I need some information how NASA can pick up radio waves from the moon or Mars.I know there is a delay in communication because radio waves only travel so fast .
And it is my understanding that because space is a vacume the radio wave can go billions or trillions of light years do to the vacume using a 3 watts transmitting power and not despair. I’m not sure how gravity effects radio waves or other stars and planets it may make it weak or some other strange thing .
But a atmospher will make it weak any air or matter will make it weak .But space is a vacume and have no air so it does not make it weak or despair.
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Radio waves will travel through space for billions of light years - they only become "weak" because they spread out (just as light does).
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Can you explain the above better and how a good receiver works.So bigger the dish more energy it gets ? And how does this work.
I thought space is a vacuum so the radio waves would not be weak or spread out .
Some one was saying NASA uses low transmitting power why is that and say the key is a good receiver and antenna. How does this work and what is going on?
And it is my understanding that because space is a vacume the radio wave can go billions or trillions of light years do to the vacume using a 3 watts transmitting power and not despair. I’m not sure how gravity effects radio waves or other stars and planets it may make it weak or some other strange thing .
But a atmospher will make it weak any air or matter will make it weak .But space is a vacume and have no air so it does not make it weak or despair.
++++++++++++++++++++++++++++++++++
Radio waves will travel through space for billions of light years - they only become "weak" because they spread out (just as light does).
++++++++++++++++++++++++++++++++++
Can you explain the above better and how a good receiver works.So bigger the dish more energy it gets ? And how does this work.
I thought space is a vacuum so the radio waves would not be weak or spread out .
Some one was saying NASA uses low transmitting power why is that and say the key is a good receiver and antenna. How does this work and what is going on?