Scale of the Universe | The Universe in Perspective

Universe

 The universe is what is in the dome of the sky, the celestial bodies of which is opaque, such as planets, the earth we live on one of these planets, and celestial bodies have shining and moving such stars as that of our sun which gives us light and heat is one of them, and the scientific concept of the universe that vast space that contains stars and galaxies, planets, meteorites and comets, where they all belong to the so-called galaxies, and there are a huge number of them but these galaxies different forms some of which is oval and some of which is phallic, the most famous of these galaxies, the Milky Way galaxy, which belongs planet Earth.

 The sky that we see is not the physical medium but are gases fixed rate spreads in space and the blue color that we see, but the only color that remains of the spectrum resulting from the decomposition of sunlight, and that all celestial bodies in space are members of our planet to which we belong, which is known galaxy, and if they watched particular star at a certain time note change place, and this is because the Earth's rotation around itself resulting in day and night. Another cycle of the Earth around the sun result in a succession of four seasons summer, winter, autumn and spring.

There are many opinions and hearsay are many theories and different ancient about the evolution of the universe and that is eternal or everlasting has theories proved that the universe is eternal because it is not up to the state of balance and equilibrium state according to the laws of physics mean that the universe is one block share the characteristics and qualities, Article transmitted from high-region density to low density area, the heat transmitted from the body with a higher temperature to low body temperature. This proves that the universe is eternal.

There are two names are very evenly in universe,  universe and cosmic space, few of us don't realize the difference between the word universe and cosmic space Word, naming universe imply or express our observable universe which we can see, the cosmic space label include everything God almighty created whether we can see Or can't see it. The term universe is a term derived out of this word so system means a Greek named universe that of regularity, the word universe it existed forever.

You can measure cosmic distances, astronomers on behalf of what he called the light-year and using a light-year measure the distance between the planets and galaxies.