“We chose to go to the moon,” said President John F. Kennedy (1962), who wanted to reassure Americans during the Cold War that coincided with the times when the Soviets and the United States. Are vying for power in space, then 7 years later, the first humans set off to set foot on the surface of the moon, the closest neighbor in the universe to the planet Earth. It can be seen clearly with the naked eye until it has become a source of legend. folk tales and many more beliefs
As soon as the people of the Earth were able to defy gravity, they successfully planted a flag on the moon. Humanity’s hope for space was ignited and space technology advanced by leaps and bounds in just half a century. Not only that, but the discovery of water on the moon represents a new hope for the depleting resources on Earth. It also reminds us that there are still many mysteries waiting for the Earthlings to return to the Moon once again. But before a new lunar journey begins, Sarakadee Lite invites you to checklist. 10 Things to Know That Will Help You Know More about Earth’s One Moon
01 Humans began to study the moon since BC.
Although humans landed on the moon in 1969, there is clear evidence that ancient Greeks studied the moon since 450 BC. The oldest and most clearly documented theory of the birth of the moon is The theory of nature and the structure of the universe of “Aristotle”, an important philosopher of ancient Greece. of the moon, the earth, and the stars created by god Then there are new theories. to overthrow the many moons Until the 16th century, “Galileo”celebrityThe great science of the world was also the first to use telescopes to look for mysteries outside the world. And the first star he chose to explore was the moon, which Galileo Galilei found that the surface of the moon was not as smooth and beautiful as the naked eye. But the surface of the moon was filled with traces of craters and rough surfaces. and knowledge of Galileo’s study of the moons at that time became the origin ofcelebrityLater modern science
02 closest neighbor in the universe
At a distance of about 385,000 kilometers from Earth, the Moon is the closest neighbor to Earth and allows us humans to see details on the Moon more clearly with the naked eye than other stars. If 30 Earths are placed side by side, that is approximately the distance the Moon is from the Earth. or if measuring distance from the speed of light It will be found that light travels from the moon to Earth in just 1.3 seconds, so if something happens on the moon. It only takes a blink of an eye for us to be able to observe that phenomenon from the face of the earth.
03 diameter
The Moon has a diameter of about 3,476 kilometers, or about one-fourth the diameter of the Earth. Among the planets of the solar system, only Earth and Pluto have large moons. The moons of other planets are very small compared to the size of the planets. Mercury and Venus have no moons as satellites.
04 The moon turns only one side to the earth.
The Earth has one satellite, the Moon, which orbits the Earth in an ellipse. And it takes about 27.32 days to revolve around the Earth once, the same amount that the moon revolves around itself. That allows us to see only one side of the moon. is the side that is seen in the shape of a rabbit The other side of the moon cannot be seen from Earth at all. except to send a spacecraft to explore It’s called if we’re on the other side of the moon. We will never see Earth stars appear in the sky either.
05 The surface of the moon is dusty.
In South Korea’s first moon landing series, The Silent Sea, viewers will see astronauts leave their footprints on the surface of the moon very clearly. In addition, the scene running on the moon was scattered with dust. This is a scene that has been created in detail and with great care. It reminds us of the footprints of Neil Armstrong, the first Apollo 11 astronaut to set foot on the moon. It was Neil Armstrong’s apparent footprints on the moon that once led to controversy over whether the Apollo 11 mission was a US staging. atmosphere and humidity, so how can a footprint be formed? But there have been scientists come out to argue as well. Although people are aware that the surface of the moon’s crust is extremely hard, But the surface on the moon is covered with a relatively fine dust known as Regolith, causing humans, who wear rather heavy astronaut suits. When stepping on the moon, footprints can be created and imprinted clearly.
Indeed, in space without gravity, astronauts seem weightless. But on the moon, the gravity is about 6 times less than that of Earth, meaning humans on the moon will weigh 6 times less than on Earth (if 60 kg on Earth, only 10 kg left by the moon). Walking or running on the moon looks like light, floating, but that means they still have weight. And their weight, combined with the dusty surface, left footprints on the moon. Interestingly, those human footprints on the moon would have been imprinted for millions of years without the next generation of humans. Fly up and trample on the old footprints The reason is because there is no wind on the moon that would cause footprints to be covered in lunar dust.
06 There is no air and atmosphere on the moon.
With the moon having a low gravitational force different from the Earth. This makes even air unable to exist on the moon because the air molecules will completely float away. Even astronauts will find some kind of inert gas on the lunar surface. But it’s very thin, it’s almost like a vacuum. And it is believed that these gases come from particles expelled from the Sun’s atmosphere by the solar wind. or from the radioactive decay on the moon itself. But these gases won’t last long on the moon and eventually escape.
When the moon does not have air as a medium therefore there is no sound on the moon The only way to perceive noise is from the vibrations on the lunar surface. and with no air to diffuse light The sky on the moon looked dark. Starlight can be seen all day, all night, and there is no blue glow in the sky like what we see on planet Earth. Including no chance of morning or evening dim light like on Earth. The part of the moon that is exposed to the sun is therefore bright. and the part that is not lit will be severely darkened. allowing humans to see craters and mountains on the moon very clearly It also causes the loss of distance and close-up vision. Call it when on the moon A mountain several kilometers away would look as sharp as a few meters away.
If viewed from a telescope it is clear that the moon does not have an atmosphere. directly affects the temperature during the day The temperature of the surface that is exposed to sunlight and the surface that is not exposed to sunlight has an extreme temperature difference. The temperature at noon on the moon reaches a boiling point of about 127 degrees Celsius. By night, the surface of the earth quickly cools down into space because there is no air to absorb the heat. Causing the temperature to drop as low as -173 degrees Celsius, and most importantly, the absence of an atmosphere also means that there is nothing to protect against harmful light waves like X-rays. or ultraviolet rays coming from the sun Including being unable to prevent meteorites falling to the lunar surface as well
07 Sea of the Moon
Even if the moon has no rivers or seas But instead we hear the name of a large plain. The lunar craters are named for seas, lakes, and bays. The darkened plains Galileo gave Galileo the name Maria, meaning “sea” (singular Mare). On the moon is an area of molten rock that engulfed the surface of lava some 4 billion years ago.
The dark plains often appear on the northern hemisphere of the moon facing Earth. The name of the sea-related plains, such as the Great Plains Mare Serenitatis, means sea of smoothness It’s also named Lacus Somniorum, meaning Lake of Dreams. Further up the northern plains are traces of an ancient crater known as Sinus Amoris, meaning Bay of Love. The plain on the eastern moon’s equator is called Mare Fecunditatis, meaning sea of fertility. The area where Apollo 11 landed is known as the Sea of Tranquility or Sea of Tranquility. It is also a plain formed by lava flowing on the surface of the moon long ago.
08 Rabbit on the Moon
The hare on the moon, as imagined by astronauts, is actually a dark plain. According to observations, there are 22 plains like this on the moon, with the rabbit heading west of the moon. The rabbit’s tail is in the east. and the back of the hare is to the north Some people imagine that these plains are shaped like a man’s face on the belly and hind legs of a rabbit. This is evident during the full moon and before the full moon.
09 Man’s First Steps on the Moon
July 20, 1969 coincides with the date Apollo 11 landed a man from planet Earth for the first time on the moon, with Neil Armstrong being the first human to step on the mark. feet on the moon Along with the classic phrase “That’s one small step for a man, one giant leap for mankind) and since the landing of the spacecraft. Apollo 11 at that time, the Moon was still the only star in space that humans could reach, and today (1968-1972), a total of 12 humans, are the first humans to go. walk on the moon And if including all the astronauts who have traveled from the Earth to the moon counted 24 people after the success of sending humans to other planets. Space technology has advanced by leaps and bounds. Ready to change the goal of more challenging travel is to explore “Mars”
10 Discovering Water on the Moon
Many times the world has tried to find and proving the existence of water resources on the moon In the past, there have been surveys to find water molecules in craters in parts that are unable to reach sunlight. With temperatures as low as -173 degrees Celsius, compared to the bright side of the moon with a high surface temperature of 127 degrees Celsius, scientists do not expect that there will be water left on the bright side of the moon that is. sunlight There has also been no evidence that water can be found outside of those dark craters. Until October 26, 2020, NASA made a statement about the discovery of water on the bright side of the moon. The far-infrared telescope on SOFIA, or Stratospheric Observatory for Infrared Astronomy, a floating observatory that can travel anywhere on Earth.
SOFIA has discovered the characteristic absorption spectra of water molecules in Clavius Crater, one of the largest impact craters ever seen from Earth. and in the area where the sun shines This is clear evidence that water can be found even on the bright side of the moon illuminated by the sun. Further, the discovery confirms that there are 100 to 412 ppm of water on the moon, or equivalent to one bottle of water for every cubic meter of lunar soil, a discovery that challenges our understanding of the origin of water on bodies in the Moon. solar system One possibility may be that a water-carrying meteor crashed onto the moon. But another possibility is that it may be due to the merger between the hydroxyl groups. with another group of hydroxyl or from the hydrogen that comes from the sun Formed as water continuously on the surface of the moon.
The next interesting question is How does the produced water accumulate in such quantities? The possibility is that water molecules may be interfering with the grains of the lunar soil. and protected from the sun This discovery of water on the moon is therefore very useful for future human-moon landing projects, such as NASA’s Artemis project, which plans to send humans back to the moon again. The water on the moon could become an invaluable resource to fuel future spacecraft. or the day the water runs out of the world like in a sci-fi movie A moon that only discovered one molecule of water could be the only hope.