I guess that NONE of the National Geographic Kids Readers seem to include bibliographies, citations and suggestions for further reading, and while this massively bothers me in and of itself, with Elizabeth Carney's Planets, the shortcomings of not featuring such supplemental information and research possibilities really have hit home for me so to speak. For while Planets does indeed present an organised and decently informational introduction to the solar system, to our sun and the planets, due to the fact that this book is obviously geared to and has been conceptualised for recently independent child readers, it is thus by nature and plain necessity rather simplistic and sparse in detail and description (definitely understandable, albeit I do rather fault the author for not mentioning that Pluto used to be considered one of the planets and that its status of now being considered a dwarf planet is a relatively recent phenomenon). And yes indeed (and in my humble opinion) because the factual information on the Sun, on Mercury, Venus, the Earth, Mars etc. is so lacking in detail (by the necessity of author Elizabeth Carney wanting to and also needing to keep her textual content, her printed words easily accessible to and for recently independent readers), supplemental, more detailed information that is not part of the text proper (including bibliographical information, including suggestions for further study and research) should really be a given, should be an absolutely required, necessary addition (as there will likely be both children and parents who might well desire more content, who might want more details, more information and the lack of websites, of possible books where this might be found, where this might be looked up in Planets, this really does sadly limit its potential teaching and learning value, especially with regard to easy and quick supplemental study and research).
Two and a half stars for Planets (and while I have indeed found Planets a generally readable, and above all a well organised introduction to the solar system, to the planets for young readers, the combination of a lack of any and all bibliographical lists, the complete absence of suggestions for further study and knowledge expansion alongside of those silly, lame and yes indeed noticeably repetitive riddles and puns is enough for me to once again only consider a two star ranking at best, although I do in fact and actually consider Planets as an adequate enough introduction to the solar system, but with definite and personally frustrating, annoying limitations).