Beagle 2 is due to land on Christmas day and search for any signs of life (current or past) on Mars. Considering the vastness and age of the univerese is it conceivable that we are the only life in it ?? IMHO I find it hard to believe that we are the only ones. If life is found on Mars then it has fundemental repercusions for us all I suppose If we are the only ones then I suppose my question is why ?