I believe that all inhabitants have origins from outer space *

Many scientist believe that viruses(which are composed of rNA molecules) had origins in space.

* not as far fetched as first appears. When the universe began, then "our world," there was nothing. A "void" as the Bible1 calls it, So where did all the gases, dna come from.

1 Just an example

(I am not particularly religious, I believe what I believe, going to a building where I'm "taught" that there is only "One true God", is not going to change that. But that's a totally different argument.)