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The Three Possible Classes of Interstellar Travel (forbes.com)
An anonymous reader writes: The stars call to us through the ages, with each and every one holding the promise of a future for humanity beyond Earth. For generations, this was a mere dream, as our technology allowed us to neither know what worlds might lie beyond our own Solar System or to reach beyond our planet. But time and development has changed both of those things significantly. Now, when we look to the stars, we know that potentially habitable worlds lurk throughout our galaxy, and our spaceflight capabilities can bring us there. But so far, it would only be a very long, lonely, one-way trip. This isn't necessarily going to be the case forever, though, as physically feasible technology could get humans to another star within a single lifetime, and potentially groundbreaking technology might make the journey almost instantaneous.
here is a working link thats not thru forbes. http://scienceblogs.com/starts...
Only a blank page.
No, I'm not going to enable Javascript on two dozen sites to see this shit. Post a real link or STFU.
1. Generation ships
2. Nuclear propulsion, antimatter propulsion
3. Science fiction (warp drives, transporters, etc.)
Anyway all of this seems moot to me. We can already freeze human beings for long periods of time. It's called 'embryo freezing' and it's commonly used.
A fool and his hard drive are soon parted.
First, the link goes to forbes.com which blocks any browser with an ad-blocker. http://fortune.com/2015/12/22/...
That's ironic and hamfisted, but particularly in light of Forbes own September 2015 article that says ad blockers won't hurt online adversiing. http://www.forbes.com/sites/ro...
Second, the summary of this "anonymous posting" says:
The stars call to us through the ages, with each and every one holding the promise of a future for humanity beyond Earth
No. They don't. Humans evolved to live here, on Planet Earth. Not on our own star, or on any other star, and humanity's future is right here where we have an entire planet we were built for... not on a foreign star.
How CRAZY would we think it of MONKEYS who want to live underwater? We'd marvel at why happy jungle monkeys would leave a comfortable environment free of most predators and full of food to go somewhere hostile where they can't breathe, their temperature will decay, and without machine aids would soon die.
That's no different than us claiming that other stars[sic] becon us to live there. No. There's great scientific exploration to be done, and we could even establish limited outposts where machines keep us alive despite the harsh vacuum and cold [or relative heat] of space. The ISS is a good example of one such outpost. However, there's no "interstellar colonialism" happening because the rest of the universe is inhospitable.
Saturday... when an "anonymous" (friend of the editor?) posts something that makes no sense, and links to a site that's about as close to a paywall as you can get.
Ehud
You can make human colonies in faraway places without humans having to travel there. In 200 years, I expect that we will be able to reproduce entire ecosystems from data alone. That data "recipe" could be packed into a rather small package and transported slowly to many distant solar systems to germinate into diverse islands of life and civilization. Once this becomes possible, I really doubt that nobody is going to get around to doing it. We will need an autonomous asteroid miner, ore processor, and a primitive 3D printer to produce other, increasingly more precise and specialized machines. To do their job, all they will need is the right software, lots of ordinary rocks, and the energy of a nearby star. The system will be able to build anything that we are able to build, including viable cells with human DNA, and the technology to gestate them. With careful planning, I suspect that the starter kit will fit inside the volume of a shipping container. Since the data/software will be stored in a very stable medium, these seeds will work even if their trips to the stars are slow. But if we spam the galaxy with these little seeds, the future of humanity will eventually be pretty grand.
Seems Forbes found out about getting around the clickbaits. The scienceblogs link now just has a longer version of the summary with pictures added, and a link to the clickbait version.
How did this get posted the the /. main-page? Forbes is a magazine about money, with a known editorial slant. The article's author apparently discovered science fiction novels, and then perused Wikipedia for all of his sources (except for a pic or two from NASA/JPL, which are public == free).
WP is great, but for some bozo to lazily summarize a few WP articles, all written by many volunteers, including their fair-use images, and then selling it in a for-profit magazine w/website is disgusting.
It's totally against everything that Wikipedia is about. Ah, but it is also everything that Forbes is about. So there is that.
Disregarding science-fiction babble like in this article, the fastest we can get to Proxima Centauri is 80k years assuming no fundamental breakthrough, or 100 years with ultimately advanced technology that's not known to be impossible with our current knowledge of physics.
Writers of such articles tend to forget that every gram of fuel needs to be accelerated by previous stages, and even worse, all the fuel needed for deceleration must be first accelerated all the way then decelerated partway. This puts a hard cap even if you magically got 100% efficiency.
But fortunately, such writers are also forgetting that physics isn't the only technology field that advances. I'd expect that both stopping aging and sentient AI are no more than 100-200 years away. Just don't forget to take playing cards with you to spend time during than 80k years long trip.
The creatures outside looked from Alt-Right to Antifa; but already it was impossible to say which was which.
Before going speculative about teleportation and work holes, but past antimatter propulsion is a miniature black hole power source. A million metric ton black hole would radiate about three terawatts (with less mass dramatically raising the radiated power) and you could use magnetic fields to pump in material from in front of the ship. It would eat anything even photons and nutrinos. It should be able to power a decent sized ship and would be the most ideal power source known to modern physics.
This poses some interesting possibilities...
Sci-Fi writers have been looking at these paradoxes from the beginning.
The short answer is that interstellar emigration implies that your back is against the wall. It is now or never kind of thing --- with a very good chance you will doing everything you can to conceal your true destination.
Methuselah's Children (1941, 1958)
Rescue Party (1946)
Battlestar Galactica (2004)
I dearly hope so. For those who can barely tolerate the rest in steerage, imagine decades with your fellow man!