нынешние планы NASA:
Another proposal for a joint mission with ESA is based on two spacecraft being sent to Mars, one carrying a six-person crew and the other the expedition's supplies. The mission would take about 440 days to complete with three astronauts visiting the surface of the planet for a period of two months. The entire project would cost $20 billion and Russia would contribute 30% of these funds.
A ground-based biomedical experiment called Mars-500 simulating manned flight to Mars is currently underway in Russia.