Fifty years after landing a man on the moon, why is America having so much trouble getting back to the moon?

In July 1969, the Apollo 11 spacecraft landed on the moon successfully. Armstrong took a small step to the moon and became the first human land on another planet.

In the following five years, NASA carried out 6 manned missions to the moon successively. It was not until the completion of the Apollo 17 lunar landing mission in 1972 that the whole lunar landing program came to an end. During this period, a total of 12 people landed on the moon and brought back 381.7 kilograms of lunar soil.

But after more than fifty years, the United States has never performed a manned mission to the moon, until recent years saw the moon on the agenda. The U.S. was followed, but after this plan always seems to have been frustrated, in 2004, President George W. Bush set three goals. One of them is in returning to the moon by 2020, the latest and building a lunar base.

However, the practical results are obvious. So far, there has been no success in establishing a lunar base, let alone returning a man to the moon.

On August 29, returning to the moon "Artemis" plans to first launch in SLS space launch and lustration. The last reason is the no. 3 engine failed, and in April there was already a fuel leak, again where the spill over the SLS rocket launch plan is the core of the United States back to the moon, so to speak.

The first flight was expected to take place in 2016, but it has been delayed 16 times due to political and technical glitches, and the development budget has ballooned from $10 billion to $36 billion today.

And the fact that the task is not a man on the moon, it's just a 42 days of lunar flight, SLS rocket carrying the Orion spacecraft are only three in the human body model and fluffy snoopy toys 39bet-kết quả bóng đá-kết quả xổ số miền bắc-kèo bóng đá -soi cầu bóng đá-đặt cược, this a series of operation seems to be some touch mind letting a person, clearly in more than 50 years ago will be finished every six manned moon landing, now restart the task should be more well, Why is it so difficult now to start with the basic task of orbiting the moon?

At this point, there is no doubt that many people will question the authenticity of the Apollo moon landing. Conspiracy theorists seem to have a lot of evidence to support the idea that the moon landing was fake, and that studio video technology was available at the time.

But in any case, the 1969 series of manned missions to the moon must have been real, because images can be faked, but the lunar soil brought back can never be faked.

c38f20908648d14dfa6f06b6312552edThe moon does not have an atmosphere, so the rocks on the surface of the moon are constantly subjected to cosmic weathering. Meteorites and micrometeorites continuously impact the moon's surface, cosmic rays and solar wind continuously bombard the moon, and the large diurnal temperature difference causes the thermal expansion and cold contraction of the rocks. These three processes work together to form the lunar soil.

The solar wind will inject the dust particles into the surface, reducing the mineral divalent iron ions into nano-metal iron particles, changing its electromagnetic and spectral characteristics, which is obviously not available on Earth, only to the moon to obtain such soil.

Apollo plan back to 381.7 kg in soil part is stored in the laboratory, part of this laboratory was distributed to all over the world, including China also got 1 gram of lunar soil, the soil is 0.5 g 1 g month was kept in the Beijing planetarium, member of the other 0.5 g to ouyang ziyuan's team, he has said, Just half a gram of rock has been used to publish 14 papers on the subject and to estimate where the sample was taken.

In addition to the lunar soil, the various countries of the Lunar Reconnaissance Orbiter can also photograph the landing site of the previous moon landing, see the abandoned landing module, rovers, and even astronaut footprints, so the authenticity of the moon landing is not in doubt, so why is the moon landing so difficult?

Actually not technology retreated, but need update iterative progress of science and technology, and technology has been out of date, before 6 times after landing on the moon, technology have continued to update iteration, the team also lost all over, after engineering proximate to build up is not easy, and now technology is doing enough to support us more safe, more sustainable and more cost savings, So everything from rocket launches to spacecraft has to be redeveloped and tested.

The entire Artemis program will carry out three manned missions to the moon. The SLS spacecraft will be hurtling toward the moon faster than before. This will require Orion's heat shield to be strong enough to withstand the heat from friction, so the first unmanned flight around the moon will be a test of it.

Unlike the previous Apollo missions, which can accommodate four astronauts, Orion will be manned by two astronauts in the orbital module and two on the ground.

After Artemis I, Mission 2 will take astronauts to lunar orbit, and mission 3 will be the second manned lunar landing since the Apollo program, which is expected to take place in 2025.

Another difficulty with Artemis is that it aims not only to land on the moon, as in Apollo, but also to set up a gateway space station in lunar orbit, through which astronauts would transit to the moon during the third manned mission.

The ultimate goal is to set up a base on the moon and prepare for a later mission to Mars. The mission has been delayed repeatedly, but the hope is that the Webb telescope, which was delayed for 15 years, is looking good.

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