Our universe

The Earth introduces readers to key moments in the planet's life, from its formation over four billion years ago to the present, including the Earth's position in the solar system, its layers, and when plants and animals began to inhabit the planet.

"A light-hearted nonfiction picture book about the formation and history of the moon and its history in relation to earth--told from the perspective of the moon itself!"--

"Learn all about planet Earth in the third book in this nonfiction Level 1 Ready-to-Read series about the universe that's perfect for kids who love science and space!"--

Meet Mars! The red planet. Planet Marvelous. Favorite sibling of Earth (or so he claims). Sometimes they're close (just 34.5 million miles apart). Sometimes they need space (250 million miles apart)! Earth and Mars have a lot in common--clouds, mountains, polar icecaps. And while Earth has Earthlings, Mars makes a persuasive case for why people should make the journey to spend time with him. His day is 7 minutes longer! He is home to the largest volcano...