Hollywood is mourning the loss of Leonard Nimoy.
The beloved actor, who was best known for his role as Spock in the hit Star Trek series, passed away today at the age of 83.
His wife, Susan Bay Nimoy, confirmed his passing to the New York Times, citing the cause of his death as end-stage chronic obstructive pulmonary disease.
Nimoy was reportedly hospitalized last week for chest pains, but was tweeting as recently as Monday, when he wrote: "A life is like a garden. Perfect moments can be had, but not preserved, except in memory." He signed off with his signature, "LLAP [Live Long and Prosper]."
Here's how celebs are paying tribute to the beloved actor: