Leonard Nimoy is gone. Spock has finally left this planet and beamed up to cosmic places unknown. He wasn’t the first of the original Star Trek cast to leave us. DeForest Kelly earned that sad distinction back in 1999. Then everyone’s favorite fake Scotsman, James Doohan, followed suit in 2005. So we’ve been prepared for another intergalactic parting, especially when you consider the rest of the cast—William Shatner (age 83), George Takei (77), Nichelle Nichols (82), and Walter Koenig (78)—are all in the twilight of their years.