Visit back the lunar

Since the 70s, the American has never visited the moon which they had discovered again. As a symbol of the victory of the space competition with the soviet Union, the US surprisingly give up investigating the moon from the end of the Apollo Project. The question comes, why American stop visiting the moon, though it is a high valuable place for space investigation and more importantly, the US have all the experience, technology and capital to keep exploring the moon. Some of the experts say that it is due to the possible present of alien on the Moon. LOLL?

     
                                 LOL!!!!


 For some extend in terms of knowledge, this theory might be reasonable. However, if we think about it more in depth, it is ridiculous and lack of proving. 

In this case, I have some other predicted reasons for that which are more reasonable and realistic. 

First, it was financial issues. Do you think the US is that rich? NO!!! They don't have ultimate amount of money. The whole Apollo program which include seventeen times of operation and last for eleven year cost the US government 110 billion dollar, if we convert it into annual cost, it would turns out 11 billion annually. In other word, if the US stop the Apollo Program, they can produce approximately 90 more F-35 B stealth fighter which they are currently hard to afford, or six more Arleigh Burke class destroyer. So, if the lunar landing program is just there to win the Soviet Union, why don't the American use the money to make more arms so that their territory can be more safe. 

Second, the Apollo Program was such a high risk program. The US process too fast on the space discovering industries, there are too much advanced high- tech technology involved in the Apollo Program, as a result, the first operation of the whole program failed fatally, making three astronaut died. 

                               
                                                                    Apollo 1 explosion 

Also, the Apollo 13 aborted its lunar landing operation when it reach around the moon's equator due to major technical failure. Fortunately all the crew are alive because of their high skill of operating the space shuttle.

  
                                                              The Apollo 13 crew

Therefore, the US didn't want to face such a high risk to get something reward which are not quiet significant other then just fame. It is not worthy when it comes to letting people die.

Last but not least, it is the technology. The progress of the technology that are using to discover the space is too fast in the US at that time. Although American have the grasp of those high-tech, it is not solid enough, leading loads of failure. It makes the US become the highest risk country in terms of space program. The American want to reduce this phenomenal, more importantly reduce the risk of the space program in order to give confidence to the citizen of their space discover, they stop the whole program.