Second+draft

__The orbit of the planets in Solar system: Sun's action Vs. Interactions inside the system.__
 * Super job, and your vivencias are just what I asked for... 6pts**

The Solar System is a set of planets and asteroids moving around the Sun, a big red star composed mostly of hydrogen and helium, representing more than 98% of the mass of the complete system. Such as a celestial body, as you might be thinking, **it** is very related to the gravity inside the system, to the forces that attract bodies between each other, and, consequently, to the movement of those bodies.

Planets move around the Sun describing particular curve **d** lines called //ellipsis,// the same curves you obtained whenever you cut a cone with any plane that is not parallel to the basis of the cone, mathematically described as, given two fixed points, the set of other which distances to those two always sum a constant. Basically, an ellipse is kind of a circumpherence with two centers, named focus, in wich ratios are not constant.

There are two theories explaining why planets move that way. The first one proposes it is due to the relationship between all the bodies in the system, planets, asteroids and Sun, arguing that, as every planet as its own gravity force, all the planets attract into each other, so the movement of any of them is caused by a lot of different forces acting simultaneously on it. The second theory asserts the movement of each body is due to the interaction between itself and the Sun, and dismiss **es** all the other possible interactions inside the System

This second one **comma** seems to be closer from true. Those people who defend this second theory are usually based on the fact that the Sun is bigger and "heavier" than the rest of the system joined together, so, it is reasonable to think this huge hot mass must apply a gravitatory force on each planet that is ten times stronger than any other of it. After remembering planets move around the Sun, it also turns out that, after drawing the orbit of each planet, the Sun is on one of the focus **es** of each ellipse, so the distance to the Sun, (and to the other focus, that depend **s** on each planet) conditions the orbit.

I support this second theory, I believe the orbits of the planets are determined by its interaction with the Sun, because it is known the ellipsis that planets describe through their movement must have one focus on the Sun, the biggest and more important body of the whole system, which applies the most important gravitatory force on each one of them.