Mars - a solid terrestrial planets of small diameter (of 7 thousand. Km), which gives an abundance of iron red.It was named in honor of the Roman god of war.This outer body has a similarity with the Earth in terms of the changing seasons.The atmosphere consists essentially of nitrogen, hydrogen, neon, oxygen and argon.The main attraction - it is an extinct volcano Olympus, width - 6 thousand. Km and height - almost 27 kilometers.In addition to a weak magnetic field, there is one more feature: there are bacteria on Mars, which is the result of life at once decomposing methane.
These conclusions were reached after the discovery of clusters of gas a large area.The temperature on the planet - from +20 to -153 degrees.Even the frozen air and the ice is.And similar to the day of the earth, more than only 50 minutes.This planet has always been a subject of controversy and debate.Scientists have tried to find out how many moons of Mars, whether life, whether there are bacteria that can be transferred back to exist in those circumstances, whether there ever higher civilization.In the last century there was a mass of not always explainable discovery, but the new interesting facts in the history will still abound.
Do moons of Mars
This planet has 2 satellite, which became known since 1829.Until that time, many astronomers have wondered about how much Mars satellites.In 1610, Johannes Kepler suggested that the two of them.According to his theory, the amount of such increases exponentially when the removal of the planets from the sun.
Later, the writer Jonathan Swift in a chapter of "Gulliver's Travels" wrote about the presence of two "moons."After it became known as Mars satellites, one of them on Deimos, in honor of Swift was named a crater.He was not the only person to assume the presence thereof: Voltaire went down in history not only as a talented writer, but also as the "owner" of the eponymous crater on Deimos.Incidentally, these two holes located close to each other.
what to call and why
largest space object is orbiting the "red planet" - is Phobos.His name, meaning "fear" is also taken from mythology.He is the son of Mars and Venus, and therefore could not call him otherwise.Form his asymmetrical, it is not the same as that of most satellites.
This planetesimal (large stone) on its surface has only one "vista" - a crater Stickney, who was named after the wife of Asaph Hall - the discoverer of the object.Deimos - Mars satellite number 2 - much less his "neighbor".Also unexplained solid grooves, this shapeless stone has craters Swift and Voltaire.
What is the trajectory of Phobos and Deimos
They differ in their orbits.Phobos time to circumnavigate the planet 2 times per day, moving closer to her.There is speculation that he was in danger: he may in a few thousand years under the influence of gravity on Mars would collapse and break.Scientists are trying to figure out its mass, but according to the calculations turned out that it is very small.But how is this possible?There was a hypothesis that there is a vacuum inside.Deimos, on the contrary, could ever "run away" from the planet, t. To. Progressively moving away from it.This is also due to their size: Deymos has a diameter of 13 km and Phobos approximately 10 kilometers longer.
As they appeared
natural satellites of Mars are composed mainly of regolith (rock fragments) and ice, whose composition is not the same as the "Red Star".Their origin is still not a specific official version.There is a hypothesis that there was one asteroid crashed into two chunks.They say that Mars pulled them to his side of Jupiter.They are younger than the planet itself.
Phobos, in connection with the assumption of emptiness inside, found the legend that he was not a natural body.This spaceship created by higher intelligence.To check this, you need a lot of time, money and effort.It is necessary to investigate its soil, depth and exact composition.
Now you know how many moons of Mars, and that they nearly look like.
