User blog comment:PitaKang/Funday Monday 3: What would an interstellar civilization look like?/@comment-32656-20130501080354

Wrong about wormholes - they are only passages in time under the correct conditions - i.e. in an area of immense gravity, like a black hole. Even then, you have to get the wormhole into the gravity field and then out again, and conditions apply - it's been theorized that you couldn't use it for more than a few years one way or the other, and not go back to before its invention. Can't use a wormhole to go back in time if it does not exist, after all.

You mildly exaggerate how hard it would be to attain large portions of light speed.

NASA is working on the application of several different theories about how to achieve "faster than light" travel, like the others have indicated. There are other ones out there that they haven't even looked at, either.

Elements of gravity don't nessecarilly follow that speed, either.

For that matter, look at more modern science fiction - many of them actually use these new theories for their FTL travel.

And there is a lot about deep space we don't know, as well. Heck, it's been theorized that bands/waves/currents kind of like in oceans exist out there.