Sunday, 16 June 2019 | 11:45 WIB

Have Aliens Already Visited Earth?

Have Aliens Already Visited Earth? (nbc)

JAKARTA, NNC -- A NASA scientist has revealed a theory about intelligent alien life that has likely already visited Earth. The scientist alsobelieves that the current views on extraterrestrial life is too narrow.

Silvano P. Colombano, who works in the NASA Intelligent Systems Division, believes that earthlings have missed visits from alien life forms, claiming that it can be very different from human life.

"I just want to point out the fact that intelligent beings that we might find and who might choose to find us (if it doesn't exist) might not be produced at all by carbon-based organisms like us," Colombano wrote in a paper presented at the Moon Decoding Alien Intelligence Workshop last March by Search for Extraterrestiral Intelligence.

The lives of extraterrestial beings may have far surpassed human technology, Colombano said, and might even have mastered interstellar travel.

"We need to revisit even the assumptions that we value most," he wrote. "How can it change the above assumptions about interstellar travel?" he said, quoted by Nzherald as reported by the Daily Mail.

"Our distinctive life span is no longer a limitation (although this can also be handled with multi-generation or suspended missions), and the size of 'explorers' may be a very small super-intelligent entity."

"Considering further that technological developments in our civilization began only about 10 million years ago and have seen the emergence of scientific methodology only in the last 500 years, we can suppose that we might have real problems predicting technological evolution even for the next thousand years, especially 6 million times that amount! "

Colombano also warned that radio waves could be outdated.

He called on physicists to take part in speculative physics, based on the strongest theory but "with some willingness to stretch possibilities regarding the nature of space-time and energy" and "consider the phenomenon of UFOs worthy of study".