Call the nearest planet to the Sun!And the biggest planet of our system?And how many of them all, exactly?Not everyone immediately recall the answers to these questions.Even more will be surprised by those who sincerely believed that he knew such simple things.In fact it turns out that astronomy is very dynamic science and knowledge becomes obsolete incredibly fast: it would seem indisputable facts after a few years get their correction or addition.And the picture of the universe looks like a completely different way!
Call the nearest planet to the Sun
closest to the luminary planet is Mercury.It has a very small size, the rocky structure.And the proximity to the Sun causes unthinkable heat on the planet's surface.Mercury is the fastest planet in our system.The duration of its rotation around the Sun is 88 Earth days.
Now terrestrial planets name!The closest planet to the Sun, we have remembered.Tip: In addition to Mercury, has Venus, Earth and Mars are separated from other planets orbiting the star, the asteroid belt.Therefore they are called terrestrial planets.
all about the planet Venus
For its size, Venus is close to Earth, only slightly behind her.However, the atmosphere on this planet is very dense, ten times denser than Earth's, and incredibly hot.These features are characteristic of the atmosphere cause the delicate color of the planet, for which she was identified with the female deity of love.Interestingly, here last night as many as 243 Earth days, but shorter than the Venusian year - just 225 days.In addition, it is the only planet in our solar system that rotates counter-clockwise.Generally accepted explanation for this phenomenon is not.
Mars - the personification of war.
reddish body in the starry sky of many ancient peoples associated with fire and destruction.Actually, thanks to the sinister mind Mars got its name, becoming in Roman mythology, the god of war.On this planet, it is the highest mountain in the solar system.Mount Olympus is nearly 27 km in height, it is beyond our earthly Everest three times.The surface of Mars is covered with a variety of highly canyons and ridges.Some of them are so bizarre shape that people who watch them with a telescope, not just in a hurry to declare an artificial origin of these formations.
Jupiter and Saturn - the giant planets
That's right - these celestial bodies are the real giants among the planets.Jupiter is more massive than the Earth 318 times.Interestingly, it is the accumulation of gas.The spacecraft to land on the planet impossible, since it has no solid ground, and is composed mainly of hydrogen and helium actives.Saturn is greater than the mass of the Earth is about 95 times, although he, too, is not a solid body in an earthly representation.It is famous for its rings, which are clearly visible around the planet.They are formed from the dust and small satellites orbiting in an orbit.Only a more or less large satellites of Saturn has 62.
Uranus - the planet with many moons.
Of all the planets Uranus is the easiest.Its interesting feature is that it rotates as it lay on its side.
Neptune - a planet of the Solar System
mass of Neptune is 17 times greater than Earth's.This density is also higher than the earth's.Neptune has thirteen moons, the largest of which is called Triton.It is the only planetary companion in our system, which moves in the opposite direction.
And what the body completes the series?
And now ask you, the last planet orbiting the Sun, call!The closest planet to the Sun, the gas giant planet with a ring of Neptune's largest moon, and we have already named, but as is the case with the boundaries of our solar system?If you think that this is Pluto, you are wrong.A few years ago the answer would have been true, but not today.After the discovery of Pluto, some others are not inferior to him in the amount of bodies, but not moving on a clear planetary orbit, the scientific world was a question: "What, in fact, rightly called a planet?"Consensus was as follows.The planet must:
1) apply in the orbit of the Sun;
2) be of sufficient size to under its own gravity to take a spherical shape;
3) to clear the way for the orbit itself, and it does not go under the influence of other bodies.
Alas, Pluto does not meet these parameters, as well as many bodies in the so-called Kuiper belt, opened on the outskirts of the solar system in the past decade: Eris, Sedna and others.
