Some interesting picks. Thanks for sharing. Since Bowie carried the day, I'll post one more. Not specifically space related, but best eclectic use of piano in a rock performance. I played piano back then and was hugely a fan of modern music with piano.

Alladin Sane

Also, one more from Elton. This song may seem overplayed to some, but the sycnopation and progressive chords have been a huge influence on what I like in music.