The solar system consists of the Sun and objects that orbit it, including 8 planets. The inner terrestrial planets of Mercury, Venus, Earth, and Mars are mostly solid, while the outer gas giants of Jupiter, Saturn, Uranus, and Neptune are large planets composed primarily of gas. The Sun contains over 99% of the mass of the solar system and exerts a strong gravitational pull on the orbiting planets, moons, asteroids, comets and other objects.

1. SOLAR SYSTEM
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4. WHAT IS SOLAR SYSTEM ?
• The Solar System is the Sun and all of the
objects in space that orbit (go around) it.
The Sun is orbited
by planets, moons, asteroids, comets and
other things.
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5. ABOUT THE SOLAR SYSTEM
• There are eight planets in the Solar System.
In order of increasing distance from the Sun,
they
are: Mercury, Venus, Earth, Mars, Jupiter,
Saturn, Uranus and Neptune.
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6. ABOUT THE SOLAR SYSTEM-2
• The first four planets are
called terrestrial planets. They are mostly
made of rock and metal, and they are
mostly solid.
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7. ABOUT THE SOLAR SYSTEM-3
• The last four planets are called gas
giants. This is because they are large
planets that are mostly made of gas. They
also have much more mass than the
terrestrial planets.
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8. THE SUN
• The Sun is a star. It contains 99.9
percent of the Solar System's mass. This
means that it has strong gravity. The other
objects are pulled into orbit around the Sun.
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9. TERRESTRIAL PLANETS
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10. MERCURY
• Mercury is the smallest planet in the Solar
System. It is the closest planet to the sun. t
makes one trip around the Sun once every
88 days.
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11. VENUS
• Venus is the second planet from the Sun. It is
a terrestrial planet because it has a
solid, rocky surface.
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12. EARTH
• The Earth is the third planet from the Sun. The
Earth is also called the Blue Planet. The Earth
is home to millions of species of plants and
animals, including humans. Earth is the only
place in the universe where life has been
confirmed to exist.
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13. MARS
• Mars is the fourth planet from the Sun in
the Solar System. Mars is dry, rocky and cold.
It is home to the largest volcano in the Solar
System. Mars is named after
the mythological Roman god of war becaus
e it is a red planet, which signifies
the colour of blood.
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14. GAS GIANTS
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15. JUPITER
• Jupiter is the largest planet in the Solar
System. It is the fifth planet from the Sun.
Jupiter is classified as a gas giant, because it
is so large, and is made up mostly of gas.
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16. SATURN
• Saturn is the sixth planet from the Sun in
the Solar System. It is the second largest
planet in the Solar System, after Jupiter.
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17. URANUS
• Uranus is the seventh planet from the Sun in
the Solar System. It is the third largest planet
in the solar system. The planet is made
of ice, gases and liquid metal.
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18. NEPTUNE
• Neptune is the eighth and last planet from
the Sun in the Solar System. It is the fourth
largest planet and third heaviest. Neptune
has four rings which are hard to see from the
Earth. It is 17 times heavier than Earth and is
a little bit heavier than Uranus. It was named
after the Roman God of the Sea.
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19. THE END
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