Just as humans have broken through barriers we’ve previously thought to be insurmountable, so will we find a way to transcend the physical laws of gravity, space and eventually time. In simplified terms Einsteinian law sets the practical physical limit for space travel at much less than the speed of light; the faster we travel the greater our mass and with a corresponding increase in energy to continue to accelerate. Yet in contrast we can send data at the speed of light without even trying, and have done since early last century.
Ray Kurzweil describes a point in our evolution—it is closer than we think—when we can convert our entire consciousness into data (not just our memory), and, therefore, send it at the speed of light where ever we want. But if there is nothing out there to receive it, it will remain as data and continue on infinitely through the universe. If we do come to communicate with a similarly intelligent and advanced society light years away we could first send information and instructions on how to build a biological vessel for our transported consciousness to be downloaded to. We will find ourselves having traveled across space at impossible speeds for physical objects.
To me this sounds perfectly plausible and if it sounds plausible to us in our current primitive state then it will be much simpler in the future.
We have to unshackle our minds from the physical world, and limiting our thoughts to the current and immediately past paradigms. The universe is too big [yet another physical term?] for that. I think this is a way for us to comprehend the universe as infinite. With our minds shackled to physical ideals we cannot grasp the infinite; the best we can do is think of something so large we can barely comprehend it. To truly be able to understand the infinite we must release our maniacal grasp on physical ideals…all of them.