Paloma BustamanteXiomara RamírezIV°C

HISTORY OF THE UNIVERSE

The Scientific community The bing bag theory :• All matter in small point with no volume• No matter, only energy• The point exploded 15 billion years ago

ORIGIN OF THE UNIVERSE

Earth is one of eight planetsOur sun is a star Stars cluster to form galaxiesOur sun is one of over 300 billion stars in

the milky way galaxyMilky way is one of 100 billion galaxies

in the visible universe Most galaxies look stars to us

STRUCTURE OF THE UNIVERSE

Universe

Galaxies

stars

sun

planetary system

planets

satellites

asteroid

Milky way

COMPONENTS OF THE UNIVERSE

Disc: Fine flattened formed of stars, gas and dust, eight spiral arms whichemerge structure. In this region our planetary system is located.

Bulb: central composed only of stars, called galactic core.

Halo: quasi-spherical structure that surrounds the Milky Way globular clusters composed of very old stars.

MILKY WAY

As its name implies, a planetary system consists of several planets that orbit around a star. Although it is assumed that the universe overflows with planetary systems, the only thing we know for sure is ours, that is, the solar system, formed by the Sun, nine planets with their satellites, asteroids, comets, interstellar dust, interplanetary particles and fields associated with the solar wind.

PLANETARY SYSTEM

It is a number of smaller bodies also contained in the Solar System. Asteroids are rocky objects that orbit the Sun in stable orbits between Mars and Jupiter. Meteorites turn out to be pieces of asteroids or comets that cross Earth's orbit. Comets, meanwhile, are also cosmic debris. Unlike asteroids are made of rock solids and gases.

ASTEROIDS, METEORS AND COMETS