Aliens SHOCK: ET could have ALREADY visited Earth, Nasa scientist claims

Silvano P. Colombano, who works in NASA’s Intelligent Systems Division, said there were certain aspects of UFO sightings that cannot be explained. In a paper published on SETI, he said there may be some signals we have missed when it comes to looking for UFOs. He said: “In the very large amount of ‘noise’ in UFO reporting there may be ‘signals’, however small, that indicate some phenomena that cannot be explained or denied.” The arrival of a UFO could have been overlooked because of the unlikelihood of interstellar travel, he said but this is something he said aliens have mastered.

He said: “Even if the speed of light continues to be an unbreakable barrier, over spans of thousands of years civilisations could probably make interstellar journeys.” 

This should prompt scientists to take a more “aggressive” approach to searching for aliens and rethink assumptions about alien life.

Professor Colombano said: “I think we need to re-visit even our most cherished assumptions.

“How might that change the above assumptions about interstellar travel? Our typical life-spans would no longer be a limitation (although even these could be dealt with multi-generational missions or suspended animation), and the size of the “explorer” might be that of an extremely tiny super-intelligent entity.”

With his thoughts on interstellar travel, the NASA scientist thinks we have missed alien life because they might be different from the carbon-based organism like humans.  

He said: “I simply want to point out the fact that the intelligence we might find and that might choose to find us (if it hasn’t already) might not be at all be produced by carbon based organisms like us.”

He also thinks scientists focus too much on modern technology and this is why it might be difficult to imagine technologies produced by aliens before us. 

He said: “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.”

For a more aggressive approach to alien searching to happen, Mr Colombano suggests scientists need to be show a “willingness to stretch possibilities as to the nature of space-time and energy”.