This is a great start for a girl and Science Fiction - HOWEVER - there are two endings. Heinlein originally wrote one ending that the editor did not like in a juvenile book. Some editions more recently published include both endings. For early readers, stick to the older version without the original alternate ending.
We’re hiding the errata, movie connections, books that influenced this book, books influenced by this book, books that cite this book and books cited by this book sections. If you would like to add content to them, you must first make them visible.