
 The matter in the universe forms:
 -Minor structures (stars and system).
 -Galaxies are medium size structures formed by gas, dust and dark matter.
 -A common form is the elliptical galaxy
 -Spiral Galaxies are disk-shaped with dusty, curving arms, like the Milky Way.
-Irregular galaxies are irregular or unusual shapes.

 

Cumuls of galaxies: 
They are a set of galaxies wrapped up in warm gas. The galaxies turn one each other join by the gravity power. Sometimes they hit or absorb thereselves.

Supercumuls of galaxies: 
They are sets of galaxies, formed by big caps from all the universe. The local group are formed by the supercumul of Virgo.

Wall:
Those are the last discovered structures and the oldest and biggest in the universe. The form big strips of supercumuls of galaxies.

The Big Atractor:
The supercumul of Virgo and the other structures of the universe reach to a mistery point called The Big Atractor.

 María Cascales Albaladejo