You can only see the planet Mercury during the twilight hours unless, of course, you are looking at this wonderful book by Seymour Simon. Expect the usual fascinating and beautiful photographs. This time the photos were taken by Mariner as it sped through space, and they reveal the craters and the rocky surface of the planet. Is there air in Mercury's atmosphere? How long are the day and the night on Mercury? Great information for those hungry young readers who like to be in the know.



Non-fiction space planets middle readers reluctant readers boys