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Almost akin to orange soil moment on moon?<br /><br />---------------------------------------------------------------<br /><br /><br />Nasa says its robot rover Spirit has made one of its most significant discoveries on the surface of Mars. <br /><br />Scientists believe a patch of ground disturbed by the vehicle shows evidence of a past environment that would have been perfect for microbial life.<br /><br /><br />http://news.bbc.co.uk/1/hi/sci/tech/7137793.stm