Why didn't he return to the Moon?

This is the SLS rocket, that of the Artemis mission, launching it costs 4 billion dollars, it is a beast, the Artemis mission will launch this rocket that recovers absolutely nothing, everything is destroyed, it destroys 4 billion dollars to go to the environment of the Moon, that is equivalent to disintegrating without humans, obviously, a Virginia class nuclear submarine.

And if you don't like the comparison with a weapon of war, which I can understand, think that it is equivalent to the destruction of 10 hospitals with 200 to 400 beds, the calculation made with artificial intelligence based on hospitals in the United States that cost around 400 million dollars for those with 400 beds, 10 hospitals destroyed just to send a mission to the Moon with the SLS rocket.

You understand why they didn't return to the Moon after the Apollo missions, because they were even more expensive than this. What was best for the United States? Have hospitals and/or nuclear submarines for defense or a mission to the Moon? That is why they did not return to the Moon and that is also why the Soviets discarded the issue of the moon, because the Soviets also did something quite practical and that is that at the same time that the Apollo lunar missions were being sent, they sent for the first time an automated robotic mission.

They sent a probe that landed on the moon, moon-16, which collected samples and brought them to Earth, more or less what China did recently with the samples it brought back from the far side of the Moon, so there was no longer a need to send humans or send an extremely expensive mission to the Moon to obtain samples from the moon.

With these prices of NASA's SLS, conquering the moon is going to be between difficult and impossible, but things are going to get better over the years because SpaceX promises that its lunar launch system could reduce those costs to about 250 million, if everything goes well, up to about 500 million, depending on how the technology is developed.

A mission with SpaceX's Starship would involve between five to eight separate launches to send loads of fuel into space for the entire operation of going to the moon and back and yes, that is expensive and complicated, but the Starship also carries a much larger amount of cargo than any other ship ever built and in the future it is possible that refills will not be necessary for the Starship or any other ship that is sent or built, there is what is being developed which are space tugs, that is, ships which are basically an unmanned engine, they are a fusion engine, if possible, although the Russians had developed one that moved with solar energy and which are plasma engines.

Imagine that you have your Starship, you are an astronaut who is on board your Starship, they send you to space, there you ask for the assistance of a space tug, the space tug hooks up to your ship and pushes you at high speed, because some would reach more than 100,000 km per hour towards the Moon or Mars, you would not have to waste fuel or reload, once you reached Mars, because you would use the engines of your Starship to land and there on Mars or on the moon, then you would refuel normally.

It would not be necessary to load fuel in space, which is a somewhat complicated task and can also be a bit risky, but they are in it for the economic profitability that all these products that are being developed, researched and discovered in space will bring, therein lies the key to this conquest for the moon or Mars.

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