do you know? Although the environment of Mars is very harsh, it also has four seasons!

There are also “four seasons” changes on Mars caused by changes in the point of direct sunlight. However, the environment on Mars is quite harsh.

What are terrestrial planets?
According to data, Mars is a terrestrial planet located in the habitable zone of the solar system. The terrestrial planets in the solar system are also called rocky planets, including Mercury, Venus, Earth and Mars. To put it simply, their common feature is that they are all planets made of rock as the main material.

Speaking of being similar to the Earth, in terms of size, Venus is actually the closest to the Earth and has an atmosphere, but the composition of the atmosphere of Venus is very different from that of the Earth, and Venus is famous for rotating in the opposite direction to all other planets.
From the perspective of other conditions, Mars is the most similar to the earth. The rotation of Mars is equivalent to 1.03 days of the earth, and the eclipse angle of Mars is about 24°, which is also close to the earth.
However, the climate and environment of Mars is equivalent to the desert area of the earth, which is very harsh compared to life on earth. Mars has a very thin atmosphere, which is not enough to provide the environment needed for the development of life.

Are there four seasons on Mars?
Interestingly, since the ecliptic angle of Mars is about 24°, and Mars is not too far from the sun, there are also “four seasons” changes caused by changes in the point of direct sunlight.

Compared with the earth, the “four seasons” of Mars are also divided according to the migration of the position of the direct sun point. Of course, this refers to the “four seasons” in the mid-latitude regions. For the equator and polar regions, their season division is not the same. same.

“Its summer and winter are usually referred to with reference to the seasons in the northern hemisphere.” Since the orbit of Mars is outside the earth (the so-called outer planet), the year of Mars is much longer than that of the earth, which is equivalent to about 1.9 earth years.
In addition, the orbit of Mars is more “flat” than that of the earth, so the length of its “seasons” is very uneven, and “spring and summer” are about 1/3 longer than “autumn and winter”. And the difference between different seasons is not big, mainly due to the difference in temperature.
In terms of distance, the moon, Venus, and Mars are relatively close to the earth. But since humans observed Mars through telescopes and learned that Mars is also a planet, the longing for Mars immigration seems to have continued.

Unfortunately, so far, humans have not found traces of life on Mars. So slowly, human beings changed from fantasizing about Martians visiting the earth, to earthlings visiting Mars.
This is also reflected in film and television dramas. The movie “The Martian” tells the story of astronauts trapped on Mars. In the movie, the astronauts also planted potatoes on Mars, realizing the ecological chain of human beings on alien planets.

What are the celestial phenomena associated with Mars?

Mars is no stranger to astronomers.
For example, the astronomical phenomenon of “Mars and the moon” is quite well-known. According to some data, this refers to the astronomical phenomenon that occurs when Mars and the moon move to the same celestial longitude. At this time, the scene of Mars and the moon can be seen on the earth.
Seen from the earth, Mars is very bright in the night sky, close to -3 magnitude at its brightest, which is very suitable for observation, and Mars is close to the earth, and when weather conditions permit, it can be viewed with a small astronomical telescope.
“When Mars opposes the sun, the brightness of Mars will reach the brightest level, and Mars opposes the sun about once every 780 days.” He said that there are many astronomical beauties in the celestial phenomena related to Mars.
For example, the main celestial phenomenon that can be seen on Mars is when Mars is close to other planets or the moon. For example, the “two stars with the moon” that once appeared in the night sky looks like a cute smiling face, which has attracted the attention of many people.