Science Fiction in Music by VaccaD

Question 11

For the Earth is old and gray, little darling we'll away / But my love this cannot be / For so many years have gone, though I'm older but a year / Your mother's eyes from your eyes cry to me.

WHAT SONG are these lines taken from? Given that the song explores the effects of temporal dilation from interstellar travel at relativistic speeds, it's perhaps not surprising that the composer now has a PhD in astrophysics.

'39 (by Queen)