A manned antimatter-catalyzed microfission/fusion powered spacecraft preforming a braking maneuver at Mars. Note that the spacecraft appears "backwards"; this is because it is firing it's engine in it's direction of flight in order to slow down. Craft like this carry scientists, tourists, and immigrants to Mars. Thanks to it's extremely powerful engine, it can make the trip in just over a month on just 30 nanograms of antiprotons.
A pellet comprised of Deuterium, Tritium, and Uranium-238 is shot into the reaction chamber, where it is imploded with an array of powerful ion beams. It is then bombarded with antiprotons, which anihilate a small portion of the pellet, casuing the Uranium-238 to undergo nuclear fission. This reaction then ignites a fusion reaction between the Deuterium and Tritium. The fusion exhaust then produces thrust.