text: do you think we will ever travel in lightspeed?? traveling in lightspeed possible?  yes/no?? why?? probably not.  at the moment the laws of physics show the speed of light is an absolute barrier for matter. it is not like the speed of sound which was an engineering hurtle, crossing or attain the speed of light is impossible for anything with mass.  in a particle accelerators the electrons, protons and whatnot can be moved to speeds very close to that of light (like 99%), but they never reach the speed of light.  if you're in a rocket and turn up the motor you can get closer and closer to the speed of light...but never reach it.  certainly in the future we will have a better understanding of physics, but it is exceedingly unlikely that something as fundamental as the speed of light barrier will be shown to be wrong. (just as when einstein came out with general relativity - which is essentially a theory of gravity - it did not show that newton's theory of gravity was wrong so much as it only applied to (relatively) small masses.)  as for the galaxy, those above are correct that it is not expanding. rotating, but not expanding.  the universe itself is expanding, and finding over the last few years have found that the rate of expansion is accelerating. meaning that that in the future the universe will expand faster. eventually something bad will happen if that acceleration keeps going. but that's in 100 billion years or so, so i wouldn't worry.