This book invites the reader to understand our Universe, not just marvel at it. From the clock-like motions of the planets to the catastrophic collapse of a star into a black hole, gravity controls the Universe. Gravity is central to modern physics, helping to answer the deepest questions about the nature of time, the origin of the Universe and the unification of the forces of nature. Linking key experiments and observations through careful physical reasoning, the author builds the reader's insight step-by-step from simple but profound facts about gravity on Earth to the frontiers of research. Topics covered include the nature of stars and galaxies, the mysteries of dark matter and dark energy, black holes, gravitational waves, inflation and the Big Bang. Suitable for general readers and for undergraduate courses, the treatment uses only high-school level mathematics, supplemented by optional computer programs, to explain the laws of physics governing gravity.

Second edition of a widely-used textbook providing the first step into general relativity for undergraduate students with minimal mathematical background.

While focusing on his core mission to preach the gospel worldwide, T.D. Jakes has seen many good people not spend enough quality time with family, friends, and God. They have gotten so swept up in the daily grind that they have failed to live the rich life that God desires for each of His people. In his new book, Jakes provides readers with strategies that will help them rejuvenate their life and turn their "busyness" into a "business." All readers-not just entrepreneurs-will benefit from Jakes' insightful advice so that they can use the days God has blessed them with wisely and finish each day strong!

A ball drops to the ground. Leaves fall from a tree. Gravity is at work all around you. But what exactly is gravity? And how does it affect different objects? Read this book to find out! Learn all about matter, energy, and forces in the Exploring Physical Science series—part of the Lightning Bolt BooksTM collection. With high-energy designs, exciting photos, and fun text, Lightning Bolt BooksTM bring nonfiction topics to life!

Nature Spirituality from the Ground Up invites you to go beyond simply exploring the symbols of nature and encourages you to bury your hands in the earth and work with the real thing. This is a book on green spirituality that makes a difference, empowering you to connect with totems as a part of your spiritual life. Uniquely approaching totems as beings we can give to, rather than take from, Lupa shows how orienting yourself this way deepens your spiritual connection to the earth and helps you rejoin the community of nature. And while most books on totems focus on animals, Nature Spirituality from the Ground Up helps you work with interconnected ecosystems of totems: plants, fungi, minerals, waterways, landforms, and more.

An award-winning science writer traces our millennia-long effort to understand the phenomenon of gravity--the greatest mystery in physics, and a force that has shaped our universe and our minds in ways we have never fully understood until now.