Thursday, March 12, 2009

My Solar System Report

I had to do a research project on the solar system and i d=found out alot.

WHAT IS THE SOLAR SYSTEM?

The solar system is a system of planets in our galaxy, with the sun at its centre. There are four inner planets — the ones closest to the sun — an asteroid belt, then the four outer giant gas planets, and finally, the Kuiper belt.

WHAT DOES THE SOLAR SYSTEM LOOK LIKE?

The solar system is made up of planets, gas and dust that travel in ever moving elliptical tracks around the sun. The sun is a huge ball of flames and gas, towering over all other planets with its mighty glow.

THE NAMES OF THE PLANETS ARE...

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. 

WHER IS THE SOLAR SYSTEM?

Our solar system is on the outreaches of the Milky Way Galaxy. We are located on one of its spirally arms, out to the edge of it. The arms are named after the constellations seen in those directions. The major arms  are called the Perseus Arm, the Sagittarius Arm, the Centaurus Arm and the Cygnus Arm. Our galaxy is situated on an arm called the Orions Spur.

AU in astronimacal terms means 'Astronomical Unit' = 149 598 000 kilometers. The solar system is 160 AU wide!

WHAT DOES THE SOLAR SYSTEM DO?

The sun has a gravitational pull on all planets, comets, meteorites, satellites and asteroids. This means they dont drift away, they stay on their own course around the sun. And the sun has its own track around the galaxy! A very, very low one that takes 280 million years!

A BLACK HOLE

A black hole is an area of space where the gravitational pull is so powerful that nothiing can escape it. One may observe gas that spirals into the black hole. It heats up to very high temperatures that can be seen from earth-orbiting telescopes. Such observations have shown that black holes do exist in the universe.

Thank you! And thanks to all those sites i got the info from. :] 


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