Part VIII : Introduction to the Earth
Question relating to this chapter
Part IX : Climates and Biomes
Weather and Climate
The Environment : The Atmosphere
The Greenhouse Effect
Is there life on Mars?
Hydrosphere, Lithosphere and Biosphere
Topic Chapters Index
The Moon and the Earth as seen from space © NASA
INTRODUCTION TO THE EARTH
The Earth is one of nine planets in the Solar System. The Sun is much too big to be included on this page.
Montage of the solar system © NASA
In order of distance from the Sun, the planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. The Sun is a star which is just one of many millions of stars which make up the Milky Way Galaxy.
If the Earth needed an identity card, this is what it might look like:
Name: The Earth.
Nickname: The Blue Planet.
Intergalactic address: 3rd planet from the Sun,
The Solar System,
Milky Way Galaxy,
Age: 4600 million years old.
Formation: A ball of dense space dust.
Vital statistics: 12,750 km in diameter.
Next of kin: Venus and Mars.
Closest friend: The Moon.
Distinguishing features: The only planet with life. The only planet with water in liquid form.
Personality: Very dynamic, always on the move, turns around once a day and orbits the Sun every year. Warm-hearted. Mostly bright and sunny, full of life. Can sometimes be a bit moody with volcanic eruptions and the odd earthquake or storm. Sometimes a little cold at the edges.
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