What If NASA Could Figure Out the Math of a Workable Warp Drive?
What if we, the people of the early 21st century, could be among the generation -- the first and only of all the generations ever -- that would be first to know that we were not alone?
But then there is the inevitable letdown: Even if we did find a planet in one of those nearby stars' habitable zone and even, even, if we could detect an atmosphere that could harbor life, then what? Alpha Centauri may be the closest star system to Earth, but it's still four light years away. Voyager 1, our farthest-traveled probe is moving at *38,000 miles per hour*, and after 35 years, it's still in our solar system (barely). Moving at Voyager's speed, it would take 700 *centuries* for a mission to reach Alpha Centauri. With speeds like that, we stand to become the first generation to know life is out there, and to not be able to know much more than that. The prospect is maddening.
Of course, our only hope would be to travel at much, much greater speeds. As MIT astronomer Sara Seager explained here at The Atlantic to Ross Andersen:
There are a lot of people who think we have the capabilities to get to a tenth of the speed of light. People are using that number as a benchmark of what they think is attainable, whether it's with a solar sail or nuclear pulse propulsion. If we could achieve that speed, then we could get to Alpha Centauri in just over 40 years.
Whenever I give a talk to a public audience I explain the hazards of living on a spacecraft for 40 years, the fact that life could be extremely tedious, and could possibly even include some kind of induced hibernation. But then I always ask if anyone in the audience would volunteer for a 40+ year journey, and every single time I get a show of hands. And then I say "oh I forgot to mention, it's a one way trip," and even then I get the same show of hands. This tells me that our drive to explore is so great that if and when engineers succeed at traveling at least 10 percent of the speed of light, there will be people willing to make the journey. It's just a matter of time.
So, one-tenth the speed of light and we could be there in 40 years. That's not half bad. As Seager notes, many people would be willing to give up Earth and make that assuredly miserable journey for the privilege of being the first humans to explore another solar system. But still: 40 years, it's no cakewalk.
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Back in September, plans for a NASA-built warp drive were revealed, bringing with them the possibility of exploring parts of the universe previously deemed unreachable. In an extensive interview with io9 , Harold White, the physicist behind the project, explains how "faster-than-light" travel might be possible.
( via theatlantic.com )