The distance of the Moon and the Earth's revolving slowdown is reason by the gravitational pull of the two stars from the formation of the system.
The Moon and the Sun appear eternal. And while this is true for permanence small sample of time is human life on galactic time, is only apparent, because the Moon will end when we emerge from the star, the Sun, end their lives.
Beyond this fateful end, which could mean that humanity is no longer in the solar system, there are other indicators that contradict the appearance of permanency, such as the continued shift away from Moon on Earth. The Moon moves and moves away from about 4,500 million years ago, when at the time of formation of the solar system, a star about the size of Mars collided against a newborn Earth. The impact produced a huge disk of matter to coalesce by gravity formed the moon, orbiting at this early stage, some 23,000 miles away.
The orbit of the Moon
The first million years of the Moon must have been the cause of permanent cataclysms that primitive and unhealthy Earth. Gigantic tidal gravity that would have occurred in the bubbling lava seas would be real nightmares for a possible witness. However Moon started away continuously and, in fact, now a distance away of 3.78 centimeters per year, at which point averages 385,000 kilometers. At this point remember that the Moon is a unique satellite in the solar system, given the size it is on your planet, Earth. The moon is very large and this is important in the forming system with Earth, since the influence and interaction of gravity of both stars is crucial to life on Earth, especially in the tilt of its axis, because it produces a very stable and regular seasons. Is that if we thought for a moment that was not the moon, the Earth would have a slowdown that would become unstable, would become somewhat chaotic and all regions of the Earth that today enjoy a predictable stability, would be subject to sudden temperature changes. Human beings could adapt to these changes because through technological advances has mitigated the effects of climate extremes, but not the same thing happen with many animals and plants that need very large biological terms to suit.
The remoteness of the Moon
The call tidal bulge is the effect that the Moon exerts on the Earth's water, but it is also the tidal activity that produces the distance of the Moon. This huge amount of water in the bulge occurs tidal its gravitational force exerted on the Moon, since that is also influenced by the rotation of the earth, so that it produces an advancement of the moon. The combined gravitational forces of the moon occur on acceleration, which inevitably generates to stay away from the Earth, because a universal phenomenon in physics called “centrifugal force ". The removal rate is 3.78 inches per year and oddly enough, just simply multiply by millions of years to calculate the distance to the Moon was and investigate how it influenced and how it will influence their future away.
The length of the day on Earth
The tidal bulge terraqueous produces acceleration of the Moon, but the opposite is Earth because its rotation slows down. This could be studied in the bands of ancient corals, in which you can calculate how many days was a year in primitive times. It is estimated that when the moon formed, days lasted just under five hours to more than 4,000 million years later, at almost 24 hours today. Lengthening of the days, which means slowing the Earth's rotation, continues to average, approximately 19 hours each 4,500 million years. Hard to believe that by that time the conditions of the Earth are the same, probably the Sun is "aged" and is a red giant, which the Earth and the Moon would no longer exist. At that time the man may have moved to another star system, where living conditions and stability are enjoyed by other several hundred million years, and so on until all the material in the galaxy and the universe is consumed.