As it occurs in illustrations of the Solar System it are of scale, this is one of the situations where an image finishes for harming the agreement of data concept. Planets with rings the didactic books normally show to the planet Saturn as being the only world of the Solar System to possess rings to its redor. However, already it has some time if it knows that the other gaseous planets (Jupiter, Uranus and Neptune) also possess rings, despite the same ones are visible only for telescopes from Land, having been discovered only after the advent of the interplanetary sounding leads. Number of satellites Each planet possesss a specific number of satellites (moons) that they turn its redor. In such a way, it is known that Mercrio and Venuses do not possess moons, to the step that the Land possesss one, Mars two, and so on.
However, some didactic books many times inform incorrect values on the amount of moons around each planet. Boczko (1998) remembers that such information would have to come folloied with comments of that amount of satellites is the known one until the date of the publication of the book and that, had the new discoveries, such number tend to increase. In such a way, one knows currently that the Jupiter planet possesss 63 moons, even so some didactic books, outdated, inform that this number not pass of 16. Points Cardinals didactic Books normally describe the procedure of localization of the points cardinals (north, south, east and west), however without the care to distinguish the point cardinal in itself of the region where the same one meets. Together with the description of the procedure of identification of the points normally he comes the affirmation of that the Sun is born in the East and if he puts in West (PAULA & OLIVEIRA, 2002). But in the reality the Sun is not born nor if it puts accurately in the same point of the horizon throughout the year.