Short Sharp Science: How Earthly life could populate space by panspermia – http://www.newscientist.com/blogs/shortsharpscience/2012/04/reverse-panspermia.html
(https://www.frederickcalica.com/?p=3365679)Short Sharp Science: How Earthly life could populate space by panspermia – http://www.newscientist.com/blogs/shortsharpscience/2012/04/reverse-panspermia.html
(https://www.frederickcalica.com/?p=3365679)