In 1988 Todd discovered the secret of time travel from his step brother Jeff. Together they traveled to the Fourth Dimension where they met a species made of energy. The encounter quickly led to war as Todd assembled a team to explore and fight with him and Jeff. After a three year period the journeys into the Fourth Dimension along with war against the energy beings suddenly stopped. Twenty years later Todd becomes obsessed with time travel once again and wants to return to the Fourth Dimension. He assembles a new team after creating a new device to get him there as he begins a new series of explorations, along with his kids.

Is there life beyond Earth? NASA astrobiologist Dr. Chris McKay has searched the earth's most extreme environments on his quest to understand what factors are necessary to sustain life. Pamela S. Turner offers readers an inside look at Dr. McKay's research, explaining his findings and his hopes for future exploration both on Earth and beyond. Behind-the-scenes photos capture Dr. McKay, his expeditions, and the amazing microbes that survive against all odds.

An approach to understanding religion that draws on both humanities and natural science but rejects approaches that employ simple monisms and radical dualisms. In Beyond Heaven and Earth, Gabriel Levy argues that collective religious narratives and beliefs are part of nature; they are the basis for the formation of the narratives and beliefs of individuals. Religion grows out of the universe, but to make sense of it we have to recognize the paradox that the universe is both mental and material (or neither). We need both humanities and natural science approaches to study religion and religious meaning, Levy contends, but we must also recognize the limits of these approaches. First, we must make the dominant metaphysics that undergird the various disciplines of science and humanities more explicit, and second, we must reject those versions of metaphysics that maintain simple monisms and radical dualisms. Bringing Donald Davidson’s philosophy—a form of pragmatism known as anomalous monism—to bear on religion, Levy offers a blueprint for one way that the humanities and natural sciences can have a mutually respectful dialogue. Levy argues that in order to understand religions we have to take their semantic content seriously. We need to rethink such basic concepts as narrative fiction, information, agency, creativity, technology, and intimacy. In the course of his argument, Levy considers the relation between two closely related semantics, fiction and religion, and outlines a new approach to information. He then applies his theory to discrete cases: ancient texts, modern media, and intimacy.

This is a completely updated and revised version of a monograph published in 2002 by the NASA History Office under the original title Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes, 1958-2000. This new edition not only adds all events in robotic deep space exploration after 2000 and up to the end of 2016, but it also completely corrects and updates all accounts of missions from 1958 to 2000--Provided by publisher.

We are at the cusp of a golden age in space science, as increasingly more entrepreneurs—Elon Musk, Richard Branson, Jeff Bezos—are seduced by the commercial potential of human access to space. But Beyond Earth does not offer another wide-eyed technology fantasy: instead, it is grounded not only in the human capacity for invention and the appeal of adventure, but also in the bureaucratic, political, and scientific realities that present obstacles to space travel—realities that have hampered NASA's efforts ever since the Challenger disaster. In Beyond Earth, the authors offer groundbreaking research and argue persuasively that not Mars, but Titan—a moon of Saturn with a nitrogen atmosphere, a weather cycle, and an inexhaustible supply of cheap energy—offers the most realistic, and thrilling, prospect of life without support from Earth.

Seeking to reenergize Americans' passion for the space program, the value of further exploration of the Moon, and the importance of human beings on the final frontier, Claude A. Piantadosi presents a rich history of American space exploration and its major achievements. He emphasizes the importance of reclaiming national command of our manned program and continuing our unmanned space missions, and he stresses the many adventures that still await us in the unfolding universe. Acknowledging space exploration's practical and financial obstacles, Piantadosi challenges us to revitalize American leadership in space exploration in order to reap its scientific bounty. Piantadosi explains why space exploration, a captivating story of ambition, invention, and discovery, is also increasingly difficult and why space experts always seem to disagree. He argues that the future of the space program requires merging the practicalities of exploration with the constraints of human biology. Space science deals with the unknown, and the margin (and budget) for error is small. Lethal near-vacuum conditions, deadly cosmic radiation, microgravity, vast distances, and highly scattered resources remain immense physical problems. To forge ahead, America needs to develop affordable space transportation and flexible exploration strategies based in sound science. Piantadosi closes with suggestions for accomplishing these goals, combining his healthy skepticism as a scientist with an unshakable belief in space's untapped—and wholly worthwhile—potential.