The solar system is enormous . So much so that its dimensions are beyond the ability of our brain to imagine what is meant by such large numbers. To say that the Earth is more than 149 million miles from the sun is not enough to give us an idea of \u200b\u200bwhat it really represents that distance. When we read that the Sun has a diameter of just under a million and a half miles, your mind is not enough to visualize what this size means. And the little film that we mentioned earlier help us in this task, because we give the erroneous impression that the Sun is few times larger than the Earth, or Pluto is considerably further from the Sun Mars. But the Solar System dimensions are impressive enough to make it completely impossible to make a representation to scale and include it in a sheet of textbook: if we did, the planets are not visible not even using a magnifying glass.
To better understand the sizes and distances involved we compare the most important objects of the system Solar with other everyday. We begin, as appropriate, with the pair greatest influence on our lives: Earth and the Sun know that our planet has a diameter of about 12,750 kilometers, which is about 150 billion meters away from the Sun Assume for a moment that the Earth has the approximate size of a tennis ball. On this scale, the Sun would be an area of \u200b\u200babout seven meters in diameter, which is about 1200 miles away. That is the challenge faced by managers illustrate the dimensions of the Solar System. If we keep doing calculations keeping the distances between planets and their size in the same scale the previous example, we are back in trouble: if the Earth was a 1200 miles from the sun, Pluto would be about forty-seven thousand and about the size of a marble. Clearly we need a scale for distances, and another, completely different to the diameter of the Solar System bodies .
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