On February 4, 2008, NASA beamed a transmission of "Across the Universe" into space. From the NASA website:
The transmission was aimed at the North Star, Polaris, which is located 431 light years away from Earth. The song will travel across the universe at a speed of 186,000 miles per second. Former Beatle Sir Paul McCartney expressed excitement that the tune, which was principally written by fellow Beatle John Lennon, was being beamed into the cosmos.
"Amazing! Well done, NASA!" McCartney said in a message to the space agency. "Send my love to the aliens. All the best, Paul."
Lennon's widow, Yoko Ono, characterized the song's transmission as a significant event.
"I see that this is the beginning of the new age in which we will communicate with billions of planets across the universe," she said.