Presents a collection of essays that examines the characteristics and life cycles of stars, and analyzes how stars are formed, what goes on during the life of a star, and what happens when stars die.
Radiating fire and ice, comets as a phenomenon seem part science, part myth. Two thousand years ago when a comet shot across the night sky, it convinced the Romans that Julius Caesar was a god. In 1066, Halley’s Comet was interpreted as a foreshadowing of the death of Harold the Second in the Battle of Hastings. Even today the arrival of a comet often feels auspicious, confirming our hopes, fears, and sense of wonder in the universe. In Comets, P. Andrew Karam takes the reader on a far-ranging exploration of these most beautiful and dramatic objects in the skies, revealing how comets and humanity have been interwoven throughout history. He delves into the science of comets and how it has changed over time; the way comets have been depicted in art, religion, literature, and popular culture; and how comets have appeared in the heavens through the centuries. Comprehensive in scope and beautifully illustrated throughout, the book will appeal not only to the budding astronomer, but to anyone with an appreciation for these compelling and remarkable celestial bodies.
In this book, readers will learn about the incredible transformation caterpillars make into some of the most beautiful flying insects on the planet. Vibrant, full-color photos and carefully leveled text will engage readers as they learn more about every stage of the butterflys life cycle.
This stunning illustrated children's book takes an innovative look at the circle of life, including animals, dinosaurs, stars, volcanoes, and even YOU. Everything has a beginning and an end, but what happens in between? Follow the migration of zebra across the vast plains, meet penguins guarding their eggs on the ice, and watch butterflies emerge from their cocoons. Shoot back in time 4.5 billion years to see how planet Earth was formed and then leap into the future to see what happens when stars die. Discover a new life cycle every time you turn the page. You'll take a closer look at the life cycles of environments, too. Discover how a river forms and changes over time. Find out how a tree grows and all of the other life cycles it supports within it. See the amazing sculptures the ocean waves carve out of cliffs. Dive beneath the surface to see how coral reefs form, and what causes them to die. Follow the life cycles of weather--from the water cycle to ice ages, to give you a better grasp of the climate situation we find ourselves in now. From the single-celled amoeba to how the Earth formed, the life cycles in this ebook have been carefully chosen to give you an amazing overview of the universe, and how everything is intricately linked. Filled with facts to amaze your friends, stunning photography, and beautifully detailed illustrations by Sam Falconer, Life Cycles gets to grips with the essence of life itself.
This book addresses how best to make build vs. buy decisions, and what effect such decisions have on the software development life cycle (SDLC). Offering an integrated approach that includes important management and decision practices, the text explains how to create successful solutions that fit user and customer needs, by mixing different SDLC methodologies. Features: provides concrete examples and effective case studies; focuses on the skills and insights that distinguish successful software implementations; covers management issues as well as technical considerations, including how to deal with political and cultural realities in organizations; identifies many new alternatives for how to manage and model a system using sophisticated analysis tools and advanced management practices; emphasizes how and when professionals can best apply these tools and practices, and what benefits can be derived from their application; discusses searching for vendor solutions, and vendor contract considerations.