The existence of aliens has been a mystery and it only keeps getting intriguing day by day. As more and more scientists are working on ways and techniques to study the extra-terrestrials there are other theories being propagated side by side. Now a NASA scientist has given another angle to the subject that aliens might have already visited the earth and we might have not even noticed it because of their appearance. Silvano P Colombano, a computer scientist says that aliens have been very different from what we have portrayed them as and thus they would have remained undetected till now. Aliens Lived Underground on Mars Billions of Years Ago, Finds New Study.
While some theories in the past talk of the existence of aliens on Mars, or a million of years ago, NASA scientist focuses on their presence right along with us. Colombano has written in his story, "The size of the ‘explorer’ might be that of an extremely tiny super-intelligent entity. If we adopt a new set of assumptions about what forms of higher intelligence and technology we might find, some of those phenomena might fit specific hypotheses, and we could start some serious enquiry." He says that the experts should look into alien civilisations more often and in detail. Russian Time-Traveller Claims He Met Aliens and Spoke to Them About the Earth, See Video to Know What Extraterrestrials Think of Us!
He basically stresses on the fact that we humans haven't looked ahead into a superior race which has evolved more than we have. Alien life could be way different than what we have imagined and thus we might have completely missed it. While we concentrate on our technological progress, we might have completely ignored the probably tiny creatures residing or existing much before us. So maybe there was an alien right next to you! Meanwhile, counter theories to this have also cropped up. The identification of some alien technology could have been really small by the scientist's understanding. So the mystery about aliens and their visit to the earth once again remains mysterious.