Terry Virts Tweets Touching Tribute To Leonard Nimoy From Outer Space

While orbiting around Earth on the International Space Station, American astronaut Terry Virts took a minute to pay fitting tribute to Leonard Nimoy, who died on Friday at 83. The late actor's home state of Massachusetts can be seen just to the right of Virts' Vulcan salute .

Nimoy, of course, will forever be known as Mr. Spock from the original "Star Trek" series. On Friday, NASA acknowledged how influential that show had been for generations of astronauts: