What do you imagine when you hear: "Universe"? Infinity? Huge open space? Or darkness? We all know that our universe is huge.But how?
Earth's address
Let's say each planet has its own address.Galaxy,Star system,Its name..But what address has Earth?
It is our Earth.Beautiful,isn't it?
Let's go on.It is our star system - Solar.
It is interstellar neighborhood.That is, all stars that are relatively near.
Light's speed in vacuum is 300 000 km/s.
Here we come to the galaxy.By the way,many scientists have said that humanity will never fly beyond our galaxy.
Group of galaxies
Here is the entire VISIDLE universe! Now, remember where is the Earth...
