We have not found a good reason that some sort of living thing could not live on Mars. There is water, and the surface of Mars is certainly warm enough. But, no living things have been detected yet on Mars by the several rovers that we have sent to Mars' surface.
Our current level of technology does not provide a suitable, long term functional plan for any form of colony on Mars (At our current technology level)
Mars is sandy.
The surface area of planet Mars is 144,798,500 km2
Mars is a very difficult environment to inhabit. Not only would inhabitants need food, they will also need water, air, energy and suitable protection from the sun and the atmosphere. All of these will need to be transported across space in a journey that will takes many months.
Because Mars does not have an atmosphere suitable for human life.
We have not found a good reason that some sort of living thing could not live on Mars. There is water, and the surface of Mars is certainly warm enough. But, no living things have been detected yet on Mars by the several rovers that we have sent to Mars' surface.
Our current level of technology does not provide a suitable, long term functional plan for any form of colony on Mars (At our current technology level)
No. Curiosity will live and die on the surface of Mars.
For a short amount of time with enough food and water they will be able to orbit Mars.
Since Mars doesn't have enough atmosphere to allow people to breathe, people on Mars will need to live in enclosed habitats. That can be either in sealed dwellings on the surface, within bubbles on the surface, or underground. Given that Mars is occasionally struck by space rocks (we don't think there's enough atmosphere to create a decent "meteor") it would probably be safest to live in underground cities.
Of course, they aliens are hiding underneath of surface in gas pockets.
Rocks and The Mars Rovers are on the surface of the planet Mars.
Mars is sandy.
100% of the surface of mars is land. There is no surface water on mars
We do not live in Mars, we live in the Earth.
The surface area of planet Mars is 144,798,500 km2