It goes without saying that there is no atmosphere in the chest of the moon. If you go here, you have to take the air to breathe from the earth. When the flag is hoisted, the flag is fixed due to lack of wind. Of course, the moon does not have an atmosphere at all. The atmosphere that has a very thin atmosphere is called the exosphere. Since the number of gas molecules in the exosphere is very small, it is safe to say that they do not collide. These molecules hit the moon's chest after moving in a curved path like a cannonball. Where the Earth has 100 billion molecules per cubic centimeter above sea level, the Moon has about 100 molecules per cubic centimeter and the mass of the Moon's entire atmosphere is about 25,000 kg . Apollo astronauts discovered the presence of argon-40 , helium-4 , oxygen , methane , nitrogen , carbon monoxide , and carbon dioxide. Meanwhile, sodium and potassium have been found from Earth through spectral observation. Radon and plutonium were found by sending spacecraft into orbit. Helium has also been found there in recent times. One of the sources of the moon's atmosphere is the interior of the moon. Different types of gases are released through earthquakes and radioactive decay. Light gaseous particles are almost immediately lost in space. And the gas coming out of the interior of the moon to fill the gap. Sunlight , solar storms, and the tiny particles of hope from space hitting the lunar surface also emit a variety of gaseous particles. One part of it merges into space and the rest remains in the moon's thin atmosphere or exosphere. Electrons are emitted from these gaseous particles by the sun's ultraviolet rays, which in turn cause the gas molecules to become ionized. These charged particles can rise more than 1 mile in the moon's sky. The opposite happens at night. In the absence of sunlight, these charged particles receive electrons from the solar storm and descend to the bottom. This flow continues day and night. Which creates a lot of aura like the sunset of the earth. This is called Lunar Horizon Glow. Apollo astronauts have seen the scene several times.