Definitely no one can say, but the vast majority of scientists believe that the ships of the future will move much faster than the speed of light.
Compared to the distance between the stars, the speed of light is negligible. The path to the nearest neighboring star systems (such as Alpha Centauri) would last more than four years, the speed of light. To flight lasted at least a week, the ship will need a minimum cruising speed of at least 25 thousand times the speed of light! But the nearest habitable planet may be at a distance of 25 to 200 light-years from Earth.
Theoretically superluminal flights are possible. There are two main theories for the implementation of such operations:
1. Wormhole. The theory is based on the fact that space can bend like a sheet of paper so that the place of beginning and end of the flight will coincide or strongly close together. Then in the resulting "tunnel" to move from the starting point of the tour end in place much sooner than is necessary for the light to overcome the same path as the crow flies.
2. Warp drive. It is still science fiction theory about a certain engine that will allow to get from one point to another universe faster than light.
However, current knowledge of people is not enough to build ships or equipment to overcome the above mentioned methods of space. These methods are similar in that both are based on the theory of relativity.
In addition, the question of energy: how to reduce the cost of power consumption and how to create and apply the appropriate charge of "negative energy" to create the necessary enabling environment for super-light engines.
Imagine literary starship crew goes where as if the ship is in the world and will not fly. This means that the ship itself creates a gravitational field for the comfort of the crew. In deep space, these fields do not exist.
Given the possibility of acceleration inside the vehicle, do not need much effort to imagine that such a force can also be created outside it, thus moving our spaceship through the universe. This "rocket-free" space-engine would be the greatest breakthrough in the technology of space travel.
In addition, to keep the superluminal flight requires a special method of storage and use of energy. Nuclear reactors — a real one, but an unsafe way out, and the quantum vacuum energy poorly understood and is still at the stage of empirical research.