Leonard Nimoy is gone. The actor died this morning at his Bel Air home in Los Angeles. His passing has been confirmed by his wife, Susan Bay Nimoy, who says the cause of his death was late-stage chronic obstructive pulmonary disease (COPD). Leonard Nimoy said last year his disease was caused by years of smoking, though he had given up the habit some 30 years ago. According to The New York Times, Nimoy was hospitalized earlier in the week.