Astronauts warned not to masturbate in space as one session can 'impregnate 3 females'

Astronauts have been warned not to masturbate in space because it poses the risk of impregnating three females. 

Self-pleasuring is banned in zero gravity amid fears any floating semen could leave female astronauts pregnant

The bizarre revelation was made on US chat show king Conan O’Brien’s Needs A Friend podcast.

During recording, Conan asked a Nasa engineer if he had ever sent porn to the International Space Station.

The engineer, identified only as Smythe, told him: "No, none of that."

And O’Brien went on: "Does porn work in zero gravity? It goes everywhere."

Smythe told him: "Three female astronauts can be impregnated by the same man on the same session... it finds its way."