We go on trekking to explore about animals or birds in the wild nature. Our such exploration extends also to other planets and moons. But here we include also extra-terrestrial living things, that are similar to us, the human beings. Over the years, we read and heard the news that signs of life, like water etc. does exist in other planets and moons. Recently, in December 2012 it has been reported in the news that a flower is found on the surface of Mars - a Martian Flower!
