Strauss' “Blue Danube” waltz has finally made it into space, nearly a half-century after missing a ride on NASA's Voyagers.

Strauss' “Blue Danube” waltz is heading into space this month to mark the 200th anniversary of the composer's birth.

From its 18th century roots, Vienna’s celebrated ball season has evolved and now involves teenagers learning to waltz by watching YouTube videos and ladies shedding their elbow-length gloves to better swipe on smartphones.