Image: Expedition 42 poster
The official crew poster for the International Space Station’s 42nd expedition parodies “The Hitchhiker’s Guide to the Galaxy.” NASA astronaut Terry Virts and Russia’s Anton Shkaplerov portray the two-headed Zaphod Beeblebrox, Russia’s Alexander Samokutyaev is Humma Kavula, NASA’s Butch Wilmore is Arthur Dent, Russia’s Elena Serova is Ford Prefect and Italy’s Samantha Cristoforetti is Trillian. NASA’s Robonaut 2 guest-stars as Marvin the Paranoid .

Robert Pearlman, CollectSpace.com 
What do astronauts and cosmonauts, a towel and a paranoid android have in common? The answer is 42. 
The International Space Station’s Expedition 42 crew members, who are due to assemble aboard the orbiting laboratory in November, have embraced the between their numerical designation and “The Hitchhiker’s Guide to the Galaxy,” the Douglas Adams sci-fi franchise, by adopting its imagery and slogans for their official poster and unofficial patch.
“I was when I was assigned to an [space station] expedition, mostly because I was assigned to an ISS expedition, of course, but of the excitement was that it was 42,” Samantha Cristoforetti, an Italian astronaut representing the European Space Agency, said in a recent press briefing. “ a big science fiction fan, and of the things I really love is this ‘trilogy in five parts’ that some of you might know.” 
“The Hitchhiker’s Guide to the Galaxy” is the first of five comedic science fiction books penned by Adams, as well as the title of the book within the novels. The story follows Arthur Dent as he narrowly escapes the destruction of the Earth and, with his Ford Prefect, explores the galaxy in search of a decent cup of tea and the meaning of everything. 
“In this book, it is kind of funny, but ’42’ is the ‘answer to the ultimate of life, the universe and everything,'” Cristoforetti said. “Now, nobody knows what the is, but 42 is the answer.”
Following a trend that began during the now-retired shuttle program, the Expedition 42 crew — Cristoforetti, together with commander Butch Wilmore and flight engineers Terry Virts, Alexander Samokutyayev, Elena Serova and Anton Shkaplerov — selected a poster to parody for their official crew poster.