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Today, one of the main objects of study of space science is the planet Mars. A brief description will help you understand why it is so interesting. The main reason for the close attention of scientists is the hope of finding living organisms there, and hence the conditions for life. Over the past two centuries, there have been many problems on Earth: air, water and soil pollution, climate change, natural disasters, overpopulation, not to mention the threat of nuclear war. All this made people wonder if we can save the Earth for life, and if not, we need to look for a new home, which could be Mars.

General information about Mars

In our Solar system, Mars is the fourth most distant from the Sun, and the seventh in size. This is the nearest planet to us. Its approximate

the age is 4.5 billion years, like other planets in our Galaxy.

The planet got its name due to its bright red color. In Ancient Greece and Rome, red was associated with blood and war, so the name was given in honor of the God of war – Mars.

On closer inspection, the color of the surface of Mars is more orange than red. This shade occurs due to the high content of iron oxide. Scientists suggest that contact with oxygen led to the oxidation of iron, and strong dust storms eventually spread rusty particles across the surface.

The planet Mars brief description

The planet Mars brief description

Physical parameters of Mars

Mars is about half the size of Earth, with an average radius of approximately 3390 km (6370 km for Earth). Because of this, gravity is also much less – only 38% of the earth's. This gravity will seem more comfortable to a person, since the feeling of their own weight will decrease by 62%.

Like all the planets in our Galaxy, Mars orbits the Sun in an ellipse. A more elongated shape in comparison with the earth's orbit moves Mars a greater distance from the Sun, which affects several parameters of the planet. First, the length of the Martian year is about twice the length of the earth year (668 Martian days versus 365 earth days), despite the fact that the average day length of both planets is almost the same. Secondly, on Mars, there are large temperature jumps throughout the year: from +20 to -120°.

The great distance from the Sun makes Mars a predominantly cold planet. The average temperature is approximately -60°, which is why there is no liquid water on the surface, but there are large deposits of ice. Scientists hope that liquid water still exists, but is located deep in the crevices.

Structure Of Mars

Scientists can only guess what is the structure of Mars based on data from the orbiting spacecraft, study of meteorites and the experience of studying other planets. There is reason to believe that Mars, like Earth, has a three-layer structure:

The core. Most likely, most of the core is iron, sulfur, and Nickel. Knowledge about the density of the planet and the strength of the magnetic field allows us to think that the core of Mars is solid and much smaller than the earth, about 2000 km.

The mantle is similar in composition to Earth's. It may contain radioactive elements such as uranium, thorium, and potassium. Their decay heats the mantle to 1500°.

The crust of Mars is heterogeneous in thickness: the layer increases from the Northern hemisphere to the southern. It is mainly composed of volcanic basalt.

Comparison of the structure of Mars and other terrestrial planets

Comparison of the structure of Mars and other terrestrial planets

Surface features

Thanks to robotic vehicles sent to Mars, it was possible to make a detailed map of it. As it turned out, the surface of Mars is very similar to Earth. There are plains and mountains, crevices and volcanoes.

Plains.

Most of Mars, and especially its Northern hemisphere, is covered by desert low-lying plains. One of them is considered the largest lowland in the entire Solar system, and its relative smoothness may be a consequence of the presence of water here in the distant past.

Canyons.

A whole network of canyons covers

A. S. Pushkin is the greatest Russian poet. But I hope no one is challenging the view that he occupies an outstanding place in Russian literature and culture.

Every summer in June, thousands of people visit the Pskov land. They come here to the village of Mikhailovskoye to the wonderful festival of poetry, to see the places where he lived and worked.

Pushkin is always alive for us, he is the man we all know and love, the greatest of poets. Generations come and go, but Pushkin still remains. We are all grateful to Pushkin for each line of his works. Pushkin is not only a great poet for us. He is the perfect man combining brilliant talent with civil courage. His name is associated with our love for the Motherland, and the best in our life.

Hundreds of new concepts, hundreds of new words have appeared in the language in the years that have passed since his death, but not a single word of his poetry has become obsolete. Everything written by Pushkin continues to live. It has not become something of the past, it does not need any corrections and hardly needs commentary. His feelings and his views still correspond to our own feelings and views.

We admire the great world of Pushkin's poetry as a whole, each of us finding some special lines for ourselves, lines showing his sympathy and respect for his people. The reader cannot imagine his inner world without him.

тебе за письмо. Я Алекс. Я из Великой Британии. Моя страна тоже очень красивая.Столица Великой Британии - Лондон.В Лондоне много старых, новых домов и мостов. На улицах много машин.Ты также можешь видеть много интересных городов в Великой Британии,как Оксфорд,Кембридж, и другие.
Я живу в Оксфорде.Но я часто посещаю свою бабушку. Она живет в селе. Возле ее дома есть зеленый сад с белыми,красными,желтыми и голубыми цветами. В ее селе много зеленых полей и белых овец.
Я думаю Россия красивая страна , поэтому я хочу посетить ее следующим летом.
Твой Друг-По-Переписке
Алекс Гигс
Великая Британия