The Universe is the set of stars and of everything what exists in the space and, although immovable in appearance one is
in constant evolution, and it goes from tiny elements like interstellar molecules; interstellar dust constituted by particles of iron, graphite and silicon; gaseous clouds of helium, hydrogen or nitrogen, etc. The celestial bodies or stars are in continuous movement and can emit light own or to reflect it. There are many stars: sun, moon, stars, I commit, quasares, you will press, the Earth… and its distribution obey the laws of attraction and repulsion. The stars are incandescent gas balls that emit light and other forms of energy remaining fixed in the firmament, while
planets and
satellites change of position throughout the year. The planets emit light, but it is a reflection from which they receive from the sun. “Orbit” is called to the route that they do the planets around of sun and “satellites” to the stars who turn around planets. The tumbling is in opposition to the one of the needles of the safe clock in Venus and Urano that do it in opposite sense. Our galaxy is called Via Milky belongs to the call “Local Group” next to Andrómeda; M 33 and others, being Andrómeda the greater one of the group. The planets in relation to proximity of the sun are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto