"While children race to bed each night on Earth in familiar ways, aliens have their own rituals for falling asleep. In Outer Space Bedtime Race, readers are introduced to concepts about the solar system through a rhyming portrayal of bedtime across the galaxy. The text is a healthy mix of information and downright silliness: “The Mercury kids land rocket ships, then hurry to their nightly dips. They glide along on rocky paths to steamy crater bubble baths.” The trip through outer space is fancifully depicted by Won with stellar graphic art. The illustrations capture details of each planet including rings, moons, and even volcanoes. VERDICT Paired with the factoid sheet at the end of the book, this funny bedtime story will be a great companion to nonfiction books about outer space."
–Megan Egbert, School Library Journal