Dr. Silvano P. Colombano has some eccentric theories about alien life visiting Earth. Yet he isn’t just some crackpot pseudoscientist – in fact, he actually works for NASA. And in a recent report, the researcher has suggested that extraterrestrial beings might once have been on our planet.
Of course, Colombano is far from the only scientist to suggest the existence of alien life. Indeed, there is actually an equation that seeks to encourage people within the field to search for such life. Known as the Drake equation, it’s used to approximate the number of potential alien civilizations in our galaxy, the Milky Way.
The Drake equation was concocted in the early ’60s by Frank Drake, an astronomer from the United States. The mathematical statement is not intended to calculate the actual number of alien civilizations in the galaxy. Rather, it brings into focus other factors that must be considered within more stringent efforts to search for alien life.