One held that the entire universe was contained in the Milky Way galaxy. Their champion was the strong-willed astronomer Harlow Shapley. Another camp believed that the universe was so vast that the Milky Way was just one galaxy among billions—the view that would prevail, proven by the equally headstrong Edwin Hubble.Almost forgotten is the Harvard Observatory "computer"—a human number cruncher hired to calculate the positions and luminosities of stars in astronomical photographs—who found the key to the mystery. Radcliffe-educated Henrietta Swan Leavitt, fighting ill health and progressive deafness, stumbled upon a new law that allowed astronomers to use variable stars—those whose brightness rhythmically changes—as a cosmic yardstick. Miss Leavitt's Stars is both a masterly account of how we measure the universe and the moving story of a neglected genius

    But there are things that can take over the bodies and brains of innocent creatures, turning them into senseless slaves. Meet nature's zombie makers--including a fly-enslaving fungus, a suicide worm, and a cockroach-taming wasp--and their victims.

    On July 7, 2003, a twin rover named Opportunity soared through the solar system with the same mission: to find out if Mars ever had water that could have supported life.A thrilling addition to the acclaimed Scientists in the Field series, The Mighty Mars Rovers tells the greatest space robot adventure of all time through the eyes—and heart—of Steven Squyres, professor of astronomy at Cornell University and lead scientist on the mission. This suspenseful page-turner captures the hair-raising human emotions felt during the adventures with two tough rovers.

    And listening. And staying quiet, so quiet you can hear your own heartbeat. Soon you’ll see that there are birds everywhere—up in the sky, down on the ground, sometimes even right in front of you just waiting to be discovered! Young bird lovers will adore this lushly illustrated introduction to how to spot and observe our feathered friends. It features more than fifty different species, from the giant whooping crane to the tiny ruby-throated hummingbird, and so many in between, and a detailed author’s note provides even more information about birding for curious readers. This celebration of the wondrous variety, colors, and sounds of the avian world is sure to have children grabbing their binoculars and heading outside to explore.

    With superb color sky charts, diagrams, or photographs on almost every page, and clear and engaging writing, Stars and Planets is the most user-friendly and informative guide to the night sky. The product of more than twenty years' collaboration between one of the world's leading astronomy writers and the world's foremost celestial mapmaker, the new Stars and Planets features a slightly larger (but still compact) size, a more spacious and attractive design, and much new material, including more information on galaxies and star types. Simply put, Stars and Planets is indispensable. Don't leave home--at night--without it. Detailed charts covering all 88 constellations in the Northern and Southern hemispheres Data and notes on all bright stars and other objects of interest Detailed Moon maps and descriptions of the main lunar features Tips on choosing and using binoculars and telescopes, to suit any budget The only guide to provide annual planetary data as a downloadable Web resource

    And then one night she saw something unusual: a comet no one had ever seen before! Miss Mitchell’s extraordinary discovery made her famous the world over and paved the way for her to become America’s first professional female astronomer. Gorgeously illustrated by Diana Sudyka, this moving picture book about a girl from humble beginnings who became a star in the field of astronomy is sure to inspire budding scientists everywhere.

    In this amazingly comprehensible history of the universe, Simon Singh decodes the mystery behind the Big Bang theory, lading us through the development of one of the most extraordinary, important, and awe-inspiring theories in science.

    Those that have liquid water. And maybe even life.She wonders how we might be able to take the our first ever high resolution picture of an exoplanet using the microchips found in mobile phones. And she meets world-leading astrophysicists to ask if within our lifetimes humans might step foot on an earth-like planet.An ITN production for Audible Originals.

    Using the insights of great mathematicians and endlessly observing the sky, he succeeded in confirming two things that altered human life forever: that there are more galaxies than our own, and that the universe is always expanding. Hubble’s message to us is to find peace in the vastness of the mystery surrounding us, and to be curious. “We do now know why we are born into the world,” he said, “but we can try to find out what sort of world it is.”

    Having just completed his masterpiece, The General Theory of Relativity—which provided a brand-new theory of gravity and promised a new perspective on the cosmos as a whole—he set out at once to share his excitement with as wide a public as possible in this popular and accessible book.Here published for the first time as a Penguin Classic, this edition of Relativity features a new introduction by bestselling science author Nigel Calder.

    Over the canyon, the sun scalds the air, baking desert mud to stone. But under the shade of the cliffs hides another world, where bighorn sheep bound from rock to rock on the hillside, roadrunners make their nests in sturdy cacti, and banded geckos tuck themselves into the shelter of the sand. Discover the wonders concealed in the curves of the canyon, the magic of a desert wildflower bloom, and all the unexpected creatures that bring the desert to life.DISCOVER AMAZING ANIMALS: Kids are endlessly curious about the natural world and the wildly varied animals living in it—and the desert is FULL of amazing and surprising animals!CAPTIVATING NONFICTION: Like its predecessors, this latest offering in the Over and Under picture book series illuminates the magic of the natural world and its amazing inhabitants by telling the story of one family's hike through a real-world desert ecosystem in lyrical prose and color-drenched illustrations. Even the most reluctant readers will be drawn into a fact-filled story this compelling!GREAT FOR TEACHING: The Next Generation Science Standards (NGSS) emphasize learning about animal habitats/biomes in K–2 curriculums, while later grades address topics like food chains, conservation, and endangered species. With a depth of research and an engaging, highly visual narrative, this book is an excellent resource for librarians and primary school educators.ENCOURAGES ENVIRONMENTAL AWARENESS: Concern for and preservation of the wilderness is an increasingly talked-about topic. This book provides a great, upbeat jumping-off point for discussions of the importance and wonder of our world's natural habitats and ecosystems.

    As an adult, she dives even deeper. Whether she's designing submersibles, swimming with the whales, or taking deep-water walks, Sylvia Earle has dedicated her life to learning more about what she calls "the blue heart of the planet." With stunningly detailed pictures of the wonders of the sea, Life in the Ocean tells the story of Sylvia's growing passion and how her ocean exploration and advocacy have made her known around the world. This picture book biography also includes an informative author's note that will motivate young environmentalists.Life in the Ocean is one of The Washington Post's Best Kids Books of 2012

    It covers such topics as the hair on the fly's body (requires a lot of shaving), its ability to walk on the ceiling (it's pretty cool, but it's hard to play soccer up there), and its really disgusting food tastes (garbage juice soup followed by dirty diaper with rotten tomato sauce, for example). Although silly and off-the-wall, The Fly contains real information that will tie in with curriculum.

    In the 14 billion years since, scientists have pointed their telescopes upward, peering outward in space and backward in time, developing and refining theories to explain the weird and wonderful phenomena they observed.Through these observations, we now understand concepts like the size of the universe (still expanding), the distance to the next-nearest star from earth (Alpha Centauri, 26 trillion miles) and what drives the formation of elements (nuclear fusion), planets and galaxies (gravity), and black holes (gravitational collapse). But are these cosmological questions definitively answered or is there more to discover?Oxford University astrophysicist and popular YouTube personality Dr. Becky Smethurst presents everything you need to know about the universe in 10 accessible and engaging lessons.In Space at the Speed of Light: The History of 14 Billion Years for People Short on Time, she guides you through fundamental questions, both answered and unanswered, posed by space scientists. Why does gravity matter? How do we know the big bang happened? What is dark matter? Do aliens exist? Why is the sky dark at night? If you have ever looked up at night and wondered how it all works, you will find answers - and many more questions - in this pocket-sized tour of the universe!

    . . a baby is here.A soon-to-be big sister and her parents prepare for the arrival of a new baby in the family. Alternating panels depict what the family is experiencing in tandem with how the baby is growing, spanning everything from receiving the news about the new baby to the excitement of its arrival. In this pregnancy book unlike any other one out there, watch what's actually happening through meticulously detailed, actual size illustrations, perfectly paired with a lyrical yet informative text, and culminating in a warm, joyful birth scene. Complete with backmatter that includes an elaboration on pregnancy, a list of amazing things babies can do before they're born, and more, Miranda Paul and Caldecott Honor Artist Jason Chin deliver another spectacular nonfiction picture book.