Mars is a fascinating planet, the most like Earth of all the planets in the solar system, and may help us to understand much about the origins of life on Earth. Undoubtedly, it's a wonderful place to explore, especially with augmented reality vision. But though it was quite Earth-like in its first few hundred million years, it is not at all Earth like now. Earth remains by far the most habitable place in our solar system. The most inhospitable places on Earth, such as Antarctica, even in the depths of winter, and at the centre of the continent, is far more habitable than anywhere else in our solar system.