| Imprint | Kingfisher |
| Publisher | Houghton Mifflin Company |
| Copyright Holder | Kingfisher Publications Plc |
| Series Editor | Jackie Gaff |
| Series Designer | David West Children's Books |
| Consultant | David Hughes |
| Art Director/Editor | Christina Fraser |
| Cover Artist | Chris Forsey, Tony Kenyon |
| Illustrator | Chris Forsey, Tony Kenyon, Sebastian Quigley, Ian Thompson, Ross Watton, Ruby Green |
| Series | I Wonder Why |
| About/Subject | Outer Space |
| Format | Paperback |
| Language | English |
| Location | Boston |
| Copyright | 1993 |
| First Published In Hardcover | 1993 |
| First Published In Paperback | 1997 |
| This Edition Published | 2003 |
| Pages / Font | 32 pages |
| ISBN 10 | 0-753-45614-1 |
| ISBN 13 | 978-0-7534-5614-9 |
| Barcode | 9 780753 456149 |
| Printer's Key | 10 9 8 |
| Price | $6.95 |
| EAN 5 | 90000 |
| Notes | 1st American edition.
Printed in Taiwan. |
