To start exploring other galaxies at this point makes sense. However you can not go faster than light. Anyway it would take lots of energy to accelerate and decelerate. You would need to find a way to make a worm hole. That is the only possible plan. [The energy problem might not be too hard if you had a way of converting gravity waves into energy or anti gravity.]


I can see a few possibilities. One is that in String Theory, the Branes that strings live on are also strings. [That is they are the same stuff, but just more dimensions.] They are higher dimensional --so the string has somewhere to be. So these branes should not be all that harder to deal with any more than ordinary matter. [They are not just "space-time". I mean space-time is hard to deal with. It takes something big like the sun to do something noticeable to space-time. But branes are just another form of strings.]