if I am traveling in a craft at 95% the speed of light relative to everything outside this ship, is it possible to travel in the same direction as the ship is moving at 95% the speed of light relative to things inside the ship? making me travel faster than the speed of light relative to things outside the ship? I know there is more to it that that like time slowing down so I would appreciate it if someone could explain exactly what is going on here. also if this is possible, what would happen if, while both objects were at full motion at 95% the speed of light, I reached the edge of the spaceship and burst out of it's confines? I think I remember reading something saying that while it would seem to me like I was traveling so fast inside the ship, to an observer outside I would just be traveling slightly faster than the ship? is this due to the time slowing down at speeds near light? if so does anyone know why time slows down at these speeds? these questions have made me think of another question hope Im not overloading anyone. lets think about the twin paradox. I am traveling away from my twin at 99% the speed of light. the nearest star is 4 light years away, but if I travel away from my twin at these speeds for only minutes, then years may have passed for him. does this mean that if we could achieve speeds close to light then we could travel to these stars or other galaxies in only minutes to days relative to those inside the craft, but it would be millions or billions of years before we reached these stars relative to everyone outside the ship?