Discover how planes get--and stay--airborneNow you can truly master an understanding of the phenomenon of flight. This practical guide is the most intuitive introduction to basic flight mechanics available. Understanding Flight, Second Edition, explains the principles of aeronautics in terms, descriptions, and illustrations that make sense--without complicated mathematics. Updated to include helicopter flight fundamentals and aircraft structures, this avia...

This book is a compendium of key scientific questions, challenges, and opportunities across different areas of exoplanetary science. The field is currently experiencing rapid growth, and the book provides a front-row view of the advancements at the cutting-edge of the field. Each chapter contains a short exposition on the most important open questions, challenges, and opportunities in a specific area from the perspective of one or more top experts in the area. It provides a starting point ...

This story tells the tale of two happy, excited children and their preparation for Christmas. They go through all the necessary steps of finding the perfect tree, cutting it down, and putting it on their back deck. Of course, they decorate it but then something unusual happens to the tree. Read all about it to solve this mystery.