Suborbital flight activities, including the use of sounding rockets, aircraft, high-altitude balloons, and suborbital reusable launch vehicles, offer valuable opportunities to advance science, train the next generation of scientists and engineers, and provide opportunities for participants in the programs to acquire skills in systems engineering and systems integration that are critical to maintaining the nation's leadership in space programs. Furthermore, the NASA Authorization Act of 2008 finds it in the national interest to expand the size of NASA's suborbital research program and to consider increased funding. Revitalizing NASA's Suborbital Program is an assessment of the current state and potential of NASA's suborbital research programs and a review of NASA's capabilities in this area. The scope of this review includes: existing programs that make use of suborbital flights; the status, capability, and availability of suborbital platforms; the existing or planned launch facilities for suborbital missions (including the Stratospheric Observatory for Infrared Astronomy); and opportunities for scientific research, training, and educational collaboration in the conduct of suborbital missions by NASA. The findings illustrate that suborbital program elements-airborne, balloon, and sounding rockets-play vital and necessary strategic roles in NASA's research, innovation, education, employee development, and spaceflight mission success, thus providing the foundation for achievement of agency goals. Table of Contents Front Matter Executive Summary 1 Introduction 2 NASA's Airborne Research Capabilities 3 NASA's Balloon Research Capabilities 4 NASA's Sounding Rocket Capabilities 5 The Stratospheric Observatory for Infrared Astronomy 6 Progressing from Education to Training to Workforce Development 7 Potential Opportunities for Commercial Suborbital Capabilities 8 An Overview of NASA's Suborbital Research Capabilities: Assessment, Findings, and Recommendations Bibliography Appendixes Appendix A: NASA Request and NASA Authorization Act of 2008 Section 505 Appendix B: Statement of Task Appendix C: Public Agendas for Meetings Appendix D: Biographies of Committee Members and Staff Appendix E: Acronyms and Abbreviations Appendix F: NASA Sounding Rocket Budget History

We know that the Big Bang of 13 billion years ago saw the birth of the sun and many other planets. It just took an instant for the birth of the universe and the universe has been growing or expanding at the speed of light ever since. There are 100 billion galaxies within the universe and our galaxy is just one of them with over 100 billion stars. The sun which is 90 million miles away from the earth is our own star. The activity on the sun, with its almost constant eruptions of super heated plasma and vast waves of radiation can at times be directed towards the earth. On 15th February 2013, people on their way to work in Chelyabinsk, Russia were to witness an event that happens every fifty to one hundred years. A meteorite, which looked like a fireball, brighter than any of the planets and brighter than the sun, was recorded on the cameras many have in their cars.

Aimed at engineering students and professionals working in the field of mechanics of space flight, this book examines space tether systems - one of the most forward-thinking directions of modern astronautics. The main advantage of this technology is the simplicity, profitability and ecological compatibility: space tethers allow the execution of various manoeuvers in orbit without costs of jet fuel due to the use of gravitational and electromagnetic fields of the Earth. This book will acquaint the reader with the modern state of the space tether's dynamics, with specific attention on the research projects of the nearest decades. This book presents the most effective mathematical models and the methods used for the analysis and prediction of space tether systems' motion; attention is also given to the influence of the tether on spacecraft's motion, to emergencies and chaotic modes.

The chemical elements are all around us, and are part of us. The composition of the Earth, and the chemistry that governs the Earth and its biology are rooted in these elements.

As we enter a new millennium, people the world over are reflecting on the accomplishments of the past and speculating about opportunities of the future. This document discusses human exploration and development of space.

This book is a new look at one of the hottest topics in contemporary science, Dark Matter. It is the pioneering text dedicated to sterile neutrinos as candidate particles for Dark Matter, challenging some of the standard assumptions which may be true for some Dark Matter candidates but not for all. So, this can be seen either as an introduction to a specialized topic or an out-of-the-box introduction to the field of Dark Matter in general. No matter if you are a theoretical particle physicist, an observational astronomer, or a ground based experimentalist, no matter if you are a grad student or an active researcher, you can benefit from this text, for a simple reason: a non-standard candidate for Dark Matter can teach you a lot about what we truly know about our standard picture of how the Universe works.