Paul McCartney joined the parade of musical stars waking up the crew of the Space Shuttle Atlantis' final mission with a rendition of the Beatles classic "Good Day Sunshine" this morning.

Following in the recent footsteps of his buddy Elton John, as well as R.E.M. lead singer Michael Stipe, McCartney awoke the astronauts with a pre-recorded clip of "Sunshine" followed by an extremely chipper message: "Good morning, guys – wake up! And good luck on this, your last mission. Well done!"

(Random thought: If you throw your alarm clock across the room in zero-gravity, can you still smash it to bits?)

Of course, this morning was hardly the first time Beatles music has been played for the crew across the soon-ending 30-year history of the program. "Good Day Sunshine," a stand-out cut from 1966's Revolver, has been transmitted up to the space explorers three other times, including once directly from a live McCartney concert.

"A Hard Day's Night," "Birthday" and "With a Little Help From My Friends," among others, also have been blasted out into the final frontier.

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