Is interstellar space travel possible for human being ? If not, will it be possible in three hundreds years from now ?

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<Is interstellar space travel possible for human [beings]?> I'm in the camp that believes limited interstellar travel will be eventually be possible. It will take a global effort to do it, though, and most of the world's production for generations to make it possible. (In other words, it's going to take a new global religion to bond us together.) H.omo sapiens has existed on Earth for between 100,000 to 250,000 years, so clearly is able to exist for long periods on the planet. The trick to interstellar travel, assuming no breakthrough technology in FTL travel is found, is to have a massive enough ship with enough resources to make such a voyage possible. As Ryan suggests, it may be possible to have much of the flora and fauna for a new world preserved as seeds for plants and in embryonic state for animals, unless the ship itself is large enough to sustain all of it, which is hard to imagine (but interstellar travel is also hard to imagine.

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<will it be possible in three [hundred] years from now?> Almost certainly not. Maybe in three thousand. It's impossible to predict when any indefinite future event will happen. What it will take is the collapse of the world's current belief systems, and the recognition that the true purpose of humankind and other life on Earth, as the only *known* self-aware bits of the Universe, is to spread life. If there is any reason for us to exist, this is it, and once (if ever) the world unites guided by that belief, an attempt to spread complex cellular life to other stellar systems will become our goal, our One Commandment to ourselves.

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It *might* be possible in that time to build automatic robotic seedships in that time frame, with the technology to mine asteroids to build orbital habitats around other stars. *IF* (and that's a very big IF) we can master the science of cryogenic freezing, it might prove possible to preserve adult humans for the very long trip to another star.

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Right now, we're not even able to send an unmanned space probe into interstellar space. Voyager still has the Kuiper Belt and the Oort cloud to traverse before it enters the realm of the stars.... And, it's been in space for 38 years.

Will humans *ever* get out that far? I will say right now, the answer appears to be no. But, 100 years ago (1915) - if you told someone "Man will land on the moon someday" - they'd think you'd lost your mind.

Discoveries happen, science advances, and Man has a powerful will.... I won't say never, and I don't know if it would happen before your 300 year deadline occurs - but *if we really want to*... I *think* we would find a way.

In a word, yes. 20 years ago, inspired by Star Trek, Miguel Alcubierre brought forth his theory as to how the Enterprise's warp drive could send the ship beyond the speed of light without violating any of the laws of physics. Namely it's not the ship that moves, but space because there is nothing to say that space itself cannot travel faster than light.

But a problem, you needed to convert the mass of Jupiter into energy to power the drive if you want to go to Alpha Centauri.

Then enter NASA scientist Harold "Sonny" White and his team when they reexamined the Alcubierre warp drive and found they can use noticeably less energy. Namely convert the entire mass of the Voyager 1 spacecraft into energy. 1.898*10^27 kg vs 727kg. An energy source if you had half a tonne of matter or half a tonne of antimatter, or about thousands of tonnes of fusion fuel.

NASA is already working on the theory now and are convinced that we will be using the warp drive to reach Mars in a matter of minutes by the end of THIS century.

As far as actually traveling to another star system, that is impossible with today's technology and will continue to be impossible for a very long time.

The probe “Voyager I” is one of the fastest outbound objects we’ve ever sent into space. That speed was attained in part because its mass is tiny.

If it were traveling in the direction of the nearest star to ours (it isn't), it would arrive in about 75,000 years. By the time it arrived, cosmic rays would have converted it to useless junk.

All things considered, I don't think 300 years will be long enough.

Perhaps not with Faster than Light ships, but via a physics "back door" where we energetically reset the spatial attributes of matter particles (of a ship--and its passengers) to match that of another location in the universe. The vessel would then instantly JUMP to near the desired vicinity and then finish the journey with more conventional propulsion. We could make such a breakthrough in theory anytime within a few years---Practical technology, however to do it might take around 50 years. Some variations of Quantum Theory , multiverse theory or Holographic Universe theory would hold the answer. When you consider the nature of space, it becomes evident that, for the most part it is an illusion on how we perceive certain "attributes" of matter. Just as particles may have attributes of "spin", "color", "charge, etc.. they also could have attributes of "Spatial position" Change these attributes with specifically designed energy pulses, and we would effectively change the particle's position in our "spatial" reality level. It could take days or weeks to build an energy potential in a huge, on board capacitor array. Enough energy to execute the jump might be obtained by a VERY QUICK short duration "controlled" discharge, that would effectively amplify the energy effect even more. Such ships might have to make several "Jumps" to reach their destinations.---But as technology improves, longer and longer jumps may be possible.

Unless a new principle of physics is discovered that allows us to get around that bothersome "speed of light" limit imposed by the standard model, the answer is NEVER. This is NOT a technology problem that can be solved by a hundred, or a thousand, or even a million years more development, but a basic physics problem. You can't "fix" physics!

Yes. It is possible. With the current technology, we could build a spacecraft that could travel up to 1% the speed of light. And yes, it would take hundreds of years to reach the closest star, but if we froze embryos on this spacecraft and the on board computer was capable of teaching the infants and caring for them, then humans could travel interstellarly.

Only when warp speed is accomplished -- Like on the classic TV show -- Star Trek -- Warp 3 -- 3 time the speed of light is a speed like a googleplex number in how fast it is

Yes. What most people don't know is that Star Trek is actually a documentary.

Gene Roddenberry discovered it as 'found footage' that was accidentally sent back in time, and turned it into a tv show.

Unless/until the standard model is overthrown and replaced by a theory that permits faster than light travel we are staying in this solar system.