How far have the technologies come interstellar space travel?

So far we have managed to send 5 conventional spacecrafts out of our solar system but they took decades. With current technology interstellar travel is not feasible and necessary. And we would not witness this event in our lifetime. read more

Technically savvy scientists and engineers have put much effort into conceiving far-future technologies that might make possible near- light-speed travel. You can learn a lot about their ideas by browsing the web. It will take many centuries for humans to make any of those ideas real, I think. read more