| Issue | #1 |
| Published | April-May 1951 |
| Cover Price | 0.10 USD |
| Pages | 52 |
| Editing | Whitney Ellsworth (credited), Julius Schwartz (actual) |
| Notes | Lots of information supplied by Arthur Lortie, 9/06 |
| Characters | Lyle, Ora |
| Genre | science fiction |
| Pencils | Carmine Infantino |
| Inks | Frank Giacoia |
| Notes | Lots of information supplied by Arthur Lortie, 9/06 |
| Characters | Knights of the Galaxy (intro); Lyle; Prof Vorko; Commander Artho; Korvo; Ora |
| Genre | science fiction |
| Script | Robert Kanigher [as Anthony Dion] |
| Pencils | Carmine Infantino |
| Inks | Joe Giella |
| Genre | science fiction |
| Script | John Broome [as Robert Stark] |
| Pencils | Howard Purcell |
| Inks | Joe Giella |
| Synopsis | Speculation on mankind's fate is presented |
| Genre | science fiction |
| Pencils | Virgil Finlay |
| Inks | Virgil Finlay |
| Reprinted | From Real Fact #6 (02/1947) |
| Genre | science fiction; humor |
| Script | Hy Mankin |
| Pencils | Hy Mankin |
| Inks | Hy Mankin |
| Characters | Doctor Brady; Jim Huston; Nan; Professor Edwards |
| Synopsis | Spores from outer space present a deadly challenge to humanity. |
| Genre | science fiction |
| Script | Gardner Fox |
| Pencils | Frank Frazetta |
| Inks | Frank Frazetta |
| Notes | Page count by Greg Theakston, 2002-05-29 (Per Sandell ed.) |
| Reprinted | in Mysteries in Space: The Best of DC Science Fiction Comics (Simon and Schuster, 1980 series) #nn (October 1980); in The Masterworks Series of Great Comic Book Artists (DC, 1983 series) #2 (July 1983) |
| Genre | superhero |
| Script | Bill Schreiber (signed) |
| Pencils | Bill Schreiber (signed) |
| Inks | Bill Schreiber (signed) |
| Genre | superhero |
| Script | Jack Schiff |
| Pencils | Win Mortimer |
| Inks | Win Mortimer |
| Letters | Ira Schnapp |
| Genre | fact |
| Script | Julius Schwartz? |
| Pencils | Raymond Perry? |
| Inks | Raymond Perry? |
| Letters | typeset |
| Genre | fact |
| Script | Julius Schwartz? |
| Pencils | Morris Waldinger? |
| Inks | Tommy Nicolosi? |
| Genre | science fiction |
| Script | John Broome |
| Pencils | Alex Toth |
| Inks | Bernard Sachs |
| Notes | Page count from Christoph Melchert, 5/12/2006. |