I wrote this book because I wanted to learn more about interstel lar flight. Not the Star Trek notion of tearing around the Galaxy in a huge spaceship-that was obviously beyond existing tech nology-but a more realistic mission. In 1989 I had videotaped Voyager 2's encounter with Neptune and watched the drama of robotic exploration over and over again. I started to wonder whether we could do something similar with Alpha Centauri, the nearest star to the Sun. Everyone seemed to agree that manned flight to the stars was out of the question, if not permanently then for the indefinitely foreseeable future. But surely we could do something with robotics. And if we could figure out a theoretical way to do it, how far were we from the actual technology that would make it happen? In other words, what was the state of our interstellar technology today, those concepts and systems that might translate into a Voyager to the stars? Finding answers meant talking to people inside and outside of NASA. I was surprised to learn that there is a large literature of interstellar flight. Nobody knows for sure how to propel a space craft fast enough to make the interstellar crossing within a time scale that would fit the conventional idea of a mission, but there are candidate systems that are under active investigation. Some of this effort begins with small systems that we'll use near the Earth and later hope to extend to deep space missions.

This book includes numerous calculations for the many specific examples included within. I have included the many calculated examples to provide the reader with immediate justifications for the numerous concepts described. This was not done to belittle or talk down to the reader but rather to give the reader a clear sense of the plausibility for the propulsion methods and performance capabilities thereof. Interstellar travel at the many specific highly relativistic velocities contemplated in this bookand, in some cases, extreme vehicle massesis still a very controversial subject but nonetheless a highly mathematicalized and intelligible subject. My hope and intention is to thus clearly inspire and show the reader the plausibility of the concepts by providing the reader with proper evidence through his or her simple inspection of the formulas and values included in the computations. Some speculative physics is included, which is based on commonly presented theoretical constructs.

Encompassing astronomy, mythology, psychology, and astrology, Pluto offers a wealth of knowledge about our most famous dwarf planet. First observed in 1930 and once defined as the ninth and final planet in our solar system, Pluto and its discovery and reclassification throw a unique light on how we generate meaning in science and culture. This anthology, timed to appear in concordance with NASA’s New Horizons's approach to Pluto in July 2015, shows that while the astronomical Pluto may be little more than an ordinary escaped moon or tiny Kuiper Belt object, it is a powerful hyperobject, for its mythological and cultural effigies on Earth incubate deep unconscious seeds of the human psyche. Certain astronomical features pertain to Pluto in terms of its distance from the Sun, coldness, and barrenness. These also inform its mythology and astrology as befitting a planet named after the God of the Underworld. Among the issues central to this collection are the meanings of darkness, loss, grief, inner transformation, rebirth, reincarnation, and karmic revelation, all of which are associated with the astrology of Pluto. Pluto also embodies the meaning of true wealth as being nonmaterial essence instead of property, conventional accolades, ego identity, achievement. It is the marker of negative capability. Table of Contents Dana Wilde: Pluto on the Borderlands Richard Grossinger: Pluto and The Kuiper Belt Richard C. Hoagland: New Horizon … for a Lost Horizon J. F. Martel: Pluto and the Death of God James Hillman: Hades Fritz Bruhubner: The Mythology and Astrology of Pluto Thomas Frick: Old Horizons John D. Shershin: The Inquisition of Pluto Stephan David Hewitt: Pluto and the Restoration of Soul Jim Tibbetts: Our Lady of Pluto, the Planet of Purification Shelli Jankowski-Smith: Love Song for Pluto Robert Kelly: Pluto Dinesh Raghavendra: Falling in Love with a Plutonian Steve Luttrell: Dostoevsky's Pluto Philip Wohlstetter: Ten Things I'd Like to Find on Pluto Jonathan Lethem: Ten Things I'd Like to Find on Pluto Robert Sardello: Ten Things I'd Like to Find on Pluto Ross Hamilton: Ten Things I'd Like to Find on Pluto College of the Atlantic Students: Ten Things I’d Like to Find on Pluto Jeffrey A. Hoffman: What the Probe Will Find, What I’d Like It to Find Nathan Schwartz-Salant: Ten Things I’d Like to Find on Pluto Charley B. Murphy: The Ten Worlds of Pluto Timothy Morton: Ten Things I’d Like to Find on Pluto & The End of the World Robert Phoenix: My Father Pluto Ellias Lonsdale: Pluto is the Reason We Have a Chance Rob Brezsny: Pluto: Planet of Wealth

Weblogs are about reading and writing. Literacy is about reading and writing. Blogging equals literacy. How rarely does an aspect of how we live and work plug so perfectly into how we teach and learn? Reading this book will give teachers important clues not only in how to become a blogger and to make their students bloggers, but also how this new avenue of expression is revolutionizing the information environment that we live in.

Science and science fiction have become inseparable--with common stories, interconnected thought experiments, and shared language. This reference book lays out that relationship and its all-but-magical terms and ideas. Those who think seriously about the future are changing the world, reshaping how we speak and how we think. This book fully covers the terms that collected, clarified and crystallized the futurists' ideas, sometimes showing them off, sometimes slowing them down, and sometimes propelling them to fame and making them the common currency of our culture. The many entries in this encyclopedic work offer a guided tour of the vast territories occupied by science fiction and futurism. In his Foreword, David Brin says, "Provocative and enticing? Filled with 'huh!' moments and leads to great stories? That describes this volume."

The story of unmanned space exploration, from Viking to today Dreams of Other Worlds describes the unmanned space missions that have opened new windows on distant worlds. Spanning four decades of dramatic advances in astronomy and planetary science, this book tells the story of eleven iconic exploratory missions and how they have fundamentally transformed our scientific and cultural perspectives on the universe and our place in it. The journey begins with the Viking and Mars Exploration Rover missions to Mars, which paint a startling picture of a planet at the cusp of habitability. It then moves into the realm of the gas giants with the Voyager probes and Cassini's ongoing exploration of the moons of Saturn. The Stardust probe's dramatic round-trip encounter with a comet is brought vividly to life, as are the SOHO and Hipparcos missions to study the Sun and Milky Way. This stunningly illustrated book also explores how our view of the universe has been brought into sharp focus by NASA's great observatories—Spitzer, Chandra, and Hubble—and how the WMAP mission has provided rare glimpses of the dawn of creation. Dreams of Other Worlds reveals how these unmanned exploratory missions have redefined what it means to be the temporary tenants of a small planet in a vast cosmos.

The authors have put forth great efforts in gathering present day knowledge about different objects within our solar system and universe. This book features the most current information on the subject with information acquired from noted scientists in this area. The main objective is to convey the importance of the subject and provide detailed information on the physical makeup of our planetary system and technologies used for research. Information on educational projects has also been included in the Radio Astronomy chapters.This information is a real plus for students and educators considering a career in Planetary Science or for increasing their knowledge about our planetary system.