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Thread: Voyager has left the building?

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    Default Re: Voyager has left the building?



    Quote Originally Posted by Super08 View Post
    That is why it would be impossible for humans to explore deep space unless a way of traveling through something like a worm hole becomes reality. The distances are far to great for the speeds we can obtain or the amount of fuel that can be carried on board.
    There are a few "theoretical" ideas that may one day be capable of propelling a craft containing humans at deeply relativistic speeds without manipulating spacetime or carrying fuel on board, but one has to wonder about the political will to fund such projects, since many of the most interesting deep space explorations would never yield any benefit to the generation that paid for them back on earth due to time dilation (or the lack thereof) back on earth. For example, a trip to the center of the galaxy could be achieved within a few years for the crew at a high enough percentage of the speed of light, but for those of us back here on earth, 60,000 years would pass before the crew went there and reported back. I doubt any government would pay for that. Maybe some super rich guy will fund his own trip one day.

    Perhaps it would be feasible to one day fund deeply relativistic trips to nearby stars (Proxima C for example), but I'd say deep space is a non starter due to the above-mentioned political reasons related to funding. For deep space, like you say, we need spacetime manipulation. Of course there are two questions: is spacetime manipulation possible (ie do the laws of physics truly permit it in the real universe that we live in -- not merely on paper) and will we ever be capable of doing it? I have my doubts about both, unfortunately.

    Ah, but we can dream....

  2. #22
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    Default Re: Voyager has left the building?

    One thing I wonder about is what kind of signal attenuation is there over that distance.
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    Default Re: Voyager has left the building?

    Quote Originally Posted by neal_mlc View Post
    One thing I wonder about is what kind of signal attenuation is there over that distance.
    You could calculate it if you knew the radiation pattern of the high-gain antenna. The transmitter power, if I recall correctly, is 5 watts(!!). You could probably look up the antenna diameter, and from that, figure out how big the radio beam is after 11 billion miles. (I'm guessing a few million miles across.) So, divide 5 watts by the area of the beam at our distance, and you have the flux density in watts per square meter. There will be a lot of zeroes after the decimal point!

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  4. #24
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    Default Re: Voyager has left the building?

    wow. just imagine the places voyager will go long after our solar system is gone. all evidence of the human race could be gone except for a little lone messenger in the depths of space. I wonder, maybe one day with future technologies we might even catch up with the little guy and say hello.
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  5. #25
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    Default Re: Voyager has left the building?

    Pretty amazing to think of where this vessel is heading and what it will see...
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    Default Re: Voyager has left the building?

    Quote Originally Posted by jakeyboi View Post
    wow. just imagine the places voyager will go long after our solar system is gone. all evidence of the human race could be gone except for a little lone messenger in the depths of space. I wonder, maybe one day with future technologies we might even catch up with the little guy and say hello.
    I certainly hope so
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    Default Re: Voyager has left the building?

    Quote Originally Posted by moxican View Post
    How long did it take to leave the solar system? I mean since it was lunched.
    Let's put it this way: When I heard about the launch, I was wearing a liesure suit and headed to the disco!

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    Default Re: Voyager has left the building?

    18 billion km plus on a "tank" of fuel, now that's fuel economy! I can see the commercials for the next generation Civic hybrid's now, lol.

  9. #29
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    Default Re: Voyager has left the building?

    Quote Originally Posted by gremmy View Post
    There are a few "theoretical" ideas that may one day be capable of propelling a craft containing humans at deeply relativistic speeds without manipulating spacetime or carrying fuel on board, but one has to wonder about the political will to fund such projects, since many of the most interesting deep space explorations would never yield any benefit to the generation that paid for them back on earth due to time dilation (or the lack thereof) back on earth. For example, a trip to the center of the galaxy could be achieved within a few years for the crew at a high enough percentage of the speed of light, but for those of us back here on earth, 60,000 years would pass before the crew went there and reported back. I doubt any government would pay for that. Maybe some super rich guy will fund his own trip one day.

    Perhaps it would be feasible to one day fund deeply relativistic trips to nearby stars (Proxima C for example), but I'd say deep space is a non starter due to the above-mentioned political reasons related to funding. For deep space, like you say, we need spacetime manipulation. Of course there are two questions: is spacetime manipulation possible (ie do the laws of physics truly permit it in the real universe that we live in -- not merely on paper) and will we ever be capable of doing it? I have my doubts about both, unfortunately.

    Ah, but we can dream....
    You been watching too much star trek. You could travel at 7 times the speed of light or 7 mph for 10 years. What ever speed your doing you would still have physically been in existence for 10 years since you stared moving. Even if that kind of speed somehow slowed down the aging process, I doubt it would be enough to survive 60,000 years.

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    Default Re: Voyager has left the building?

    Quote Originally Posted by The Astrostig View Post
    You been watching too much star trek. You could travel at 7 times the speed of light or 7 mph for 10 years. What ever speed your doing you would still have physically been in existence for 10 years since you stared moving. Even if that kind of speed somehow slowed down the aging process, I doubt it would be enough to survive 60,000 years.
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