The moon as a satellite is the only natural astro on Earth. With an equatorial diameter of 3474 Km1 is the fifth largest satellite of the Solar system, while in terms of size adjusted to its planet is the most great satellite: a quarter of the radius of the Earth and 1 over 81 of its mass.
After Io, it is also the second thickest satellite. It is in synchronous relation with the Earth, always exposing the same face towards the satellite. The perceptible hemisphere is marked with dark lunar seas of volcanic principle between the radiant old mountains and the Astroblemas retracings.
Despite being in shape the most lustrous object in the sky after the sun, its area is actually very dark, with a calculation equivalent to that of coal. Its relief in the sky and its regular cycle of phases have formed the moon an object with significant cultural authority from old age in both language, almanac, art or science.
The gravitational dominance of the moon originates the tides and the increase of the duration of the day. The orbital path of the moon, about thirty times the diameter of the Earth, makes it distinguishable in the sky with the same dimension as the sun and agrees that the moon will cover the sun on time in the general solar eclipses.
The moon as a satellite is the only celestial organism in which the human being has executed a manned descent. However, the moon program of the Soviet Union was the first to achieve the moon with a spacecraft not conducted, the Apollo program of the United States carried out the only works led to the terrestrial satellite until today, undertaking with the first orbit Lunar Guided by the Apollo 8 in the year of 1968, and six moon landings carried between 1969 and 1972, being the first the Apollo 11 in 1969, and the last one the Apollo 17.
These missions returned with more than 380 kg of lunar rock, which have authorized to obtain a pointed geological penetration of the beginnings of the moon (it is believed that it was constituted 4.5 billion of years later of a great bombing), the alignment of its Internal distribution and its back story.
Physical characteristics of the moon as a satellite.
Some of its characteristics are:
1. It’s great
The moon is extraordinarily large in balance with its planet Earth: a quarter of the diameter of the planet and 1 over 81 of its mass.
It is the most great satellite of the Solar system in correspondence to the size of its planet.
The surface of the moon is less than one tenth of that of the Earth, which symbolizes about a quarter of the universal area of the Earth. However, the Earth and the moon continue to be reflected as a planet-satellite system, instead of a double astral system, since its Baricentro, is located about 1700 km under the area of the Earth.
Journey to the Moon
In astronomy, a distance or lunar journey is considered as the measure of distance from Earth to the moon. The average distance between the Earth and the Moon is approximately 384 400 kilometers. Also, the actual distance may vary according to the length of the moon’s orbit.
Likewise, measurements are made of high regularity of the distance to the moon calculating the time it takes the light to walk between the stations on Earth and retro reflectors installed on the moon.
On the other hand, the moon deviates from the Earth at an attempt rate of 3.8 cm per year, as revealed by the laser Lunar Test experiment. In this sense, the rate of recession is thought to be unevenly high. By chance, the transverse of the cubes of retro reflectors on the moon is also 3.8 cm.
It is important to clarify that the first person who had the distance to the moon was the astronomer and geographer Hipparchus in the year 150 BC. This was founded in the testimony of the diameter of the Earth, deduced by Eratosthenes 100 years before. Reached a distance of 348 000 km. For this calculation wielded the torsion of the shadow that machine to the Earth on the moon in a lunar eclipse, a procedure imagined by Aristarchus of Samos.
It is important the small error, given the restrictions of the stage, being of just about 36 000 km, which symbolizes less than 10%. In this way, the catalogue of nearby essences of NASA contains the distances to the earth of rocks and kites measured in lunar routes.
Moon as a satellite movement the fact that the moon leaves about an hour later each day is exposed knowing the orbital space of the moon around the earth. The moon completes a turn near the earth around in about 28 days.
If the earth does not turn on its own axis, it would be very easy to discover the movement of the moon in its orbit. This movement makes the moon progress about 12 ° in the sky every day. If the earth did not revolve, what would be noticed would be the moon traversing the celestial dome from west to east for two weeks, and then it would be two weeks distant (during which the moon would be perceptible on the dissimilar side of the globe).
However, the Earth completes a turn every day (the direction of rotation is equally eastward). So, every day brings you to Earth about 50 minutes more to be in front with the Moon repeatedly (which represents that you can see the moon in the sky). The rotation of the earth and the circular movement of the Moon are conformed, so that the exit of the moon retards the opinion of fifty minutes each day.
Moon as a satellite: rotation movement
The moon travels on a rotating axis that has a movement of 88.3 ° with respect to the plane of the sobrentendida of the next Earth. Since the permanence of the two movements is the same, the moon exhibits the earth Perseverantemente the same universe. The moon differs about 27.32 days in taking a turn on herself.
Moon as a satellite: atmosphere
The moon has an inconsequential atmosphere thanks to its lack of gravity, unable to hold gas molecules in its plane. The generality of its constitution is still unknown. The Apollo program resembled atoms of helium and argon, and later in the year 1988, investigations from the ground increased sodium and potassium ions. Most of the gases in your area come from inside.
Thanks to the originality of the lunar orbit, the tendency of the axis of rotation of the moon with respect to the plane of the ecliptic and the movement of turn of the Earth in the course of an astral revolt, one can see, from the Earth, a 59, 1% of the area of the moon instead of 50% of it, as if it were excited of slight swings from east to west and from north to south. These currents simulate are known with the nickname of Librans.
As a conclusion we must consider that the moon is not only a beautiful circle that perfects the universe, it is important to clarify that this is of great relevance because besides this, the moon as a satellite is one of the most important bodies of our solar system.