Aliens on Earth is a different modern view of our ancient past. There are many legends from all around our world of extraterrestrial beings guiding human development in science and construction. At a period in the distant past, when the human race was still in the 'hunter gather' stage of evolution a significant change occurred with the arrival of extraterrestrials on Earth. There is irrefutable evidence in many lands of ancient ruins and artefacts that were far beyond the construction capabilities of ancient humans. Who were these "gods" to the primitive inhabitants of our ancient past? And are they still with us?