Who will help me write an article? About Martian Text!

Fire.

In the quiet of the night, when you look up at the bright starry sky, do you know which one is Mars?

Mars is the fourth planet in descending order from closest to the Sun. To the naked eye, it is a striking bright star of fiery red. It moves slowly through the stars, and Mars is sometimes retrograde when viewed from Earth.

Mars has a darkest visual magnitude of about 1 5, and at its brightest it is brighter than the brightest star, Sirius, because the Earth and Mars are in their respective orbits, and the distance between them is always changing. Mars glows like fire, the brightness is constantly changing, the position is uncertain, and it is confusing, so the ancient Chinese called Mars "fluorescence". In the mythology of ancient Rome in the West, it is imagined as the god of war "Mars" (Mars) who is covered in armor and covered in blood, that is, the god of war (Ares) in Greek mythology.

Ares came from a noble background, his father was the god-king Zeus, and his mother was Hera, the queen of heaven. The symbol of Mars in astronomy is a combination of Mars's spear and shield.

Mars has many characteristics that are similar to Earth's. It is 227.94 million kilometers away from the sun, about times the distance between the sun and the earth; The angle between the axis of rotation and the orbital plane is 24°, which has the same annual variation as the earth; It rotates more than half an hour more than the Earth, with 24 hours, 37 minutes, 22 6 seconds. Therefore, the length of day and night on Mars and Earth is basically the same, but the period of revolution around the sun, one year of Mars is almost equal to two years of Earth.

Because Mars is farther away from the Sun, one revolution is 687 days. Mars is about half the diameter of Earth; The volume is less than 1 6 of the Earth;The mass is only 1 10 times that of the Earth;The Martian atmosphere is much thinner than Earth's, and its main components are carbon dioxide (95), nitrogen (3), and very small amounts of oxygen and water.

The average temperature on Mars is -23, and because the Martian atmosphere is thin and dry, it has a large temperature difference between day and night, much larger than the temperature difference on Earth. Due to the low temperature and low pressure on the surface of Mars, the atmosphere is roughly saturated with carbon dioxide and water, and as soon as the temperature drops slightly, carbon dioxide and water vapor will condense. There is very little water in the Martian atmosphere, and scientists estimate that if all the water ice on Mars were melted into water, it would only form a 10-meter-deep ocean on the surface of Mars.

Compared to the choppy oceans on our Earth's surface, the amount of water on Mars is insignificant.

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