|The Moon is the only natural satellite that has the Earth. If we observed with well-taken care of the lunar surface we will notice some spots, many of these are enormous formed craters million years back by the fall of meteorites,
(rocks of the space), that hit against their surface.
|IIf we observed the Moon certain time of the night and soon we return to observe it one hour later, we will notice that it is in a place different from the sky. This is due to that the Moon turns around the Earth, takes 24 hours and 50 minutes him in giving the return to the Earth.
Surely you do noticed that the Moon not always is equal, does not show always the same form to us. Sometimes it is a great circle (Luna Llena), other times a piece is seen only (Increasing) and other times he is totally invisible. This is due to that its rotation is “synchronous” meaning that the time that needs to realise a revolution on its axis is the same that needs to give a return to the Earth.
IOne of the more spectacular astronomical phenomena is the eclipses, that is to say, the darkening of the Sun or the Moon during a short time interval. In particular the Sun eclipses are especially interesting, since to total day the Sun disappears and the night becomes. An indispensable condition so that a Sun eclipse takes place is that this star, along with the Moon and the Earth (in that order), is located in a same line of the space; in those conditions the shade of the Moon will project on one limited region of the centered terrestrial surface in that line.
All the inhabitants who are in that zone of the Earth, submerged within the lunar shadow cone, will see the Sun hide themselves behind the Moon during some minutes (the time that the passage of the Moon in front of the solar disc lasts).
The solar eclipses can be total (the disc of the Sun is darkened completely), partisans (a portion of the disc is hidden) and annular (the disc of the Moon is content within the solar disc and a shining ring is seen).
During total a solar eclipse, therefore, a sky will be seen in broad daylight typically nocturne, in which some stars will shine; the solar disc will be darkened and only the weak solar atmosphere will be appreciable. The terrestrial sky during a total Sun eclipse is as dark as the one of one night of Luna Llena.
The phenomenon of the solar eclipses takes place, as we shelp, in certain and precise conditions, since the plane of the orbit of the Moon is not coincident with the ecliptic; if thus it were, the eclipses would be a much more frequent phenomenon. Dynamically, only twice per year the configuration occurs in which the three stars are on a same straight line; then the Sun eclipses will only be possible.
Not as spectacular as those of Sun, although quite showy, they are the Moon eclipses. When the Sun, the Earth and the Moon (now in this order), are located on a same line of the space, happens that the Earth shade covers the surface with the Moon, that in the occasion will be necessarily in its phase of Luna Llena. Then we see the darkening of the lunar disc. These eclipses will be visible for all the Earth inhabitants who, then, have the Moon over their respective horizons. The maximum duration of a lunar eclipse is of 104 minutes. The darkening of the Moon during the total eclipse (when the Moon is completely within the shadow cone of the Earth) not always is equal; in some eclipses very it is pronounced and others not as much.
This peculiar situation depends on the ruling conditions in the high terrestrial atmosphere, which will be crossed by the grazing solar rays that delimit the Earth shade; if there is much dust in the atmosphere, for example by recent volcanic eruptions or very dense clouds, the eclipse will be darker. A data to consider is that a Moon eclipse always agrees with the phase of Luna Llena and only at night will be observed it; however a Sun eclipse corresponds to Luna Nueva, and therefore we will see it in broad daylight.
WISE PEOPLE WHO?
|The Moon is 1/4 the size of the Earth and that the Earth would be as a soccer ball whereas the Moon would be an orange
There is no air in the Moon
The first person who walked in the Moon was Neil Armstrong, in 1969
The Moon moves 1km every second.