Earth Space Science Final

The big boom theory

The giant bang theory

The cosmic explosion theory

The big bang theory

At first, our universe was in a hot and extremely dense state.

Then, it exploded and created space (tér), energy, matter and time.

As the radiation from the explosion decreased, the first atoms were formed, mostly carbon and iron.

Atoms formed atomic clouds, and the gas within them had enough gravity to cause more atoms to collect. They will form the core of stars.

solar systerm

galaxy

constellation

astronomy

helium

iron

carbon

hydrogen

In the Milky Road

In the nuclear bulge of the galaxy

On the Orion Arm

In the Andromeda galaxy

Meteors

Meteoroids

Meteorites

Comets

comet

meteoroid

asteroid

meteor

hydrogen and helium atoms are created

nuclear fusion

hydrogen atoms cool helium atoms down

other stars born

Astronomical unit

Cosmic mile

Astrological kilometre

Light- year

It has 2 movements: orbits the nuclear bulge of our solar system and rotates around its axis.

It mostly consists of iron and oxygen.

The nuclear fusion reactions in its core produce the gravity of Earth, thus making our planet habitable.

Compared to other stars its size is huge.