first off, i have a great interest in science, but my expertise is in other areas...so i'm just testing my understanding of how things work. so i would appreciate any feedback or corrections. thanks.
it seems that we take it for granted that one day humans will travel the stars...i'm not so sure. even if we can build a spacecraft that can approach the speed of light, which i don't think will ever happen, there are still too many obstacles which seem insurmountable. first off, if my calculations are correct, it would take a year to accelerate to that speed...and another year to stop. also, you wouldn't be able to navigate a ship travelling that fast. you're pretty much travelling in a straight line. you would need to make any course corrections millions, if not billions, of miles in advance. and if you hit anything with mass at that speed...a tiny ice crystal, or a gas cloud...the results would be catastrophic. then there's building the ship itself. can't even imagine how much power an engine would need to generate...and be able to sustain that power for at least a couple of years. not only sustain, but increase in power as velocity increases. and you would need to power the ship for years, even with time compression, as well as having a complete self contained ecosystem on board. remember, there are no bus stops along the way. the hull integrity would have to be perfect and remain perfect for the entire voyage. and i'm sure there are many more challenges which would have to be addressed. but i don't see a way getting pass the ones i've mentioned...regardless of how much technology advances. the universe is just too big and the laws of phyisics are just too restrictive to allow star travel, imho. what do you think?