What are the mysteries of space?

The mystery of space:

1. The sunset on Mars is blue.

For us, we are used to the beautiful orange-red scenery of sunset, but on distant Mars, the sky color of sunset is usually blue.

This is because Mars is farther away from the sun, and the atmosphere of Mars is thin, and 96% of the air is carbon dioxide. The atmosphere absorbs the red color spectrum in the sunlight, which makes the color of the sun seen by Mars different from that on the earth. I hope I can know this interesting cold knowledge.

2, 14 trillion giant reservoirs with global ocean water.

In 211, astronomers discovered a huge reservoir floating in the air, surrounded by water vapor floating around a quasar, but they are not very common in this special place. It is understood that the reservoir has about 14 trillion oceans of water on the earth. Although it looks exciting, scientists say that quasars in the reservoir are about 12 billion light years away from us, so it is impossible to realize the so-called "immigration plan" at present.

3. Planets whose temperature can reach 1 degrees Celsius.

In 217, KELT-9b, the hottest planet, was discovered. It is a planet in Cygnus, which is about 65 light years away from the Earth. So how high is the temperature of this planet? According to scientists' research, the average temperature has reached 4,316 degrees Celsius, and the highest temperature can reach an astonishing 1, degrees Celsius.

The main reason is that this exoplanet will receive more radiation and heat when it orbits the star, which makes it very hot. It is precisely because of the high temperature that scientists infer that this KELT-9b may completely evaporate in the future.

4. There are more than 4,5 tons of garbage in space.

Although we often feel helpless about too much garbage on the earth, you may not know that there are also a lot of nasty garbage in distant space. Of course, this is also related to us humans. The debris, paint and dust of satellites, which are as big as the wreckage of the whole spacecraft, have a serious impact on the whole outer space environment.

According to a related statistic in 212, more than 4,5 tons of space junk remained in orbit. The harm of space junk is greater than that of the earth to human beings, so now national space agencies pay special attention to this aspect!

5. The total number of stars in the Milky Way is about 2 billion.

No matter how old we are, each of us may have counted the stars in the night sky, and it sounds really naive to try to count how many stars there are, because it is impossible.

According to astronomers' research, there are only about 6, stars visible to the naked eye, but if the number of stars in the whole galaxy is about 2 billion, I'm afraid no one can say clearly how many there are in the whole universe.