Ultimate Space Rock is a various artists compilation album released on June 8, 1999 by Cleopatra Records. 
  Reception
 Professional ratings| Review scores | 
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| Source | Rating | 
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| Allmusic |      [1] | 
 AllMusic gave the collection a rating of one and a half out of five possible stars and said "as a comprehensive document of this underground genre, Ultimate Space Rock's title says it all."[1] 
 Track listing
 Disc one| Title | Artist | 
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| 1. | "Landing on Cydonia" | Farflung | 5:18 | 
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| 2. | "Vision of Infinity" | Farflung | 4:25 | 
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| 3. | "Icarus/Daedalus" | Farflung | 3:49 | 
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| 4. | "The Way the Sky Is" | Farflung | 5:38 | 
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| 5. | "Future Days" | Farflung | 3:22 | 
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| 6. | "See You up There" | Farflung | 7:17 | 
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| 7. | "The Raven That Ate the Moon" | Farflung | 4:58 | 
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| 8. | "Mother Orbis" | Farflung | 5:21 | 
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  Disc two| Title | Artist | 
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| 1. | "INTRO: 7 - 2 - 47> Roswell> New Mexico" |   | 3:10 | 
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| 2. | "Explaining the Unexplained" | Pressurehed | 3:10 | 
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| 3. | "Guiding Ray" | Yamo | 7:34 | 
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| 4. | "Earth Calling" | Hawkwind | 2:59 | 
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| 5. | "Natural Forces" | Synæsthesia | 10:01 | 
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| 6. | "UFO" | Guru Guru | 10:27 | 
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| 7. | "Nebula" | Brainticket | 4:47 | 
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| 8. | "See You Up There" | Farflung | 4:19 | 
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| 9. | "Shapeless Friend" | Surface 10 | 8:03 | 
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| 10. | "Celestial Hysteria" | Melting Euphoria | 6:13 | 
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| 11. | "Shapeshifter" | Dilate | 15:14 | 
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| 12. | "OUTRO: 7 - 4 - 47> The Truth" |   | 1:38 | 
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  Disc three| Title | Artist | 
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| 1. | "INTRO: 8 - ? - 47> Fortworth> Airbase> TX" |   | 1:50 | 
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| 2. | "Sunrise in the Third System" | Tangerine Dream | 4:22 | 
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| 3. | "Artificial Human" | Chrome | 5:44 | 
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| 4. | "A Sprinkling of Clouds" (System 7 Remix) | Gong | 9:57 | 
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| 5. | "Sci-Fi Memento" | Kraftwelt | 5:50 | 
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| 6. | "Surrounded By the Stars" | Amon Düül II | 7:42 | 
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| 7. | "Dimensions Unmeasurable" | The Brain | 11:09 | 
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| 8. | "Spiral Galaxy 28948" | Nik Turner | 4:50 | 
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| 9. | "The Forge of Vulcan" | Spiral Realms | 6:18 | 
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| 10. | "Grid Coordinate-Vorp One" | Anubian Lights | 9:36 | 
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| 11. | "Longing for Daydreams" | Holger Czukay | 5:22 | 
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| 12. | "OUTRO: 9 - 6 - 54> The Future" |   | 1:52 | 
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  Disc four| Title | Artist | 
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| 1. | "Sudden Vertigo (Intro)" | Pressurehed | 1:50 | 
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| 2. | "Red Delta" | Pressurehed | 4:25 | 
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| 3. | "Dead Air" | Pressurehed | 5:44 | 
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| 4. | "God's House" | Pressurehed | 9:57 | 
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| 5. | "Shockneck" | Pressurehed | 5:50 | 
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| 6. | "The Right Stuff" | Pressurehed | 7:42 | 
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| 7. | "Majestic 12" | Pressurehed | 11:09 | 
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| 8. | "Man in Static" | Pressurehed | 4:50 | 
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| 9. | "Time Slip" | Pressurehed | 6:18 | 
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| 10. | "Conscious Control" | Pressurehed | 9:36 | 
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| 11. | "Wet Engines" | Pressurehed | 5:22 | 
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| 12. | "Slo Blo" | Pressurehed | 1:52 | 
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  Personnel
 Adapted from the Ultimate Space Rock liner notes.[2] 
  Release history
   | Region  |  Date  |  Label  |  Format  |  Catalog  | 
  | United States  |  1999  |  Cleopatra  |  CD  |  579  | 
 References