Leonard Nimoy, best known for his role as the endlessly logical Mr. Spock on Star Trek, passed away Friday morning at his home in Los Angeles. Earlier this week, he was hospitalized after suffering severe chest pains.

Wife Susan Bay Nimoy confirmed the star's death, confirming that Nimoy ultimately passed away as a result of end-stage chronic obstructive pulmonary disease, or COPD. Nimoy had been battling the disease since late last year, and attributed his ailment to cigarette smoking, which he had given up some 30 years ago.

Though his artistic interests ranged from music and poetry to photography and art, Nimoy was best known as Star Trek's Mr. Spock, the ever-level-headed Vulcan whom Nimoy immortalized with the "Live long and prosper" catchphrase.

Nimoy first took the role of Spock in 1966 and continued playing the role through the Star Trek series and several films. He was 83.