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Planetary orbits in Astronomical Units. Click to enlarge.

 

Solar System planetary orbits.

As already mentioned, when we talk of space, we usually manage scales that are clearly manifested useless for a comprehensive understanding.

For example, is enought to say that to cover the distance that separates us from the Sun (149.6 million km) on a commercial flight that travels at 1,000 kmph, would take 17 full years wiht their days and nights. In the same plane, the journey to the Moon, which is located 384,000 km from us would become a "walk" of 16 days.

The distance that separates Earth from the Sun (149.6 million km) will be known as the Astronomical Unit (AU). Thus, the Sun-Earth distance is 1 AU. In the elongated picture on the right we can get an idea of what this means, and thus we have Mercury located at 0.39 AU, Venus at 0.72 AU, Earth as we known at 1 AU, Mars at 1.52 AU, the asteroids belt is located at 2.65 AU, Jupiter at 5.2 AU, Saturn at 9.54 AU, at 19.19 AU we found Uranus, Neptune at 30.07 AU and Pluto's average orbit is nothing more and nothing less than 39.52 AU (planets represented in this graph, are not to scale with their orbits, if so, they would have been imperceptibles).

In order to make these figures more understandable, that in that way go beyond our perception, we can imagine that the Sun instead of having 1.4 million km diameter, measures only one meter. Mercury would become a shotgun pellet located 42 meters away. Venus, the size of a cherry, would be 78 meters from the Sun. Another cherry, a little bigger, it is the Earth that is located 108 meters from the our star. A pea, called Mars, would range to 164 meters. The asteroids, which are specks of dust, would be forming a belt between 300 and 400 meters from the central sphere. At 560 meters, we can found a great orange that woul be Jupiter. Saturn, a medium size orange, can be found at 1,028 meters. Uranus, a small peach, will be found at 2,065 meters. Quite beyond, at 3,240 meters, will find a medium size peach representing Neptune. Finally, at more than 4,250 meters on average, Pluto is a very tiny pellet.

   órbitas de los planetas interiores.                                                          órbitas de los planetas exteriores. Inner planets orbits Outer planets orbits







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