[quote]Suddenly Star Trek in 150 years doesn't sound that farfetched...[/quote]
I think that would be possible if we could find enough iron/steel/other materials to make space ships faster and easier.
However, actually exploring space is a different story, with the nearest star being about 4 light years from here (about 5,878,625,000,000*4.2 ~24,690,225,000,000 miles). We would need a way to create wormholes in order to greatly decrease travel time.
But the impulse engine sounds wonderful.
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Or harness dimensional folding to instantly travel light years in single seconds.
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That sounds absurdly farfetched and would take decade/centuries of research to even find out if it's possible.
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Of course it does, but it'd easily be the most efficient method of space travel! Think about it: Jumping ten thousand light years every second (without any actual acceleration, G's, or relativistic effects because you're stationary but traveling through a fold in the dimension above our own to another point in space), you could cross the known/observable universe in days! And cross our own galaxy in about 15 seconds at that rate! All we would need is some space-time flaws, like domain walls or such... But yes, that would take a long time to research to successfully produce. Probably hundreds of thousands of years, or maybe even millions. It's a type of technology so hyper-advanced I could only imagine beings who're millions or billions of years evolved and having survived to know how to use it or found out if it's feasible.
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Humanity probably won't last that long anyway.