Space travelers discover the utility of hands and what's inside them: bones, muscles, and nerves. The Australian creative team who introduced readers to microbes in Do Not Lick This Book (2017) returns with a similarly metafictive introduction to our structural insides. Zooming through space to a friend's birthday party, Quog and Oort accidentally crash their ship on Earth. Breaking the fourth wall, the narrator asks readers to help these aliens by turning the page to open their space ship. Quog, a green blob, is impressed by this demonstration of the utility of hands and immediately grows some but finds she also needs bones, muscles, and nerves. Readers are given plenty of opportunities to interact with the story: putting their hands on the pages so that Oort, a pink, three-eyed gas cloud, can see inside; lifting the book; and even turning a page with their eyes closed. There's a departing high-five after the ETs successfully fix their vessel, then a grand, wordless spread shows what hands and arms are really good for: hugs. A final tongue-in-cheek spread offers instructions for growing your own extra hands. The uncluttered, flat design of the playful illustrations has the air of animation and nicely contrasts with three-dimensional views of bones, muscles and ligaments, and nerves set on a surprisingly pink background. (This book was reviewed digitally with 10-by-16-inch double-page spreads viewed at 87.5% of actual size.) A clever presentation of some basic anatomy by a duo with talented hands indeed. (Informational picture book. 4-8) Copyright (c) Kirkus Reviews, used with permission.