THE SOLAR SYSTEM

The Solar System:Our Solar System is made up of one star; the

sun, and eight planets because Pluto was the number nine but actually it isn’t because is considerate very small.

The Solar System was born about 4.6 billion years ago.

The four smaller planets are  Mercury, Venus, Earth and Mars, also called the terrestrial planets, are primarily composed of rock and metal.

The four other planets, the gas giants, are bigger than the terrestrials.

The two largest, Jupiter and Saturn, are composed mainly of hydrogen and helium; the two other, Uranus and Neptune, are composed of ices

This is the SOLAR SYSTEM

The Sun:Everything in the Solar System orbits around

the Sun, and it is the star at the center of the Solar System

The Sun provides all of the light for the Solar System.

The Sun contains around 98% of all the material in the Solar System.

The Sun is so large, its powerful gravity attracts all the other objects in the Solar System towards it.

The mean distance of the Sun from the Earth is approximately 149.6 million kilometers 

Mercury:It´s the first planet near to the sun.Temperatures on Mercury get up to

460 degrees Celsius. It's a whopping 640 degree temperature change

from the hottest to the coldest part of the planet.

Mercury has almost no atmosphere.Mercury, like the Moon, is covered with craters.

Because the planet has no atmosphere, the asteroids never burn off

Venus:The second planet away from

the Sun. Venus is one of the harshest planets in the

Solar System. It's over 460 degrees Celsius. It has clouds of sulfuric acid in an

atmosphere of carbon dioxide. Lava is found across the surface after being

spewed from volcanoes.

Earth:The third planet from the Sun is your home. The Earth is the only known planet where life

can survive.We have a very narrow temperature range that

allows water to remain a liquid. Most of our atmosphere is made of

nitrogen (N), a relatively inert gas.

Mars:Mars is the fourth planet from

the Sun. It is a very active planet like the Earth. It only has 40% of our gravity because the

mass of the planet is so much smaller. It even has polar ice caps like the Earth,

with water in the north and solid carbon dioxide in the south.

Jupiter:

Jupiter is the largest planet in our Solar System.

Its mass is over 300 times the mass of the Earth.

Jupiter is classified as a Jovian planet. The Jovian planets are gas giants that orbit the Sun.

Its atmosphere have over 20 moons.

Saturn:Saturn is the second largest planet in the

Solar System.A day on Saturn is only about 10.7 hours.It is amazing that a planet that has a

diameter almost 10 times that of the Earth spins more than two times as fast.

That speed also gives Saturn a bulge at its equator.

Uranus:The seventh planet from the Sun is Uranus.Uranus is a planet largely composed of gases.It has a light blue color because of

the methane in its atmosphere.William Hershel discovered it

in 1781.It is one of the four gas giants

in our Solar System.

Neptune:Neptune is huge in size Neptune's atmosphereis made up of hydrogen and helium.

Neptune has large storms wirling in its atmosphere.

The storm was moving at more than 500 miles per hour.

compared to Earth

ASTEROID BELTThe asteroid belt is a 'belt' of rocky bodies between

Mars and Jupiter that is centered around 2.7AU. The total mass of the Main Asteroid Belt may be less than 1/1000 of the mass of Earth. If all the asteroids were combined together, their diameter would be about 1,300-1,500 kilometers across, less than 1/2 the diameter of the Moon.

Most asteroids in the Main Belt are composed of three materials. 92.9% are composed of silicates (stone), 5.7% metals (mainly iron and nickel) and the rest as a mix of those materials and carbon-rich substances.The largest asteroid in the main asteroid belt is Ceres.

Pluto:We didn't even know that 

Pluto existed until the 1930's.Its size is one of the big reasons that

astronomers stated that it is no longer considered a true planet.

passes in an out of the orbit of Neptune and doesn't orbit in the same plane as the other planets.

THE SOLAR SYSTEM

The Solar SystemOur planet, Earth, is part of the SOLAR SYSTEM.The Solar System contains the Sun and 9 planets.Several of the planets have moons.

The moon

When Galileo Galilei turned his telescope toward the moon in 1610 was able to distinguish two different surface regions. A dark regions called them "seas", which of course have no water and have names such as Sea of Serenity and Sea of Fertility, are plains with few craters. The rest of the lunar surface is brighter, and represents higher regions with a high density of craters, such as Tycho and Clavius . In the lunar surface there are mountain ranges that have names like Alps and Apennines, like on Earth.

Charged planets

How many stars are in tehe solar system ?

The answer to ‘how many stars are in the Solar System’ is pretty straightforward, or is it? There is only one star that has ever been observed in our solar system, but some scientists have theorized that there is a second star out beyond the Oort Cloud that only comes close enough to be observed every 32 million years. That length of time between observational periods would explain why a human has never proven its existence.

Read more: http://www.universetoday.com/15580/how-many-stars-are-in-the-solar-system/#ixzz2BfLbSkRP

MeteorsMeteors are streaks of light, usually lasting just a few seconds, which people occasionally see in the night sky. They are sometimes called "shooting stars" or "falling stars", though they are not stars at all. Meteors are caused by the entry of small pieces of rock, dust, or metal from space into theatmosphere at extremely high speeds. These particles, called "meteoroids" when they are floating around in space (think of very small asteroids), are traveling at incredible speeds of tens of kilometers per second (tens of thousands of miles per hour) when they streak into the atmosphere. The incredible pressure meteoroids experience when they collide with Earth's atmosphere shatters them, transferring energy to atoms and molecules in the atmosphere, which then release the energy by glowing. This glow produces the bright trails of lightin the sky we see as meteors.