What do you know about the solar system. ؟
Solar system in space (400) kilometres per second
The solar system:
Solar system consists of the Sun and all the happenings around objects, including planets, moons, asteroids and comets. Our planet Earth is the third planet away from the Sun. The solar system is a system of planets and systems containing the stars spin around planets and other objects.
The bodies of the solar system: there are many objects in the solar system are classified into several different categories, some of these categories are less obvious than others, depending on the classification of objects: encyclopedia
One star: the Sun. The Sun is one of more than 200 billion stars in our Galaxy the milky way, the Sun is the center of our solar system, and the 101.31% of its mass.
Planets:--nine, respectively increasing distance from the Sun: Mercury-Venus-Earth-Mars-Jupiter-Saturn-Uranus-Neptune-Pluto.
Satellite: satellite or natural satellites are objects smaller than the planets spin around.
Satellites: these are small bodies manufactured and launched by and around planets, especially Earth.
Space industrial residues: residues or wreck satellites, vehicles, man-made vsaaeh stations, and these are usually around the Earth.
Dust and other small particles orbiting planets.
Asteroids: objects which formed the planets, which are objects smaller than the size of the planet formed early in the solar system is non-existent now. The term is sometimes used to refer to meteorites and comets or particles of diameter less than 10 km
Meteorites: millions of Rocky objects of different shapes and sizes in orbit around the Sun between the orbits of Mars and Jupiter, are located along its orbit, thus forming what looks like a belt and this is called the orbit of the asteroid belt.
Comets:
Comets are celestial irregular shape, consisting of blocks of ice, rocks and gases, has suggested that the astronomer Fred Whipple, Whipple 1950 description shows that comets icy balls dirty "dirty snowballs" they mostly consist of ice mixed with gas and dust and rocks. And vary in their characteristics on the planets, except for irregular forms compared with spherical planets in General, their orbits very elongation so that varies its location relative to the Sun is very large in terms of proximity and distance compared with the orbits of planets are elliptic or circular likeness.
It was agreed to divide the comets to main sections depending on the length of each cycle around the Sun and those sections are:
1. comets long Long-period comets session so long orbiting the Sun period of over 200 years
-Comets Short-period comets session short so long orbiting the Sun period less than 200 years. Halley, Halley is one cycle around the Sun during the 76 years is of this type. While Comet Hale-Bopp and Hale-Bopp which passed over Jordan in 1997 and captured many wonderful pictures and acquired some fame as in figure (1-1) (photo by colleague Mohammed Odeh-JAS) this Comet is the first long session with one cycle around the Sun in 2400 years.
The comets when they exist in orbit away from the Sun because its opaque and non-luminous objects, but with the proximity of the Sun begins the dark material by evaporation and sublimation and disintegration. Wet vacuuming this article behind a comet by the solar wind, a very long trail extends behind the Comet nucleus (Figure 1-2), where this article unlike the sunlight falling on them, see.
And this direction is always opposite tail, the comet's arrival to this stage is understandable as the perception of the aura surrounding the nucleus and nucleus, the Trail extends to millions of kilometres and appear clear in the shape of a comet parts (1-3), which represents the image of Comet West, which appeared in 1975. With the rotation of the Comet and its distance from the Sun gradually disappearance tail starts. The Comet was composed of more than one tail, these knots are:
Ionic tail (invader) Plasma Tail:
The tail consists of mtainh gases and electrons and colour to Blue italic because Tyne carbon monoxide which gives a sharp blue as shown in the picture, this extends the tail straight up to great distances very close to the astronomical unit equivalent to 150 million km behind the Comet nucleus in the opposite direction of the Sun.
Tail Brown Suger Dust tail:
This represents the tail dust granules that are brushed with solar winds behind the Comet, so its color is whitish or yellowish tilted, and the tail is brown Suger view shorter tail and departs on an arc to the heavier dust particles of ionized gas.
And keep these behind the comet dust particles composed of particles, dust, ice and other materials had foregone or evaporated by the Comet approaches the Sun, this table of the particles around the Sun in the orbit of the Comet itself. And frees all his Comet near the Sun a lot of gas and dust in orbit. Over time and after several visits these article in orbit the Comet itself and pass several phases of developments which ends with a broad and round little density. This orbit Earth reflects at least once during their movement around the Sun in its orbit. Which may reflect twice as shown in figure (1-3). This crossing is the process that generates the phenomenon of meteor showers are associated with them as we will see later.
They were introduced after
