Astronauts, President Remember Leonard Nimoy, 'Star Trek's' Spock
Leonard Nimoy said that he shed some tears while watching the new "Star Trek" movie, where he reprises his role as an older Spock who enlightens his younger self.
Credit: John Siuntres

Astronauts, space scientists, science fiction fans and even President Barack Obama are paying tribute to Leonard Nimoy after the "Star Trek" actor's death was announced today (Feb. 27). Read some of our favorite posts about the actor that played the original Mr. Spock below: 

President Barack Obama

NASA astronaut Scott Kelly

Canadian astronaut Chris Hadfield

Space scientist Alan Stern

"Star Trek" actor William Shatner

"Star Trek" actor George Takei



Astronauts pay tribute