Hello, World! Solar System

Every young child loves to look up at the moon in the night sky. Now here’s a board book that can teach toddlers all about the sun, moon, stars, and planets—with colors, shapes, sizes, and super-simple facts. 

Hello, World! is a series designed to introduce first nonfiction concepts to babies and toddlers. Told in clear and easy terms and featuring bright, cheerful illustrations, Hello, World! makes learning fun for young children. And each page offers helpful prompts for engaging with your child. (“Can you point to the red planet? That’s Mars!”) It’s a perfect way to bring science and nature into the busy world of a toddler, where learning never stops. 

Look for all the books in the Hello, World! series: Weather, Backyard Bugs, and Birds.

“A cheerful introduction to outer space.”—Booklist

“Supplemental tidbits (“Ouch! Asteroids and comets often hit this planet,” [McDonald] writes about Mercury) offer additional details to pique the interest of children just hearing about Earth’s cosmic neighbors for the first time.”—Publishers Weekly