or humans will invade aliens planet
If the speed of light is the absolute limit in the galaxy, then we will never visit an alien's planet, and they will never visit ours. The distances are just too great.
I'm talking for organized matter. While it could be theoretically possible to enter a black hole and come out in some other area of the galaxy - there is no way we would survive such a journey.
If something like wormholes exist, the speed of light doesn't matter because you travel a faster route.
No. With technology growing everyday.. In a few years time, we would be able to travel at the speed of light x2!
Anyways, this is what I think of the 'black hole travel' idea. With that much gravity, you, your craft, and everything else would be ripped apart, down to the atomic level even. I think you'd need some sort of craft that allows it to travel at 300km/s or even faster to be able to not be spaghettified. Now, I might be totally wrong, but that's my say.
https://bitcointalksearch.org/topic/nasa-may-have-invented-warp-drive-aka-perfect-engine-for-a-1000yo-human-1043360