...."ASTRONOMY DOMINE"
...such as "Atronomy Domine".
PINK FLOYD FOREVER!!! Greatest music ever created. Unique.
On a more serious note - I do agree totaly with your statement above. Only the early Floyd albums are pervaded by space, cosmos, the unknown and strange. Starting with Atom Heart Mother, they began exploring the human essence and it's bizarre twists and turns, which followed with themes about the loneliness of the modern man (Dark Side of the Moon & Wish You Were Here - tribute to Syd Barrett, Animals), and later in their works (when Roger Water started to over-influence the feeling of their music) the effects of war on us and its lingering effect (The Wall and The Final Cut).
Although not a rock band (despite having heard people label them as "space rock"), a notable mention is "Tangerine Dream"! Especially their early 70's albums which are an instrumental epic of ecliptic proportions.