Greatest hits: When space and music collide

coondoggie writes: "It seems that space travel and music have been forever linked and a number of artists from the recent Will.i.am song from the Mars Curiosity rover to country legend Buck Owens on Apollo, many artists have written or performed specific music for many different NASA and other space agencies world-wide. Here we take a look and in some cases a listen to some of the greatest space-music collaborations."