Comparing astronomers

Hello fanatis of science!
I'm writing again, excuse me for my delay.

Today we are comparing astronomers: Claudius Ptolemy and Galileo Galilei.

Well, they both were astronomics, but no both of them had the same piont of view.

Claudius Ptolemy though that in the theoreme of the geocentric model of the universe.
Galileo Galilei, however, was in favor of the theoreme of the heliocentric model.

Do you know the difference of tis two theoremes?

Geo--> World
Helio--> Sun

Are you still confused? Watch the next video (excuse me for the language, is in spanish)

MY PRESENTATION-UNIVERSE

MY PRESENTATION-UNIVERSE

UNIVERSE

  This is a egiptian myth about the creation of the universe. There is a giant central mound and three suns shaining it. There are also two godnesses pouring the mound with water.

The universe is were everything that exits is. In the Universe there are all the planets, stars, galaxies...

 This is a myth about the creation of the sky. There were a sky father who has created the sky and the four direction with colors: East-white, West-blue, South-yellow and North-black.

There are two sientific point of views about the universe. One is that it never had a beginning and that it will never have an end. The other one is t

hat ther was a beginning and that some day there will be an end.

 The universe's 90% of the matter is the dark matter and the rest 10% are gas and energy.

The Big Bang is a theory that sais that everything was concentrated in  a point and that there was an explotion that expanded it. That is how the universe was created.






 After this Big Bang all the planets, stars, asteroids... were created. There are seven different planets.

The stars are really big. We think that the sun is not a star but actually it is the biggest one.