Practically all planets in the solar system have satellites. The exceptions are Venus and Mercury. The satellites of the planets are constantly being discovered. To date, there are about 170 of them, including those belonging to dwarf planets, as well as those that are "patiently" waiting for their official confirmation.
The sun holds its objects by gravity. Small terrestrial planets circulate next to this yellow star, behind which is the asteroid belt. Next are the giant planets, which do not have a solid surface and consist mainly of hydrogen and helium. And the second asteroid belt completes the harmony.
The satellites of the planets of the solar system are diverse in shape, size, some of them even have their own atmosphere. Most of them were formed from gas and dust. Known not only satellites of the planets, but even asteroids - as a rule, they are very tiny. The largest in the solar system is Ganymede - the "moon" of Jupiter. It is so huge that it has to have its own magnetic field. by the mostIo is considered mysterious. On this satellite, constant volcanic activity with eruptions is observed. However, the surface of Io always remains smooth - lava fills the craters and levels the firmament, as if glazing it. Jupiter is a unique planet. Together with its numerous satellites, it forms a solar-like system.
No less many "moons" are owned by other giant planets - Uranus and Neptune. Saturn has over 50 known moons. One of them - Titan - is second in size only to the leader Ganymede and has its own atmosphere, consisting of nitrogen. They say that if it is worth looking for life in the solar system, then only on it. Methane rains often fall on this satellite, and on its surface, perhaps, there are real seas, however, also from methane. However, Titan stubbornly keeps all its secrets behind opaque clouds. Triton, a satellite of Neptune, is also noteworthy. It also has an atmosphere. Craters, polar caps and even real gas geysers were discovered on it. In the solar system, Triton is the only satellite whose direction of rotation is opposite to the rotation of its planet. Miranda cannot be called a beauty. This moon of Uranus seems to be made of various pieces, but it is distinguished by a variety of mountain landscapes.
The satellites of the terrestrial planets are no less curious and original, although they are presented in much smaller numbers. The Earth is the only body inhabited by living organisms in the solar system, has asmoon satellite. Its diameter is equal to a quarter of the Earth's. The Moon is the largest satellite relative to the size of its planet. The Earth has no others, except for artificial ones. The "Red Planet" Mars is accompanied by two natural satellites of small size and irregular shape - Phobos and Deimos. They are always turned to their planet by one side. By the way, there is a legend that life on Mars did exist, but reliable evidence has not yet been found or published. Satellites of the planets are absent from two planets of this group - Venus and Mercury. They are too close to the Sun, most likely their "moons" burned out.
You can find out how this or that planet looks from a satellite using a special service. However, in most cases it will only be a simulated image. After all, so far man has managed to visit only one satellite - the Moon.
