We rush around the sun at an incredible rate - about 100 000 km / h.And each year, flying about nine million kilometers, we come back to the same point, with which began this incredible journey through the darkness and the vacuum of space.The three main parameters: the orbit of the Earth, its rotation around its central axis and the slope of the imaginary rod, called precession, formed the appearance of the planet and still continue forming its image.So, determine the whole life of humanity every minute of every day in the course of billions of years of Earth.
But there is a fourth fateful option without which the Earth's orbit, and its circulation around the central axis and the precession would have been meaningless in terms of the formation of the unusual shape of the planet, and, most importantly, the origin and development of life on it.
The fact that the Earth in the solar system takes quite incredible, perfect, unique (here any adjective is appropriate!) Position, the world science has called "Goldilocks zone."By this term is meant an arrangement of the planet with respect to a celestial body, in which water is in a liquid state, and therefore, it becomes possible appearance of life.The orbit of the Earth, which is located just on such a comfort and a favorable distance from the sun.
Since the birth of our own blue planet has done for more than four billion turnover from its phenomenal orbit.And everything that flies past the Earth, again and again By doing your space the way, is an extremely hostile environment.This is the most extreme journey into the history of mankind.
Earth's orbit around the Sun - a very dangerous route where deadly solar radiation and cosmic destructive cold accompanied by violent attacks of comets and asteroids.This is not to mention the enormous amount of less probable threats.But, despite the many dangers that await us on the way, the orbit of the Earth, as stated above, is in a totally right place.Perfectly right for life.The other planets of the solar system were not so lucky ...
Earth was born a little more than four billion years ago from a cloud of cosmic dust and gas, which remained after the formation of the sun and revolved around a newborn star.This birth was an ordeal, both for the planet and for its orbit.As it grew young Earth is attacked by other celestial bodies - the era of the Great clashes that eventually determined the ordering of the whole structure of our planetary system.
There is overwhelming evidence that in this period of chaos the Earth collided with a certain small planet also revolves around the sun.The result of this cosmic cataclysm was the phenomenon of precession.The earth began to rotate at an angle relative to the vertical 23,5o, and that led to such a variety of climates on the planet.If the central axis is perpendicular to the orbit, the day on our planet would be equal to the night.And we never would have seen sunrises and sunsets ...
