Presents an introduction to what we know about the universe in which we live and describes how we have gathered this information.

"In The Secret Explorers and the Comet Collision, space expert Roshni leads a mission that's out of this world - literally! With rainforest expert Ollie, she is set the task of fixing the space probe orbiting Jupiter before a comet hits the planet. With the clock ticking, it's a race against time for the Secret Explorers as they dodge asteroids, complete daring spacewalks, and use all their skills to complete their mission."--Amazon.com.

"An introduction to human space exploration for primary and intermediate grade students, with information about the early history of space travel and current space exploration. Includes a list of highlights for each chapter, fun facts, glossary, resource list, and index"--Provided by publisher.

"During a visit to a space museum, Fly Guy and Buzz learn all about planets, space crafts, space suits, and even dirty snowballs (i.e. comets!)! With straightforward fun facts, humorous illustrations of Fly Guy and Buzz, and vivid photographs throughout, this book is sure to be a hit with budding astronauts everywhere!"--Amazon.com.

Unmanned spacecraft have collected much valuable information about the planets in our solar system. It seems almost miraculous that something man-made could travel thousands of miles per hour to places millions of miles away. But it's not a miracle-it's science! This wide-ranging book reveals the extraordinary careers of aerospace engineers and space scientists and the extraordinary technology they collaborate on. Readers will gather numerous tips...

"Winner of the 2013 Eugene E. Emme Award for Astronautical Literature, American Astronautical Society" Chris Impey is University Distinguished Professor in the Department of Astronomy at the University of Arizona. His books include The Living Cosmos, How It Ends, and How It Began. Holly Henry is professor of English at California State University, San Bernardino. She is the author of Virginia Woolf and the Discourse of Science: The Aesthetics of Astronomy....

"Rosetta isn't the first probe that's been sent to study comets, but it's the most successful as the first spacecraft to closely observe a comet as it approaches the sun. For 10 years, Rosetta moved around the solar system, just so it could finally meet up with the right comet and release a lander to further study it. Readers learn about Rosetta's incredible journey from just an idea to a fascinating robot with solar-charging batteries and other special...

"Engaging images accompany information about robonauts. The combination of high-interest subject matter and light text is intended for students in grades 2 through 7"--

Young explorers are treated to cool photographs and illustrations of space probes and outer space. Photographs also show images taken directly from various space probes. The narrative shares a lot of detail in an engaging way. A timeline is included.

Text and photos present the information collected by spacecraft with no people on them, known as space probes, which have penetrated the areas around planets as far away as Neptune.