Comets, , North Star Editions, Joanne Mattern,Technology/Aeronautics, Astronautics & Space Science,JUVENILE NONFICTION, space books for kids; introduction to space; juvenile nonfiction; grades 2 and 3; space exploration; outer space; Kuiper Belt; Oort Cloud; Tycho Brahe; Isaac Newton; Halley’s Comet; Hale-Bopp; Shoemaker-Levi,, Space, United States, en-UShttps://northstareditions.comspace books for kids; introduction to space; juvenile nonfiction; grades 2 and 3; space exploration; outer space; Kuiper Belt; Oort Cloud; Tycho Brahe; Isaac Newton; Halley’s Comet; Hale-Bopp; Shoemaker-Levi, [BLURB],[CITY],,books, ebooks, biblet, Book2look