The future of intergalactic travel may be closer than you think. Although the process may be a few hundred years down the road, some scientists believe that the starship of the future could be powered by a black hole.
As Newton's famous equation states all matter has a energy according to e = mc2. Currently the process in which we launch our rockets (burning tons of liquid and solid fuel to produce thrust) only yields under 1% of the energy that matter is capable of. This is where the black hole comes in.
Black hole dissipate all the energy from the matter they consume as radiation. A very small black hole could be created and fed small bits of matter of which would create immense amounts of energy that could propel a ship to near light speeds.
The future of space travel maybe a bit darker than we thought.