- 1 Direct cargo mission
- 2 Colonization mission
- 3 Manned resupply mission
- 4 Phobos boost mission-article in development
- 5 Mars Direct
- 6 Mars for less
- 7 Aldrin cycler
- 8 SpaceX Starship
- 9 References
- 10 External links
- 11 See also
The cost of the mission depends on the cost of transportation plus the cost of the cargo. The cost of transportation varies widely depending on if the infrastructure/vehicles is recovered or expended.
A type of one-way mission for colonization, utilizing a man-rated version of the direct cargo mission. This type of mission may no longer be relevant, as technology should provide return capabilities to colonization, or Settlement, missions.
The cost of the mission depends on the cost of transportation plus the cost of life support. The cost of transportation varies widely depending on if the infrastructure/vehicles is recovered or expended.
A two-way manned mission to resupply a semi-autonomous colony or a manned outpost. With the advent of self navigating ships, this type of mission may no longer be relevant.
Phobos boost mission-article in development
An unmanned mission to the moon Phobos, using a VASIMR drive to slowly spiral it out into a higher orbit.
A plan by Robert Zubrin, the head of the Mars society, to send people to Mars and back. This was designed to lower costs, increase the exploration time on Mars, and improve safety.
Mars for less
Basically Mars Direct, but with the parts broken up so that they can be launched on Medium Lift Launch Vehicles (MLLVs), such as the Ariane V, Delta IV and Proton. Zubrin also suggested a Mars mission using Falcon Heavies & Falcon 9 space craft. 
Mission architecture by second person to walk on the moon, Edwin "Buzz" Aldrin, to have a habitat, a cycler, in a continuous orbit between Mars and Earth.