What kind of sound wave did NASA use to communicate with the astronauts when they were "on the moon?"

Question

In listening to the audio of the so called moon landing, why were there no interference and delay with the communication? The astronauts and NASA responded almost immediately. We're talking almost 250,000 miles apart and also another factor...The Van Allen Belt.

Answer 1

They communicated by radio. There are no sound waves on the moon, no atmosphere. Radio waves travel at the speed of light. They ere out of communication when they were on the back side of the moon where the radiowaves could not go to.

Answer 2

The moon is just 240,000 miles. Thus, the latency of radio signals between the Earth and the Moon is 240,000/186,000 or just 1.29 seconds. If you listen to the tapes, you'll hear that delay.

The existence of radio telescopes proves that the Van Allen radiation belts have no effect on radio communications.

1) Twelve 12 American astronauts have walked on the moon.

Apollo 11: Neil Armstrong & Buzz Aldrin
Apollo 12: Pete Conrad & Alan Bean
Apollo 13: << failed to land on the moon >>
Apollo 14: Alan Shepard & Edgar (Ed) Mitchell
Apollo 15: David Scott & James Irwin
Apollo 16: John Young & Charles Duke
Apollo 17: Eugene (Gene) Cernan & Harrison Schmidt


2) Why haven't we been back?

a) American astronauts visited the moon on six occasions.

b) The "moon race" was an extension of the cold war. It was mostly about national prestige. We got there first and achieved our primary objective. There was some good science: surveys, measurements, sample collection. But it was mostly about being there first. Once we achieved our primary objective, there was no political will to go back. There still isn't. Perhaps, if we discover He3 or something else valuable, there will be.

c) I used to travel to Crested Butte, Colorado every year to ski. Because I don't go anymore, does it mean that I never went?


3) What about the Van Allen radiation belts? Wouldn't it have killed the astronauts?

The existence of the Van Allen radiation belts postulated in the 1940s by Nicholas Christofilos. Their existence was confirmed in *1958* by the Explorer I satellite launched by the USA.

The radiation in the Van Allen radiation belts is not particularly strong. You would have to hang out there for a week or so in order to get radiation sickness. And, because the radiation is not particularly strong, a few millimeters of metal is all that is required for protection. "An object satellite shielded by 3 mm of aluminum will receive about 2500 rem (25 Sv) per *year*."

"In practice, Apollo astronauts who travelled to the moon spent very little time in the belts and received a harmless dose. [6]. Nevertheless NASA deliberately timed Apollo launches, and used lunar transfer orbits that only skirted the edge of the belt over the equator to minimise the radiation." When the astronauts returned to Earth, their dosimeters showed that they had received about as much radiation as a couple of medical X-rays.


4) The U.S. government scammed everyone?

In 1972, there was a politically motivated burglary of a hotel room in the Watergate Hotel in Washington, D.C. There were only about six or eight people who knew about it. However, those people, including Richard M. Nixon, the President of the United States, failed to keep that burglary a secret. It exploded into a scandal that drove the President and a number of others from office.

If six or eight people couldn't keep a hotel room burglary a secret, then how could literally thousands of people could have kept their mouths shut about six faked moon landings? Not just one moon landing, but six of them!


5) What about the USSR?

Even if NASA and other government agencies could have faked the six moon landings well enough to fool the general public, they could NOT have fooled the space agency or military intelligence types in the USSR. The Soviets were just dying to beat us. If the landings were faked, the Soviets would have re-engineered their N-1 booster and landed on the moon just to prove what liars Americans are. Why didn't they? Because the landings were real and the Soviets knew it.


6) Why does the flag shake? Where are the stars? Who took the video of Neil Armstrong?

On the subject of stars, take a look at the first link. Sorry, but there *are* stars in that photo. For the rest, visit "badastronomy" and "clavius". They deal well with all of the technical questions.


7) Finally, please tell us what you would accept as definitive evidence that the six moon landings were real. Is there anything?

Answer 3

There is interference and delay, quite definitely.

The audio was recorded in mission control. A simple exchange would go like this:

A controller asks a question. 1.3 seconds later (the time it takes for radio waves to get to the Moon) the astronaut hears the question and replies. 1.3 seconds after that (2.6 seconds after the controller asks the question) mission control receives the reply. The controller replies immediately.

I don't know what audio you are listening to, or what you are expecting to hear, but I can assure you that that is exactly how it happens. Sometimes the astronaut interrupts. Sometimes you even hear the question from the controller repeated when the astronaut keys his mike to say something while still receiving the transmission. Frequently the delay causes both to talk at the same time and there is a moment's confusion as they try to work out who should speak and who should wait.

And the van Allen belt is irrelevant. Dr James van Allen himself states quite categorically that they are no barrier to manned space flight, and he opposes manned space exploration as a waste of time and excessive risk when automated probes can do it for us.

Answer 4

Listen again. There is delay. It is sometimes obvious. How long does a radio signal take getting to the Moon? It's 25/18 second, or about 1.3 second.

Answer 5

Communications to/from the Appolo missions (and any space mission) were done by radio waves.

The Moon is about 1 light-second from the Earth, so delays due to that effect aren't terribly noticable.

Answer 6

They were communicating using radio waves which travel at the speed of light. It wouldn't have much of a delay.

Answer 7

It was radio waves, not sound waves. Sounds waves don't travel through a vacuum.

What about the belt? It doesn't block radio waves.

Answer 8

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Answer 9

They used microwaves, like the radar.