| 0 | - | cover | 1 | pencils: Will Eisner; inks: Will Eisner, Will Eisner Shop | |
| 1 | - | promo (ad from the publisher) | 1 | letters: typeset | |
| 2 | Giant of Jupiter | comic story | 5 | pencils: Alex Blum; inks: Alex Blum | A Jovian giant (villain, introduction) |
| 3 | - | comic story | 4 | pencils: Bob Powell; inks: Bob Powell | Blaga Daru (villain); Jack North; Chub (introduction) |
| 4 | The Dinosaur Men of Mercury | comic story | 7 | pencils: Art Peddy; inks: Art Peddy | Mimi Wilson; Mercurians (villain, introduction, death) |
| 5 | - | comic story | 5 | script: ? [as Hans Corben] | Auro, Hardwich |
| 6 | The Destruction of the Atomic Universe | comic story | 7 | pencils: Nick Cardy; inks: Nick Cardy | Don Granval (introduction): Claire (introduction); John (introduction); Queen of a micro-world (introduction); Monsters of the micro-world (villain, introduction) |
| 7 | - | comic story | 7 | script: Herman Bolstein | Pytho (villain, introduction) |
| 8 | The Star Pirates | text story | 2 | script: Lin Davies | Captain Dexter Ames |
| 9 | - | comic story | 6 | script: Bob Jordan; pencils: Gene Fawcette; inks: Gene Fawcette | Torga (villain, introduction) |
| 10 | The Ray Pirates of Venus | comic story | 5 | pencils: Henry Kiefer; inks: Henry Kiefer | Queen Veloptan (of Venus) (introduction); Dr. Escalda (introduction); Lacidar (introduction); King Todrax (of Mercury) (villain, introduction, death) |
| 11 | - | comic story | 4 | script: Allison Brant; pencils: Gene Fawcette; inks: Gene Fawcette | A Grand Councilman (introduction); Brenda (councilman's daughter, introduction); An alien king (villain, introduction) |
| 12 | - | comic story | 6 | script: Charles Quinlan Sr.; pencils: Charles Quinlan Sr.; inks: Charles Quinlan Sr. | Crash Barker (introduction, origin); Wheel Barrow (introduction, origin); Betty (introduction, origin); Bart Clay (villain, introduction); Hugo and other enemy agents (villain, introduction) |
| 13 | - | comic story | 6 | script: ? [as Beekman Terrill] | President of Earth; Gregor (villain, introduction) |
| 14 | - | promo (ad from the publisher) | 1 | letters: typeset | |