"Zhu Rong" is going to pass the winter solstice in Mars!Why does Mars have the winter solstice?What do you look like in the four seasons?Experts revealed →

Author:Jiangsu News Time:2022.07.21

The Mars northern hemisphere where Mars is located in the "Zhu Rong" ushered in the winter solstice on July 21, and the northern hemisphere on Mars will also enter the coldest season of the year. Why does Mars have the winter solstice? What is the four seasons on Mars? Astronomical science experts of the Chinese Academy of Sciences revealed the secrets of you.

Like the earth, Mars is rotating around the sun while turning around the sun, so Mars also exists in day and night alternation and changes in the four seasons. When the direct point of the sun on Mars is located at the southernmost tip, it is the winter solstice. This year, it ushered in the winter solstice on July 21.

Wang Kechao, the science science director of Zijin Mountain Observatory of the Chinese Academy of Sciences: This is because Mars' self -rotating axis inclination is 25.19 degrees, which is very similar to the earth. During a track cycle, the direct point of the sun also moves back and forth between the north and south latitude. The direct point is located at the southernmost point, which is 25.19 degrees south latitude, which is the winter solstice of Mars.

Unlike the earth, Mars's revolution cycle is about 687 Earth Day, that is, the year of Mars is equivalent to about 1.9 Earth Year. Its last winter solstice was September 2, 2020. At the same time, Mars runs around the sun is much flatter than the Earth's orbit, so the four seasons on Mars are relatively uneven.

Wang Kechao, the science science director of Zijin Mountain Observatory of the Chinese Academy of Sciences: It is longer than the season of the earth every season. The centrifugal rate of Mars' revolving orbit is relatively large. For a short time, after a long time, Mars's winter is near the nearby point. Therefore, for Mars's northern hemisphere, it is about one -third longer than autumn and winter in spring and summer.

It is understood that the distance from Mars to the sun is about 1.5 times the distance between the sun and the earth, and the solar radiation energy has less energy, only 43%of the earth, so the Mars is also colder, and sandstorms are prone to occur in winter.

Wang Kechao, the science science director of Zijin Mountain Observatory of the Chinese Academy of Sciences: The temperature of Mars every season will be colder. Like the current winter, the temperature of the northern hemisphere in Mars can reach more than 100 degrees, which is colder than anywhere on the planet. Winter is a season when sandstorms break out. However, because Mars has less than 1%of the earth's atmosphere, its storm can only blow up the dust, and there is no such violent storm on the earth.