NASA scientist: Tiny aliens of the non-carbon-based kind may have already visited Earth
Special to CosmicTribune.com It’s possible that extraterrestrials have already visited Earth and humans never even noticed, a NASA scientist said. “The size of the ‘explorer’ might be that of an extremely tiny super-intelligent entity,” Professor Silvano P. Colombano of NASA’s Ames Research Center in California wrote in a recently published paper on SETI (search for […]