It's a little known fact, but true. Jean-Luc Picard grew up believing in Yoda. Ever since he saw the little fella in Star Wars, he's kept a picture of him in his Star Trek wallet. And if people knew that, the ratings would have been higher for Star Trek, 'cause everybody loves Yoda.
Interestingly, when the Apollo program kicked off in the 60's, Yoda hadn't even hit the movie screens yet. Too bad, those early astronauts would have loved to have had a mascot! Everybody knows, space travelers have to believe in someone. It's just great universal karma!