Leonard Nimoy, the iconic Mr. Spock from the Star Trek franchise, died today. He was 83.

Getty Images; Frazer Harrison

Nimoy became a science-fiction icon, portraying Spock on the original Star Trek series, and although the series lasted only three season, it continued through numerous movie and series spin-offs.

He died Friday after suffering from chronic obstructive pulmonary disease, it was reported by the New York Times.

Nimoy's career spanned 64 years, beginning in 1951. Most of his work was dramatic, but late in his career, he began appearing in comedic shows such as Becker and The Big Bang Theory.

Nimoy's final tweet appeared this past Monday.