How to fly artificial earth satellite.

<P> Technology Channel (http://tech./) Message: Space is the vast space beyond Earth's atmosphere, sometimes referred to as space. .Although the Earth's atmosphere extends upward of 2,000 kilometers, 100 kilometers above the customary space counts as space. .People to space is divided into several regions outside the Earth's atmosphere to the Earth's magnetosphere reach of space called planet Earth space, Earth planet outside our solar system space interplanetary space, solar system, the amount of line outside the international space interstellar space for the universe .. . </ P> <P> space vehicle into space is the "ladder." ."Ladder" frame up, man will perform on stage in space, a variety of magnificent repertoire. .First, perform, is man-made earth satellite, which fly around the earth planet space. . </ P> <P> the introduction of the repertoire of artificial earth satellites, we want to artificial Earth satellites themselves have a basic understanding. . </ P> <P> satellite is orbiting star running objects, the Moon is Earth's satellite, it is natural, follow this definition, people running around the Earth's man-made objects, such as spacecraft, called man-made earth satellite, .sometimes referred to as satellites or satellite. . </ P> <P> artificial satellite from the space vehicle, where access to the first cosmic speed as it curved around the earth, the earth just to offset the attractiveness of its centrifugal force it, so it can always .the same orbit around the Earth in inertial flight. . </ P> <P> artificial Earth satellite orbit plane formed by the satellite orbital plane is called, they are through the center of the earth. .As the Earth's rotation, the satellite orbital plane around the north-south axis of the Earth rotation. . </ P> <P> satellite speed just as the first cosmic velocity, the satellite orbits for the circular orbit, the radius of the length of the track, decided the size of the satellite orbit, that is the height from the ground. .Satellite speed higher than the first speed of the universe, less than 第二宇宙速度 when the elliptical orbit, its ellipse semi-major axis and semi minor axis by the ratio to decide, the greater the ratio, the greater the ellipticity, the speed .closer 第二宇宙速度. .Ellipticity is bigger, to 第二宇宙速度, then escape from the Earth orbit satellites along the parabola, while the gravitational effect of the sun around the sun, a man-made planet. . </ P> <P> satellite orbit plane and Earth's equatorial plane called the orbital inclination angle. .Angle is zero, the satellite orbital plane coincides with the Earth's equatorial plane, the satellite above the equator in the Earth is orbiting the Earth, when the track is called equatorial orbit; inclination of 90 degrees, the satellite orbital plane through the Earth's north and south poles, called the pole (ground) track .; angle greater than zero, less than 90 degrees, the satellite running from west to east direction and the Earth's rotation in the same direction, along the line for the track; angle greater than 90 degrees, the direction of the satellite and the Earth's rotation in the opposite direction, the retrograde orbit .. . </ P> <P> anterograde orbit satellite is 35786 km altitude, the satellite around the Earth around the same period and rotation period of the Earth, called geosynchronous orbit; such as zero inclination orbit from the ground point of view .the satellite as a fixed point on Earth above the equator, called the geostationary orbit; satellites orbiting the earth angular velocity and direction, and the angular velocity of the Earth around the sun and in the same direction, the satellite through the ground a little over the same time, called sun-synchronous .track. . </ P> <P> the height from the ground by satellite, can be divided into low, medium and high orbits. .</ P> </ p>.