Offers readers a captivating look into UFOs and questions whether aliens exist, complete with vivid photographs and exciting diagrams. Back matter includes an in-depth 'Out of This World' feature that highlights a related topic, a phonetic glossary, resources for further study, and an index. Outer space is full of wonder and mystery. Is there life beyond Earth? What is a comet made of? Young readers will enjoy blasting into space with this exciting,...

Looks at the history of astronomy, identifies important astronomers, and summarizes what is known about the Sun, Moon, planets, and stars.

During the 1960s and early 1970s, northern Arizona played a critical role in fulfilling President Kennedy?s bold challenge of sending humans to the moon. From the rocky depths of the Grand Canyon to lofty cosmic views from Flagstaff?s dark skies, northern Arizona was ideal for activities ranging from moon buggy testing and geology training to lunar mapping and mission simulation. Every astronaut who walked on the moon, from Neil Armstrong to Gene...

Die-cut pages show the phases of the moon as it shines on animals all over the world, from sea turtles laying eggs on the beach to frogs in the jungle and mice in the fields.

America's most celebrated astrophysicist invites young readers to explore the mysteries of the universe.

Simple text and "out-of-this-world" photography introduce readers to NASA's Cassini-Huygens space probe, and its mission to explore the gas giant Saturn. Important details include the probe's construction, its launch, the landing of the Huygens probe on Saturn's moon Titan, and Cassini's continuing mission to unlock the secrets of Saturn's rings and other unique features. Aligned to Common Core Standards and correlated to state standards. A&D Xtreme...