Leonard Nimoy Death: ‘Star Trek’ Cast, Celebs React

With many using the hastag #LLAP (“Live long and prosper"), former “Star Trek” cast members and celeb fans paid their respects to Leonard Nimoy, who died Friday at age 83.

William Shatner: "I loved him like a brother. We will all miss his humor, his talent, and his capacity to love."

George Takei: “Today, the world lost a great man, and I lost a great friend. We return you now to the stars, Leonard. You taught us to 'Live Long And Prosper,' and you indeed did, friend. I shall miss you in so many, many ways.”

Jonathan Frakes: “#LLAP RIP to the best First Officer. @TheRealNimoy”

Zachary Quinto:

LeVar Burton: “God Bless You, Leonard Nimoy... May Angels guide thee to thy rest! #agoodman #talented #funny #awesome”

NASA: “RIP Leonard Nimoy. So many of us at NASA were inspired by Star Trek. Boldly go...”

[photo: Twitter]

Wil Wheaton: “We stood on your shoulders, and wouldn't have had a galaxy to explore if you hadn't been there, first. Thank you, Leonard, Rest in peace.”

Nathan Fillion: “@TheRealNimoy I have been, and always shall be, your fan. Thank you.”

Jeri Ryan: “RIP, Mr. Nimoy. You really did live long and prosper, and we were all the richer for it.”

Roseanne Barr: “HAIL HAIL, A GENIUS HAS VACATED THIS REALM! #LeonardNimoy gets beamed up 2 Zeir Anpin-the Endless Intelligence of Infinity. Rest in Peace.”

Ben Stiller:

President Obama: "Long before being nerdy was cool, there was Leonard Nimoy. Leonard was a lifelong lover of the arts and humanities, a supporter of the sciences, generous with his talent and his time. And of course, Leonard was Spock. Cool, logical, big-eared and level-headed, the center of Star Trek's optimistic, inclusive vision of humanity's future. I loved Spock. In 2007, I had the chance to meet Leonard in person. It was only logical to greet him with the Vulcan salute, the universal sign for “Live long and prosper.” And after 83 years on this planet – and on his visits to many others – it's clear Leonard Nimoy did just that. Michelle and I join his family, friends, and countless fans who miss him so dearly today."

The Simpsons: