AMA Engines (Anti-Matter Annihilation Engines)

Anti-matter engines are used for all interplanetary travel by many of the galaxies races.

Anti-Matter beam is fired through the engines converted into energy, this can (in rare cases and few) cause a ship to travel up to speeds of 50% the speed of light, this has only been heard of once, most ships hulls and shields cannot handle those type of speed's in normal space.

Generally Sol Federation ships can travel at about 10% of the speed of light, this means it can travel from the Earth to Pluto in an hour.

These generally are faster military ships and a few civilian escorts, mass majority of non-combat ships would take approximately 3-4 hours to reach Pluto from Earth.

With these engines it is possible to get to nearby solar systems within a few years to decade or two, but is seemingly not done for obvious reasons.

Both Plasma and EM shields must be operating at these speeds, and only baseline impulse engines can be used without shielding, if cosmic radiation and micro meteors don't kill the crew first.