Check this insanely good painting by the very talented Jeremy Geddes - you can see it at higher resolution at his website, and his blog is also definitely worth checking for some more incredible images.
Here's a different kind of space art... see what I did there? This is the B-side to the awesome 'Nous Savons Tous' single (originally from the 'Trip In The Center Head' LP, 1977), released in 1978 on IF Records.
Space Art - Mélodie Moderne
Space Art on Discogs
For the B-side to 'I Want More', German Krautrock pioneers Can created perhaps the first ever bonus beats in the form of '... And More', released on Harvest/Virgin in 1976. It's a killer hypnotic, organic groove, although sadly there's only 2 minutes 55 seconds worth of it. Begging for an edit...
Can - ... And More
Can on Discogs