From the months each of us spent suspended in the womb anticipating birth to the moments when we wait for sleep to transport us to other realities, we are always aware of gravity. In On Gravity, physicist A. Zee combines profound depth with incisive accessibility to take us on an original and compelling tour of Einstein's general theory of relativity.Inspired by Einstein's audacious suggestion that spacetime could ripple, Zee begins with the stunning discovery of gravity waves. He goes on to explain how gravity can be understood in comparison to other classical field theories, presents the idea of curved spacetime and the action principle, and explores cutting-edge topics, including black holes and Hawking radiation. Zee travels as far as the theory reaches, leaving us with tantalizing hints of the utterly unknown, from the intransigence of quantum gravity to the mysteries of dark matter and energy.Concise and precise, and infused with Zee's signature warmth and freshness of style, On Gravity opens a unique pathway to comprehending relativity and gaining deep insight into gravity, spacetime, and the workings of the universe.

    Back in a time when there were still students of the stars, there were two friends, Acamar and Eridani. Eridani was a star pupil studying the night skies, and Acamar . . . well, he was made of the stuff she studied. In a star-crossed twist of fate, these long-distance friends find they’ve wished themselves into unexpected new worlds.

    Clear instructions, diagrams, and photographs show how to build projects ranging from the simple—a match-powered rocket—to the more complex—a scale-model, table-top catapult—to the offbeat—a tennis ball cannon. With a strong emphasis on safety, the book also gives tips on troubleshooting, explains the physics behind the projects, and profiles scientists and extraordinary experimenters such as Alfred Nobel, Robert Goddard, and Isaac Newton. This book will be indispensable for the legions of backyard toy-rocket launchers and fireworks fanatics who wish every day was the fourth of July.

    Landing on the Moon presented an ideal goal all on its own, but the government’s urgency in designing the Apollo program was actually brought about by the Soviet Union, which spent much of the 1950s leaving the United States in its dust (and rocket fuel). In 1957, at a time when people were concerned about communism and nuclear war, many Americans were dismayed by news that the Soviet Union was successfully launching satellites into orbit. Among those concerned was President Dwight D. Eisenhower, whose space program was clearly lagging a few years behind the Soviets’ space program. From 1959-1963, the United States worked toward putting satellites and humans into orbit via the Mercury program, but Eisenhower’s administration was already designing plans for the Apollo program by 1960, a year before the first Russian orbited the Earth and two years before John Glenn became the first American to orbit the Earth. On May 25, 1961, President John F. Kennedy addressed Congress and asked the nation to “commit itself to achieving the goal, before this decade is out, of landing a man on the Moon and returning him safely to the Earth.” Given America’s inability to even put a man in orbit yet, this seemed like an overly ambitious goal, and it isn’t even clear that Kennedy himself believed it possible; after all, he was reluctant to meet NASA Administrator James E. Webb’s initial funding requests. As Apollo 11’s name suggests, there were actually a number of Apollo missions that came before, many of which included testing the rockets and different orbital and lunar modules in orbit. In fact, it wasn’t until Apollo 8 that a manned vehicle was sent towards the Moon and back, and before that mission, the most famous Apollo mission was Apollo 1, albeit for all the wrong reasons. Over the decade, NASA would spend tens of billions on the Apollo missions, the most expensive peacetime program in American history to that point, and even though Apollo 11 was only one of almost 20 Apollo missions, it was certainly the crown jewel. only one of nearly 20 Apollo missions conducted by NASA. And to make Apollo 11 a success, it would take nearly a decade of planning by government officials, hard work by NASA scientists, intense training by the astronauts, and several missions preceding Apollo 11. It also cost over $20 billion, making the Apollo program the most expensive peacetime program in American history at the time. Apollo 12 successfully landed astronauts on the Moon just a few months after Apollo 11’s successful mission. Apollo 12 was actually more successful than Apollo 11 from the standpoint of fulfilling the mission objectives, but it was naturally overshadowed since it did not come first. Another reason Apollo 12 is mostly forgotten today can be credited to the dramatic and fateful Apollo 13 mission, which took twists and turns nobody could have predicted when it launched on April 11, 1970. Apollo 13’s mission was to land on the Moon near the Fra Mauro highlands, which were hills that had somehow formed in the middle of a huge crater tens of miles wide. The mission was supposed to test for seismic activity and take samples to analyze the crater and try to find an explanation for the formation of the hills.

    There are also ligaments and joints that hold your bones together, and cartilage in your bendable parts like your ears and your nose. Learn all about what a skeleton can do—because this isn't some make-believe Halloween skeleton, this is the real skeleton inside you.

    REX springs out, flashing a startling jawful of jagged teeth. Turn the next spread and a ravishing raptor unfurls and appears to fly off the edge of the page. Inside the amazing ENCYCLOPEDIA PREHISTORICA: DINOSAURS are "shield bearers" in full-body armor, creatures with frilly headgear, and weighty, long-necked giants. There are even amusing tidbits on the history of paleontology itself — like a pop-up version of a Victorian New Year's dinner in the belly of a dinosaur model, or a pair of scientists locked in a literal tug-of-war over bones.Full of fascinating facts and lighthearted good humor, this breathtaking book includes fascinating, up-to-the-minute information about popular dinosaurs as well as many lesser-known varieties. With each of six spreads featuring one spectacular, large pop-up as well as booklets of smaller pop-ups and text, ENCYCLOPEDIA PREHISTORICA: DINOSAURS is a magnificent display of paper engineering and creativity — an astonishing book that will be read, admired, and treasured forever.

    If you were the moon, what would you do? You'd spin like a twilight ballerina and play dodgeball with space rocks! And more.

    Includes a 45-minute interactive DVD.

    Almost five hundred years later, the revolution he set in motion is nearly complete. Just as earth is not the center of things, the life on it, it appears, is not unique to the planet. Or is it? The Life of Super-Earths is a breathtaking tour of current efforts to answer the age-old question: Are we alone in the universe? Astronomer Dimitar Sasselov, the founding director of Harvard University’s Origins of Life Initiative, takes us on a fast-paced hunt for habitable planets and alien life forms. He shows how the search for “super-Earths”—rocky planets like our own that orbit other stars—may provide the key to answering essential questions about the origins of life here and elsewhere. That is, if we don’t find the answers to those questions here first. As Sasselov and other astronomers have uncovered planets with mixes of elements different from our own, chemists have begun working out the heretofore unseen biochemistries that those planets could support. That knowledge is feeding directly into synthetic biology—the effort to build wholly novel forms of life—making it likely that we will first discover truly “alien” life forms in an earthly lab, rather than on a remote planet thousands of light years away. Sasselov tells the gripping story of a moment of unprecedented potential—a convergence of pioneering efforts in astronomy and biology to peer into the unknown. The Life of Super-Earths offers nothing short of a transformation in our understanding of life and its place in the cosmos.

    Dinosaurs roam, pyramids are built, and boats are made, but still no one comes. The Moon can't help but wonder…will friends ever come visit her? Until one day a spaceship soars from Earth...and so does her heart.Learn about the spaceflight that first landed humans on the moon through this heartwarming story about friendship! Filled with adorable illustrations and charming text, this moon book for kids is a must-have for parents and teachers alike searching for new preschool solar system books and astronaut books for toddlers.Why readers love Moon's First Friends:An educational and heartwarming story about the first moon landing told from the unique perspective of the Moon itself!Educational back matter includes out-of-this world facts about the moon, space flight, and the individuals who made the mission possibleA scannable QR code allows readers to listen to the exciting countdown to Apollo 11's liftoff

    South Asians, who are predominantly Indians and Pakistanis, make up one-third of the world's population and have the highest prevalence of heart disease and diabetes. Dr. Ronesh Sinha, an internal medicine specialist in Silicon Valley, CA, recipient of the 2013 Silicon Valley Business Journal Health Care hero award, and TEDx speaker, specializes in helping patients of South Asian heritage moderate heart disease risk factors and obesity trends with a comprehensive lifestyle modification approach that has delivered exceptional results.Dr. Sinha's The South Asian Health Solution is the first book to provide an ancestral health-based wellness plan culturally tailored for South Asians. In particular, South Asians living outside of India in countries such as the United States, England, and Canada, show an even greater disease risk due to their immersion into western dietary and lifestyle habits.The book covers some of the following topics: South Asian-specific risk factors and how to accurately interpret cholesterol and body composition readings; Key lifestyle changes for weight loss and disease prevention; Three common cultural myths that lead to unhealthy habits; How to effectively manage sleep, stress and fatigue; And specific tips for women, children, and seniors.The South Asian Health Solution explains complex medical circumstances and terminology in an easy to understand voice, allowing the reader to grasp the how's and why's of dietary and lifestyle modification to prevent disease. The book dispenses practical dietary and medical advice, based on proven techniques used in the author's South Asian consult practice and company wellness programs, that recognizes and respects unique South Asian cultural challenges and barriers that can often hinder progress. Each chapter features a detailed case study of one of Dr. Sinha's actual patients (names changed), lending authenticity and real-life application to the material covered, and ends with a checklist for patients, healthcare providers, and even companies looking to keep their South Asian employees healthy.

    Whimsical color illustrations on every page and handy definitions and sidebars help engage younger readers and develop their interest. The special star wheel helps locate stars and planets from any location at any time of year. This is the third in Black Dog & Leventhal's successful series including The Story of the Orchestra and A Child's Introduction to Poetry.

    It was a cartoon that appeared for many years in daily newspapers and was loved by millions. (And was confusing to millions more.) But one day he stopped.Gary went into hiding. He made a couple short films. He played his guitar. He threw sticks for his dogs. They threw some back.Yet Gary was restless. He couldn't sleep nights. Something haunted him. (Besides Gramps.) Something that would return him to his roots in biology, drawing and dementia--a tale called There's a Hair in My Dirt! A Worm's Story.It begins a few inches underground, when a young worm, during a typical family dinner, discovers there's a hair in his plate of dirt. He becomes rather upset, not just about his tainted meal but about his entire miserable, wormy life. This, in turn, spurs his father to tell him a story--a story to inspire the children of invertebrates everywhere.And so Father Worm describes the saga of a fair young maiden and her adventuresome stroll through her favorite forest, a perambulator's paradise. It is a journey filled with mystery and magic. Or so she thinks.Which is all we'll say for now.What exactly does the maiden encounter?Does Son Worm learn a lesson?More important, does he eat his plate of fresh dirt?Well, you'll have to read to find out, but let's just say the answers are right under your feet.Written and illustrated in a children's storybook style, There's a Hair in My Dirt! A Worm's Story is a twisted take on the difference between our idealized view of Nature and the sometimes cold, hard reality of life for the birds and the bees and the worms (not to mention our own species).Told with his trademark off-kilter humor, this first original non--Far Side book is the unique work of a comic master.Now Larson can finally sleep at night.Question is, will you?(from the back cover)

    On the 25th anniversary of its launch into low-earth orbit, TASCHEN celebrates its most breathtaking deep space images both as scientific feats and as photographic masterpieces. Ultra high-resolution and taken with almost no background light, these pictures have answered some of the most compelling questions of time and space, while also revealing new mysteries, like the strange “dark energy” that sees the universe expanding at an ever-accelerated rate. In generous square format with several foldouts, the pictures mesmerize in their iridescent colors, intricate textures, and vast, fragile forms.The collection is accompanied by an essay from photography critic Owen Edwards and an interview with Zoltan Levay, who explains how the pictures are composed. Veteran Hubble astronauts Charles F. Bolden, Jr. and John Mace Grunsfeld also offer their insights on Hubble’s legacy and future space exploration.

    Divided into 365 concise, illustrated essays, it focuses on the aesthetic as well as the scientific aspects of stargazing. It offers the most up-to-date information available, with hundreds of charts, drawings, and maps-that take you beyond the visible canopy of stars and constellations into the unseen realm of nebulae and galaxies.This simple yet substantial text is full of critical information and helpful hints on how to observe the stars; describe their position; calculate their age, brightness, and distance; and much more. Whether you observe the sky with a telescope or the naked eye, 365 Starry Nights makes the infinite intimate and brings the heavens within your grasp. Keep this invaluable, informative guide close at hand, and you'll find that the sky is the limit 365 nights a year.