Nebula planets which will become stars Neptune Uranus Saturne Jupiter;
Nebula all the nebulas are due to the explosion of the atmosphere of a planétoile (a planet which will become studs) and which during its explosion are going to extend in all the galaxies of the universe.
Jupiter, Uranus, Saturn and Neptune are planétoiles. They will thus become stars each their tour; and it is when it will become stud that their atmosphere will explode and that the nebula that they will create will go away in the borders of the galaxy, thus passing on each of their satellite. It proves that when the Sun got clearer, it propelled as well all its atmosphere on each of its satellites and as thus all the planets of the solar system have some water.