In 2011, Bas Lansdorp and Arno Wielders laid the foundation to begin the Mars One mission plan. The first step included holding discussion meetings with potential aerospace component suppliers in the United States, Canada, Italy, and the United Kingdom. The mission architecture, budgets, and timelines were then solidified after receiving feedback from the supplier engineers and business developers. This resulted in a baseline design for an achievable mission of permanent human settlement on Mars with existing technology.
In April 2013, the Astronaut Selection Program (ASP) was launched at press conferences in New York and Shanghai. The selection program required an online application and proceeded with video applications and personal interviews. The subsequent selection rounds will consist of group challenges and simulations.
At program's end, six teams of four individuals will have bene chosen for training. New ASPs will begin every year to replenish the training pool regularly. In addition, during this time an analogue of the Mars habitat is to be constructed on Earth for technology testing and training purposes.
The first teams of candidates are expected to be selected and start training in 2017. They will train together until the launch in 2026. The group's ability to deal with prolonged periods of time while sequestered in a remote location will be the most important part of their training. Thus, they will learn how to to repair components of the habitat and rover, train in medical procedures, and learn to grow food in the habitat.
Every group spends several months of each training year in the analog outpost to prepare for its mission to Mars. The first outpost simulation location, a Mars-like terrain that is relatively easy to reach, will be chosen. A second training outpost will be located at a more remote environment like the Arctic desert.
A demonstration mission to Mars will be launched in 2020. This mission will provide proof of concepts for some of the technologies that are crucial for a human mission to Mars.
A communications satellite will also be launched, which will be placed into stationary Mars orbit. This satellite will enable communications between Earth and Mars on a 24/7 basis, except when the sun is between the two planets, and can also relay images, videos, and other data from the Mars surface.
One rover and one trailer will be sent to Mars. The rover can use the trailer to transport the landers to the outpost location. On Mars, the rover drives around the chosen region to find the best location for the settlement. Ideally, the settlement can be located far enough north for the soil to contain enough water, close enough to the equator to produce maximum solar power, and on flat enough terrain to facilitate the construction of the settlement.
When the settlement location is determined, the rover will prepare the surface for the arrival of the cargo missions. It will also clear large areas for the placement of solar panels.
A second communications satellite will be launched into orbit around the Sun. It will follow the same orbit as the Earth does but trails 60 degrees behind it in the L5 Lagrangian point of the Sun-Earth system. Together with the first ComSat in Mars orbit, they will enable 24/7 communication with Mars, even when the Sun is between the two planets.
A second rover, two living units, two life support units, and a supply unit are sent to Mars. In 2025, all units will land on Mars using a rover signal as a beacon.
The six cargo units will land up to 10 km away from the outpost on Mars. The rover will pick up the first life support unit using the trailer, place the life support unit in the correct location, and deploy the thin-film solar panel of the life support unit. The rover will then be able to connect to the life support unit to recharge its batteries much faster than using only its own panels, which will allow it work much more efficiently. The rover will pick up all the other cargo units and deploy the thin-film solar panel of the second life support unit and the inflatable sections of the living units.
The life support unit will be connected to the living units by a hose that can transport water, air, and electricity. Once these are connected, the Environmental Control and Life Support System (ECLSS) will be activated. The rover will feed Martian soil into the ECLSS and the water will be extracted from this soil by evaporating its subsurface ice particles in an oven. The evaporated water is condensed back to its liquid state and stored, and part of the water is used for producing oxygen. The nitrogen and argon filtered from the Martian atmosphere will make up the other components of the breathable air inside the habitat.
Before the first crew begins its journey, the ECLSS will have produced a breathable atmosphere of 0.7 barometric pressure, 3,000 liters of water, and 240 kg of oxygen which will be stored for later use.
The rover will also deposit Martian soil on top of the inflatable sections of the habitat to shield it from radiation.
In 2026, the components of the Mars Transit Vehicle (MTV) will be launched into Earth orbit after receiving the green light on the status of the systems on Mars. First, a transit habitat and a Mars lander with an assembly crew aboard will be launched into Earth orbit. The assembly crew will dock the Mars lander to the transit habitat. About thirty days later, two propellant stages, the boosters that will "kick" the transit vehicle from low Earth orbit to Mars transfer orbit, will be launched and connected.
Second, the first fully trained Mars crew will be launched into the same Earth orbit. Once in orbit, this crew will switch places with the assembly crew, which will descend back to Earth. After a final check of systems on Mars and on the transit vehicle, engines of the propellant stages will be fired and the MTV will be launched into a Mars-transit trajectory. This is the point of no return for the Mars crew.
The cargo for the second crew will be launched toward Mars in the same month as the launch of the first Mars settlers.
Approximately twenty-four hours before landing, the crew will move from the transit habitat into the landing module, bringing some of the supplies from the transit habitat. The landing module will then detach from the transit habitat, which is too large to land on Mars. The transit habitat is discarded and stays in orbit around the sun.
The lander is exactly the same as those used for previous unmanned missions. This will ensure that the human crew lands in a system that has been tested eight times already. Upon landing, the crew takes up to forty-eight hours to reacclimate to gravity after spending six to eight months in space. They will leave the lander in their Mars suits and will be picked up by the rover.
Next, the astronauts will enter the settlement through an air lock and spend the next few days in one of the living units, recovering and settling into their new environment.
The settlers will deploy the rest of the solar panels after their acclimatization period. They will also install the hallways between the landers and set up food production units.
The cargo for the second crew will land within a few weeks after the first crew has landed. This cargo will also be picked up and installed, adding to the redundancy in the settlement.
Redundancy is extremely important because, unlike the crew aboard the International Space Station, the Mars One crew can't abandon their mission in case of an emergency. When the first crew lands, it will find the established habitat with good redundancy as, by this time, it will include two living units, each large enough to house the crew of four, and two life support units that are capable of providing enough water, power, and breathable air for the entire crew. When the hardware for the second crew is incorporated into the settlement, it will feature four living units and four life support units, which are enough to sustain a crew of sixteen astronauts.
The second crew will depart from Earth in 2028. The cargo for the third crew is launched with the second crew.
The second crew will land on Mars in 2029 and will be welcomed by the first crew and prepared living quarters. The hardware for the third crew will land a few weeks later and will be added to the settlement. This process will continue as additional crews land every two years.