There were no rocket launch stations built on the moon, so why was Apollo 11 able to return to Earth safely?
Many people know that as early as fifty years ago, that is, on July 21, 1969, the United States Apollo 11 helped mankind to achieve the first manned lunar mission, when there were 3 astronauts on the mission, including the pilot of the command module, the pilot of the lunar module and the commander of the command module, because a person needed to continue to fly around the moon when landing on the moon, so the astronauts who landed on the moon at that time were Aldrin and Armstrong.
At this time, it is also necessary to question the authenticity of the US moon landing, after all, the mainland has also received 1 gram of lunar soil samples donated by the United States, although there are some differences in composition and soil brought back from the moon sample by the mainland, but this is mainly because of the different locations of the samples.
In addition, there is indeed no rocket launch station on the moon, but at that time, only the lunar module landed on the moon, and the gravitational pull on the moon was much smaller than that of the earth, so the lunar module did not need the rocket thrust of the earth to leave the moon.
Moreover, when the astronauts enter the lunar module again to return to the earth, they will also leave the heavy objects they carry on the moon, especially those things that are not used, and even the fuel of the lunar module is only enough to enter the lunar orbit, rather than being able to use it to return to the surface of the earth, which depends on another astronaut who performs a mission in the lunar orbit to meet it!
The United States has landed on the moon six times, what have the astronauts done? What are the differences in landing locations?
Did the United States also have a manned lunar mission fail?
The 6 manned lunar missions of the United States all belong to the Apollo plan of that year, but not every manned lunar landing mission has been successfully implemented, such as the third manned lunar landing spacecraft of the plan, that is, Apollo 13, just 2 days after the launch, the spacecraft's service module accidentally exploded with oxygen tanks!
Needless to say, the severity of the incident was drastically reduced in power and oxygen, which were essential for flight, and the astronauts on the spacecraft had no choice but to save themselves through the lunar module, but in the end they overcame many difficulties to return to the ground.
In addition, there may be people who do not understand that in fact, when Apollo 1 was tested, a sudden fire caused the death of three astronauts, they were the pilot Roger Chaffy, Edward White and the commander of the command Virgil Gleason, because the fire location is the command module, and the day is not the time of the official launch, but through the simulated launch to test whether the internal power supply can keep the spacecraft running normally.
The landing positions of the six manned moon landings are all on the front of the moon!
In addition to the aforementioned Apollo 11, which achieved a soft landing on the moon, five other manned missions that successfully landed on the moon were Apollo 12 (November 19, 1969), Apollo 14 (February 5, 1971), Apollo 15 (July 30, 1971), Apollo 16 (April 21, 1972), and Apollo 17, which landed on the moon on December 11, 1972.
Of course, from the perspective of scientific expeditions, the six landings usually do not choose the same location, because the purpose of each mission is different, and if there is anything in common, it is that the locations of these landings are actually located on the front of the moon, that is, the side that has been facing our earth.
The objectives of the six lunar missions are different, so what did the astronauts do?
Specifically, Apollo 12 completed the precise landing goal, Apollo 14 completed the landing of the lunar rickshaw invented by humans on the moon, Apollo 15 let the first manned lunar surface vehicle leave footprints on the moon, Apollo 16 allowed humans to know more about the central plateau that was not previously understood, and Apollo 17 allowed humans to stay on the moon for up to 75 hours!
Of course, astronauts can't do nothing after landing on the moon, just walk around and look around, after all, the cost of a lunar mission is not low, and there is also a risk of accidents, so every time the astronauts on the moon, they will perform some things according to the mission objectives.
In the case of Apollo 11, for example, astronauts placed instruments that could observe lunar earthquakes after landing on the moon, that is, "lunar seismometers" and laser reflectors. In addition, the astronauts also collected a number of samples on the moon, including soil and rocks on the moon, which added up to 22 kilograms. When the astronaut leaves the moon and returns to orbit around the moon, the lunar module will be abandoned after docking with the mother ship, and when it returns to Earth, only the command module will be left, because the service module is also thrown away in the process.
Does the fact that the United States has not landed on the moon again in recent decades mean that Saturn 5 technology has been lost?
Indeed, as of now, there is no second country astronaut on the moon, but in the past few decades, including the United States has not carried out manned lunar missions, but this is mainly to establish a base on the moon is too difficult, including the current level of spaceflight in the United States is also difficult to achieve, if it costs a huge cost, but also let astronauts take risks, but can not achieve higher purposes, it becomes not much meaning.
As we all know, in the past, the Apollo series of missions to achieve manned moon landing were launched by the Saturn V carrier rocket, but its last launch record was in 1973, when the Skylab space station was sent into low-Earth orbit through this carrier rocket.
However, the Saturn V carrier rocket has long been out of production, and data show that it was shut down in 1970, and the space launch system, the so-called SLS system, became its successor.
It is undeniable that the thrust of the Saturn V carrier rocket is indeed very large, reaching 3408 tons that year, and some people do speculate whether the blueprint of the Saturn V was lost, so that the Production Line was terminated, so that the United States has not landed on the moon again for so many years. However, NASA has long publicized rumors that the blueprint of saturn v is still well preserved, but it does not specify which space center it is placed in, and it is impossible to recreate saturn v in the future.
The reason is not difficult to understand, after all, the original launch site of Saturn V has long been rebuilt, involving thousands of rocket manufacturers, they were gone as early as the time of the production line shutdown, if the Saturn V is rebuilt, it means that it will take a lot of manpower and material resources to build. Moreover, Saturn V is after all a product of decades ago, and today's US space technology is more advanced than it was then, and since there is a better space launch system, there is naturally no need to rebuild Saturn V.