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Natural Science Forum / Physics / General Physics / July 2008Are starships a possiblity?
This is an opinion post just to see your reactions. I have done som reading on the subject of space travel and interstellar starships an most claim it is not a viable option. So what do you think -- Will Davis > This is an opinion post just to see your reactions. I have done some > reading on the subject of space travel and interstellar starships and > most claim it is not a viable option. So what do you think? With the understanding of relativity--it is tantalizing to visualize the flitting about in spaceship, say to the Andromeda Galaxy is as little at 30 years. But there is a problem getting close to the speed of light. o The energy required is not available. o At really close to the speed of light, every encounter with even a grain of sand along your path would vaporize your ship. Reality puts severe limits on space travel... Space travel is likely to be expensive and slow. > > But there is a problem getting close to the > speed of light. [quoted text clipped - 7 lines] > Reality puts severe limits on space travel... Space travel is likely > to be expensive and slow. And worse, consider the danger to life on earth. A ship of about 10000 kg is coming home, to earth. It has accelerated to 99% the speed of light. And accident occurs that kills everybody on board. It is heading for earth, with no brakes. Use the Lorentz mass formula and E=mc^2 on the energy released. When that ship hits the earth, it will be like 9999 kg of kinetic energy will be transfered to shock waves and heat energy. That will be more than enough to wipe out life on earth. One lousy accident. Okay, may there won't be such an accident for a while. However, imagine a real commercial, socialist, whatever society where star ships are possible. Hundreds of such space ships. You mean an accident like this won't happen at least once? The energy to get a reasonable size starship close to the speed of light is letha to the extreme. A society that develops such power is likely to wipe itself out, by accident or war. Maybe this is why we haven't had any visitors. > This is an opinion post just to see your reactions. I have done some > reading on the subject of space travel and interstellar starships and > most claim it is not a viable option. So what do you think? Well, At slow speeds it is a challenge and a half, and at high speeds it becomes even more such challenge still because of the distances involved. viable today? not really viable some day? Nobody really knows. :)  SignatureJames M Driscoll Jr Spaceman > This is an opinion post just to see your reactions. I have done some > reading on the subject of space travel and interstellar starships and > most claim it is not a viable option. So what do you think? Barring different physics being discovered, never. Immortality won't make it work, either. "The Starflight Handbook" Mallove and Matloff. SignatureUncle Al http://www.mazepath.com/uncleal/ (Toxic URL! Unsafe for children and most mammals) http://www.mazepath.com/uncleal/lajos.htm#a2 Uncle Al (of Irvine) Humankinds life span to short. Outer space to large,and light is to slow means space ships are limited to traveling only in the solar system. Bert >> This is an opinion post just to see your reactions. I have done some >> reading on the subject of space travel and interstellar starships and [quoted text clipped - 4 lines] > > "The Starflight Handbook" Mallove and Matloff. What about Heim Lorentz propulsion? Is that possible? Not really light speed, but close? Coater On Jul 2, 11:35 pm, Will Davis <Will.Davis.2b21...@physicsbanter.com> wrote: > This is an opinion post just to see your reactions. I have done some > reading on the subject of space travel and interstellar starships and > most claim it is not a viable option. So what do you think? It is certainly possible and possible to do so within the lifetime of the travelers. What's not possible, it appears, is to do so and return to earth within the lifetime of those left behind on Earth. PD > On Jul 2, 11:35 pm, Will Davis <Will.Davis.2b21...@physicsbanter.com> > wrote: [quoted text clipped - 5 lines] > the travelers. What's not possible, it appears, is to do so and return > to earth within the lifetime of those left behind on Earth. Lifetime of those on Earth? LOL If they can return within thier lifetime at all, they would be returning within the same lifetime on Earth. Don't listen to PD about time, He has no clue how to use Universal time. And apparently he still ignores the fact that long before people on Earth died the astronaut would lose bone marrow faster than people on Earth proving his time slowing from speed alone crap is bullshit. :) PD thinks a clock malfunction occuring on board the starship, will make you live longer in space. LOL SignatureJames M Driscoll Jr Spaceman |
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