Twinkle twinkle little star, I know exactly what you are

Gr 1-3-A scientifically accurate rewrite of the classic lullaby. Rather than stick with the continual wondering present in the original version, Kregenow, a professor of astronomy and astrophysics, has crafted a text that fits the familiar melody and states known facts, such as a description of a star as an "opaque ball of hot dense gas, million times our planet's mass." Additional verses explain constellations (as "a cosmic Rorschach's Test"), twinkling (atmospheric turbulence), and other concepts, like types of stars and star systems. About a quarter of the book, the last 10 pages, expands on each of the four-line stanzas, explaining the concepts in greater detail in the same order as it is presented in the text. Also on those pages are the interstellar photographs from which Saldaña's richly textured mixed media illustrations drew their inspiration. VERDICT Recommended as a fun tool to ignite children's curiosity in astronomy.-Kacy Helwick, New Orleans Public Library © Copyright 2018. Library Journals LLC, a wholly owned subsidiary of Media Source, Inc. No redistribution permitted.

From an astrophysicist, the straight dope on stars and starry phenomena.Kregenow responds to the popular nursery rhyme in the same metrical vein but with analytical precision: "Opaque ball of hot dense gas, / million times our planet's mass, / looking small because you're far, / I know exactly what you are." Further verses clear the air about constellations ("at best / just a cosmic Rorschach test"), why stars twinkle, why they shine in different colors, how they can turn into neutron stars or black holes, and so on. Notes at the end, with small photos, offer further detail on these and other cosmic concepts. Saldaa sandwiches painted images of stars and star fields, planets, and dust clouds between views of two dark-haired beige-skinned children peering through a bedroom telescope at the night sky and using a printed guidebook to identify what they're seeing, then falling asleep beneath a spray of stars projected by a night light. The technical vocabulary as well as the narrative's coldly rational tone and blanket claims of certainty lay a heavy load on the original versebut in the end the references to pulsars and supernovas, to billions of years and miles, and the uniqueness (so far) of our planet as a home for life amid the Milky Way's "Quarter trillion stars" are less apt to quash the wondering than crank it up.Nourishing fare for young stargazers who really, truly do "wonder what you are." (Informational picture book. 6-9) Copyright Kirkus Reviews, used with permission.