Actors, astronauts, writers and many others poured out their emotions on Twitter Friday as news broke that Leonard Nimoy, Mr. Spock from TV’s ‘Star Trek,’ had died.

“Live long and prosper” was the message fans remembered Nimoy by in the hours after his death , recalling the phrase his character often used in the popular sci-fi series.

Nimoy’s poetic final Twitter message also went viral. “A life is like a garden,” he wrote, just one day before he was hospitalized with chest pains. “Perfect moments can be had, but not preserved, except in memory.”

Nimoy's 'Star Trek' co-star William Shatner said he loved him "like a brother." Shatner's Captain Kirk and Nimoy's Spock played best friends in the television series and movies.

Actor George Takei, who played Sulu in 'Star Trek,' also expressed his sadness.



Chris Hadfield, former Canadian astronaut and commander of the International Space Station, thanked Nimoy for inspiring him to look to the stars.

NASA tweeted a photo of Nimoy and other ‘Star Trek’ cast members from a 1976 visit to see the Enterprise, a space shuttle named after the ship on the television show.

Actor Zachary Quinto, who took over the role of Spock in 2009’s ‘Star Trek’ reboot, said he will miss the actor “every day.” Quinto and Nimoy actually crossed paths in the film, with Nimoy playing a version of Spock from the far future.

Wil Wheaton, who played Wesley Crusher on the 1990s series ‘Star Trek: The Next Generation,’ paid tribute to Nimoy for helping launch the sci-fi franchise that has been around for more than 50 years.

Many thanked Nimoy for the role he played in shaping their childhoods as the logical half-Vulcan Mr. Spock.

Others went back to YouTube to see his final moments as Spock on film, along with his character’s death scene in ‘Star Trek II: The Wrath of Khan.’

Several people recalled Nimoy’s various other pop culture appearances, including his cameos on ‘The Simpsons’ and an odd-ball song about ‘The Hobbit’ he recorded in the 1960s.

Tributes poured in from all corners of the Internet.