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, who is set to take up residency onboard the orbiting laboratory in November, has embraced the connection between their numerical designation and "The Hitchhiker's Guide to the Galaxy," the Douglas Adams' sci-fi franchise, adopting its imagery and slogans for their official poster and unofficial patch.