Interstellar Travels

i found lately a website talking about interstellar travels.

i would write a decription of all i read in there but i'm not enough good english writer to explain. so the best is go read by yourself :)

Mission Backup Earth : Interstellar Travels

i liked alot what i ve read in there and there is alot of common sense, alot of realism.
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personnally i always been sad that i ve come on earth too soon, i would have always loved to travel from stars to stars.
meh... maybe next life :S

me too i think the first manned travels will be generation boats. and they will see their first babys born in ships. but it will be very very far away in time. certainly not this century.
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ya i know. gravity is very important in long term.
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Which is why I question all these sci-fi stories using stasis for long journeys, although .....

Stasis (fiction) implies, especially in science-fiction, an artificial pause that stops all physical and chemical processes, including those of life; they resume as if uninterrupted as soon as the stasis is ended.

other thing, we cant go anywhere till we wont know how to do shields
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Space travellers will almost certainly be 'locked-in' to the science they took with them when they departed. They may hear of new developments happening back on Earth somehow, but how could they fashion/manufacture anything new?? That's where a Robbie Robot would come in real handy, but he/it doesn't exist, AFAIK. :)


Lt

I've always imagined gravity, light, and time being closely related.

I think interstellar travel may be a myth. When we look at the most energetic events in the univerwse, supernova, what we see follows Einstein's laws. When we crash protons into eachother, the particles flying out follow Einstein's laws. If everything we observe at these very high energy levels seems to follow Einsteins laws, then those laws become the governing principle of just how fast a ship can travel, and how much energy it would take to accelerate it there.

Wormholes are the size of atoms if they exist, and I'm not sure one could count on them as stable. I can't imagine the first ship deciding to plunge head long into something the size of an atom, and without knowing where you would end up.

Also without some solid evidence of what is there, why would any ship expend these huge quantities of energy and just head off into the sunset like Star Trek? To me it makes much more sence to know where you are going, and have a suitable way to get back.

Yes, travel at near the speed of light is possible, but even still the distances of even just 1 star away are enormous. With our nearest star, the shortest possible trip would be 8 years, with no time to stay and visit. If a ship was going to spend 4 years just traveling from one star to another, then one would think they would be planning on staying for a while. Also you would think they would need some way to refuel.

I did see a design concept of a ship about the size of the moon once. It had a huge, what looked like a satelite dish in front of it. It's purpose was to scoop up free hydrogen atoms from space, where there is about 1 hydrogen atom in an area the size of a grape fruit, and crash them together in a fusion reactor. That ship could have obtained about 80 something % of the speed of light. That would be an example of constant refueling, but the size required would be a lot of resources for anyone to build.

The more we learn about physics, the more we seem to be bound by it.

Steve
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Warning, addicted to SETI crunching!
Crunching as a member of GPU Users Group.
GPUUG Website

Space travellers will almost certainly be 'locked-in' to the science they took with them when they departed. They may hear of new developments happening back on Earth somehow, but how could they fashion/manufacture anything new?? That's where a Robbie Robot would come in real handy, but he/it doesn't exist, AFAIK. :)

it remembers me in some Sci-Fy Tv shows where some humans gone in generations-boats werent arrived yet to their destinations while 100-200 years later humans travel with new technology they discovered since the boats gone... arriving at destinations way ahead before the boats ^^

I too have heard many times that our technology still has a long way to go. What concerns me is that by looking at the most energetic events in the universe, supernova, and proton crashes, there doesn't seem to be evidence to support it. If evidence is not shown in the enormous amount of energy released in a supernova, which is capable of making most of the periodic table, then where would you look for such evidence. We have looked at the universe in all wave lengths. From radio, to infrared, to visible light, to ultraviolet, microwaves, and gamma rays. The spectrum is only so large, and when making observations across the band, and not seeing evidence, it does make one wonder a bit.

I'm not saying more discoveries won't be made, but they will be made within the bounds of the observable, testable framework present through out the universe.

This is just my opinion.

If physical laws exist on earth, then it must be the same way on the moon, or on other stars, or anywhere, or visa-versa.

Steve
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Warning, addicted to SETI crunching!
Crunching as a member of GPU Users Group.
GPUUG Website