| 0 | - | cover | 1 | pencils: Murphy Anderson; inks: Murphy Anderson; letters: Ira Schnapp | |
| 1 | Superman Says: "It's Smart to Check-- and Doublecheck!" | public service announcement | 1 | script: Jack Schiff; pencils: Win Mortimer; inks: Win Mortimer | |
| 2 | The Seven Wonders of Space! | comic story | 8 | script: Robert Starr; pencils: Murphy Anderson; inks: Bernard Sachs | |
| 4 | Message to the Moon! | comic story | 1 | script: Mort Drucker; pencils: Mort Drucker; inks: Mort Drucker; letters: Mort Drucker | |
| 5 | The Perfect Planet! | comic story | 5.67 | script: Gardner F. Fox; pencils: Frank Giacoia; inks: Frank Giacoia | |
| 7 | Message to Parents | public service announcement | 0.5 | letters: typeset | |
| 9 | Rocket Take Off... | comic story | 1 | script: Mort Drucker; pencils: Mort Drucker; inks: Mort Drucker; letters: Mort Drucker | |
| 10 | The Meteor of Revenge! | comic story | 3.67 | script: Jack Miller; pencils: John Giunta; inks: John Giunta; editing: Mort Weisinger | Martin Lane; John Lawrence |
| 11 | Editorial Advisory Board | promo (ad from the publisher) | 0.33 | letters: typeset | |
| 13 | Odd Facts About Meteors | cartoon | 0.5 | script: Mort Drucker; pencils: Mort Drucker; inks: Mort Drucker; letters: Mort Drucker | |
| 14 | How to Measure the Diameter of the Sun | comic story | 1 | script: Mort Drucker; pencils: Mort Drucker; inks: Mort Drucker; letters: Mort Drucker | |
| 15 | Uranus? | activity | 2 | script: Julius Schwartz; pencils: Raymond Perry; inks: Raymond Perry | |
| 16 | The Martian Horse! | comic story | 5.67 | script: Manny Rubin; pencils: Howard Sherman; inks: Howard Sherman; letters: Ira Schnapp; editing: Mort Weisinger | Dan Harber; Zahoo |
| 17 | The Adventures of Dean Martin and Jerry Lewis | promo (ad from the publisher) | 0.33 | | |
| 18 | Two More Thrilling Magazines for Mystery Fans! | promo (ad from the publisher) | 1 | pencils: Carmine Infantino, Ruben Moreira; inks: Sy Barry, Ruben Moreira | Phantom Stranger |