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Wednesday, October 26, 2005 - ore 12:30
IM GONNA GUIDE YOU THROW SOLAR SYSTEM
(categoria: " Vita Quotidiana ")
DEFINITION :The Solar System is made up of the Sun, the planets, their moons, asteroids and comets YOU KNOW WHAT TO SEE?!
The SunThe Sun is a star that lives at the centre of the Solar System. Its huge gravity holds the planets in place.
The planetsThe planets all revolve around the Sun. There are nine in total - Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto.
MoonsMoons rotate around their parent planet. Earth has one moon, but some planets have over 30. Only Mercury and Venus do not have any moons.
AsteroidsAsteroids are rocky bits of debris up to 1,000km (620 miles) across. Most live in the asteroid belt between Mars and Jupiter. They are the remnants from early planets that collided and were torn apart.
CometsComets are dirty snowballs of ice and dust that revolve around the Sun in long orbits. When they approach the Sun they heat up, leaving a trail of gas behind them, which looks like a tail.
Recent comets to fly-by the Sun include Halley, Hale-Bopp and Ikeya-Zhang.
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