| Issue | #1 |
| Published | August-September 1950 |
| Cover Price | 0.10 |
| Pages | 52 |
| Editing | Whitney Ellsworth (credited); Julius Schwartz (actual) |
| Genre | science fiction |
| Characters | Chris KL-99 (intro) |
| Script | Edmond Hamilton |
| Pencils | Howard Sherman |
| Inks | Howard Sherman |
| Genre | superhero |
| Script | Jack Schiff |
| Pencils | Win Mortimer |
| Inks | Win Mortimer |
| Characters | Darwin Jones |
| Genre | science fiction |
| Script | David V. Reed (signed) |
| Pencils | Paul Norris |
| Inks | Bernard Sachs |
| Notes | title corrected per Steven Grant 2/23/09 |
| Characters | H. G. Wells |
| Genre | fact |
| Script | Jack Schiff; Mort Weisinger; Bernie Breslauer |
| Pencils | Dick Sprang [as Richard Sprang] |
| Inks | Dick Sprang |
| Editing | Jack Schiff |
| Notes | story about HG Wells |
| Reprinted | from Real Fact Comics (DC, 1946 series) #3 |
| Genre | science fiction |
| Script | Gardner Fox (signed) |
| Pencils | Jim Mooney |
| Inks | Sy Barry |
| Notes | writer correction 2/23/09 from Steve Grant |
| Genre | fact |
| Script | Julius Schwartz |
| Pencils | Morris Waldinger |
| Inks | Tommy Nicolosi |
| Pencils | Raymond Perry |
| Inks | Raymond Perry |
| Notes | text |
| Characters | Jim Barnes; Dr. Charles Cargraves: General Thayer |
| Genre | science fiction |
| Script | Gardner Fox (adaption); Robert Heinlein (original story) |
| Pencils | Curt Swan |
| Inks | John Fischetti |
| Editing | Jack Schiff |
| Notes | adaptation of the 1950 George Pal movie |
| Genre | fact |
| Script | Julius Schwartz |
| Pencils | Morris Waldinger |
| Inks | Tommy Nicolosi |