Will intergalactic travel ever be possible?

Discussion in 'General Science & Technology' started by pluto2, Nov 1, 2010.

Thread Status:
Not open for further replies.
  1. RobertTen Registered Member

    Messages:
    5
    I imagine that to travel across galaxies, we wouldn't travel in a linear fashion, the way that we do in a car. Instead, we would teleport. Of course, we would have to find out how to teleport.

    I also liked the imagined theory of bending time and space, the way it was described in
    "A Wrinkle in Time." I know that was a fictional book, but alot of what was considered science fiction in the past is now a reality today.
     
  2. Google AdSense Guest Advertisement



    to hide all adverts.
  3. jameslasner Registered Member

    Messages:
    3
    when approaching the speed of light time slows down so much that no generational ship would be needed, however by the time you finish your tour of the local group even earth would be long gone. However its currently seen as impossible to go that fast.
     
  4. Google AdSense Guest Advertisement



    to hide all adverts.
  5. woowoo Registered Senior Member

    Messages:
    232
    if time stands still at the speed of light, then light itself must be
    timeless, and if light is timeless then it can travel anywhere
    in no time at all?
     
  6. Google AdSense Guest Advertisement



    to hide all adverts.
  7. Fraggle Rocker Staff Member

    Messages:
    24,690
    That's only true for things that have mass.
    Photons have zero mass, so this does not apply to them.
     
  8. woowoo Registered Senior Member

    Messages:
    232
    how can a photon have momentum (radiation pressure) if it has no mass?
     
  9. Fraggle Rocker Staff Member

    Messages:
    24,690
    I can't teach you relativity in a couple of posts on a discussion board--especially since it's been 50 years since I took Physics 201B. But I'm sure someone will jump in who can.
     
  10. DNA100 Registered Senior Member

    Messages:
    252
    It may be possible,but I believe it is only in the distant future.If you want to experience intergalactic travel,the first thing you need to worry about is life extension-and THAT may not be too far away.
     
  11. NetJaded Registered Member

    Messages:
    46
    I don't think that "technology has its limits" at all. We are constantly accomplishing things that were once thought impossible.


    I am not sure if intergalactic travel will happen, but it's possible; anything is possible.

    I think the limitation/obstacles may lie more with the human body and what it can handle in terms of moving at such a speed to make intergalactic travel possible.
     
  12. DNA100 Registered Senior Member

    Messages:
    252
    I don't think technology has limits either.
    Reminds about Ray Kurzweil's accelerating returns theory.He talks about the ultimate limit being when the universe becomes a brain/computer or something like that.
     
  13. Skeptical Registered Senior Member

    Messages:
    1,449
    You still have to get round the light speed barrier. The rule says that no cause and effect relationship can be propogated at more than light speed. That definitely includes space ships!

    Lots of ideas have been put forwards, from hyperspace to warping space/time, to wormholes, to diving through black holes. In every case, more detailed analysis has shown that the method will not work.

    With the current state of knowledge, saying we will find a way amounts to a statement that we will find a magic wand that can do miracles. It is religious faith - not science.
     
  14. Fraggle Rocker Staff Member

    Messages:
    24,690
    It's faith but not religious faith, unless you want to un-split hairs and insist that all supernaturalism is religion.

    And I'm not even sure that the prediction that one day we will find a way around a limitation which today appears insurmountable even qualifies as supernaturalism. Just exuberant optimism!
     
  15. M00se1989 Banned Banned

    Messages:
    508
    I say we build a better fission powered space ship than Russia, and see who can break the light speed barrier first

    Please Register or Log in to view the hidden image!

    Lets see if we can do it before the galactic alignment. I mean how hard could that be?
     
  16. Eagle9 Registered Senior Member

    Messages:
    242
    Guys, have you spoken about Alcubierre drive? This and such methods to my mind will enable the mankind in far future (let's say within 1-2 centuries) to visit other galaxies

    Please Register or Log in to view the hidden image!

    if I was Physicist I would try to overcome some problems connected with this method (see section Difficulties in the relevant link in Wikipedia)

    Please Register or Log in to view the hidden image!

     
  17. jmpet Valued Senior Member

    Messages:
    1,891
    Wow- what a novel thought.

    I believe the only way Special Relativity is possible is through other dimensions, which I am not against, being in this string universe and all.

    Wouldn't it be wonderful to have a hand held device that takes you to other civilizations?!!
     
  18. Sarkus Hippomonstrosesquippedalo phobe Valued Senior Member

    Messages:
    7,477
    You mean like sci-fi/fantasy book?

    Please Register or Log in to view the hidden image!

     
  19. Skeptical Registered Senior Member

    Messages:
    1,449
    The Alcubierre Drive requires, in theory, many times the total sum of energy contained by the entire universe. I am not holding my breath!
     
  20. Enoc Registered Senior Member

    Messages:
    57
    We don't know what we will achieve in the next million years or so.

    Although doubtful, perhaps by then we will figure out a way to cure all known diseases and maybe even travel manned across interstellar or maybe even intergalactic distances. But right now we have other things to worry about, like not running out of food, water and building space.
     
  21. Fraggle Rocker Staff Member

    Messages:
    24,690
    There's no shortage of food on this planet. The underpopulated Western Hemisphere could grow enough food to feed the whole world ten times over. Even the United States is a net food exporter. (Ever wonder where your corn and corn oil comes from? We also export other grains, fruits, meat, fish and dairy products.) Most of California, for example, is either farmland or forest.

    The problem is not food production, but food distribution. We send millions of tons of food to the Third World. But their despotic rulers intercept it, sell it on the black market, and use the money for hookers, champagne, exotic cars, French villas, and weapons to make war against the despotic ruler of the adjacent country.

    Fortunately democracy and prosperity are steadily spreading across the globe.
    These are issues of population growth. The second derivative of population turned negative about 25 years ago (I've been saying 15 but I finally did the math), so population is expected to peak at less than 10 billion before the end of this century... and then start falling.
     
  22. ShouldBeStudying Registered Member

    Messages:
    1
    We'll find a way.
     
Thread Status:
Not open for further replies.

Share This Page