Prof Cox, who hosts the show with comedian Dara O'Briain, said he had hoped to point the Jodrell Bank telescope at the planet Threapleton Holmes B after it was discovered live on air last year and listen for signs of life.
But he claimed he was prevented from doing so because the Corporation was concerned that any aliens discovered on the planet could swear or violate other BBC regulations.
I really like the thoughts of boozy sweary aliens giving it the big un live on air
Dear you guys. Words cannot express how much I hate you guys. As we fight our way northward into the great unknown, only that one thing remains certain: that I hate you guys with every tired muscle in my confederate body. We have taken Topeka and I must rally the men onward to Missouri. Because I will not stop until we have won it all, and you guys are my slaves. Because I hate you guys. I hate you guys so very very much. Yours, General Cartman Lee.