Planetary system

We have shied away, if it were to prove how easy it implies all movements of the planets from the law of gravity and how the law opened the great Newton. We will get acquainted with the question empirically. All planets, except for some small asteroids, make your way around the Sun in ellipses, not circles, as it was supposed to Kepler, and as it is sometimes necessary to hear, even now, all these ellipses have a small eccentricity, a little respect to the equator of the sun, and have common focus, which coincides with the center of the sun. Leaving aside the dubious world, located between the Sun and Mercury can be considered the last of the nearest planet to the Sun, the average distance him from the sun equals 0.387 radius of Earth orbit, while its circulation around the Sun - 88 days, the diameter of 648 miles and weight 7k Earth's mass. Followed by: Venus, the average distance her from the sun equals 0.723 radius of the Earth's orbit, time of treatment - 224 days, the diameter - 1.616 miles, weight - 0.8 Earth masses. Earth, the average distance her from the sun about 20 million miles, while the treatment - the year that the diameter of 1.719 miles and weight 7z2zooo mass of the Sun, she is accompanied by satellite - moon. Mars average distance to a 1.524 times greater than the distance of the Earth, while the full treatment - 687 days, diameter - 909 miles and weight - 0.1 Earth masses. Mars has two moons, revolving around it in orbits relatively small radius. Distance to name a star from the sun and gradually increase correctly, and to watch Mars planet, known since ancient times, Jupiter. The distance between it and Mars is extremely large: apparently, the system lacks a member. It has long been assumed that at this point there should be another undiscovered planet. Expectations were met: 1 January 1801 Piazzi discovered the planet and named it Ceres, the calculations were made by Gauss. This is an unusually small celestial body: its diameter is only 50 miles, the axis of its orbit to 2.768 times the corresponding axis of the Earth, while its total circulation 1.682 days. But soon, however, was that not one Ceres fills the space between Mars and Jupiter; immediately found were: Pallas, Vesta, Juno. Since then, the sky is subjected to systematic studies and make his photographs; efforts of astronomers to succeed, and annually offers a number of small celestial bodies, the so-called asteroids. By the end of 1891 it was known asteroid 324. Their diameter varies between 375 and 25 km; Leverrier studies have shown that their total weight is only 1 / 4 of Earth's mass. Shortest time of treatment of asteroids around the Sun is equal to 1.137 days, naidlinneyshee - 2.867 days. Ekstsentritsitet their orbits are in general more than the other planets. Asteroids followed by large planets, in a number of first place is Jupiter compared to other planets it - a giant. The average distance from the Sun to 5,5 times the diameter by a factor, weight 334 times greater than Earth's, the time of his conversion is equal to 4.332 days or 11 years and 314 days. Jupiter has five satellites. Satursch average distance from the Sun it is 9 times greater than the distance of the Earth, while its total circulation - 10.760 days; diameter - 16.675 miles, the mass 92 times greater than Earth's mass, density is 1 / 1, the density of the Earth. Saturn has 8 satellites, more of them in magnitude closer to Mars, the characteristic feature of Saturn - a triple-ring freely rotating around the equator. Uranium - to the equatorial diameter of .6740 miles - has a mass of 14 times the mass of Earth. During the circulation it around the Sun - 30.686 days, the average distance from the sun 384 million miles, that is, 19 times greater than the distance of the Earth. Uranus has four satellites. Neptune - to our knowledge, extreme planet of the solar system - known since 1846. Its existence arising from the breach proper motion of Uranus. Leverrier calculated the position of the new planet: Neptune was found at that these scientists at the sky. The average distance him from the sun 30 times longer than the distance of the Earth (about 600 million miles) during treatment - 164.5 years, the diameter of 41 / 3, while the mass is 16 times larger than Earth. Neptune has a moon. Thus, the vast number of planets, in essentials similar to each other, rotates together with the satellites around the sun. They all make their way from west to east. In the same direction moves the sun and all the planets around their axes. Planet in its rotation ellipse are very close to the circle, the orbits of several of them are inclined to each other and to the equator of the sun. All this makes it very probable assumption is a common cause of planetary motion and their common origin. One of the greatest thinkers, Kant, based on this, created his famous theory of the origin of the planetary system, the vast majority of scientists accept it until now. According to this theory, planetary system, represented by the rotating mass of gas, due to cooling and reducing the mass of its divisions and formed the planets with their satellites; main body remained in the center.