Les Johnson – författare

Two scientists give an enthusiastic, layperson's overview of a new supermaterial now in development that could transform many features of daily life, from creating new conveniences to improving health and safety.What if you discovered an infinitesimally thin material capable of conducting electricity, able to suspend millions of times its own weight, and yet porous enough to filter the murkiest water? And what if this incredible substance is created from the same element that fills the common pencil? That's graphene--a flat, two-dimensional, carbon-based molecule with a single sheet measuring only one atom thick.In this layperson's introduction to this revolutionary substance, a physicist and a chemist explain how graphene was developed, discuss the problems in scaling up production for large-scale commercial use, and forecast the potentially transformative effects of incorporating graphene into everyday life. Recent research developments include adding graphene to Silly Putty to make extremely sensitive and malleable medical sensors and compressing and fusing flakes of graphene to create a three-dimensional material that's ten times stronger than steel.This widely adaptable substance promises to change the way we interact with smartphones, laptops, information storage, and even condoms. It may also enable significant improvements to air purification, water filtration technologies, and drug delivery. This entertaining and widely accessible book offers a fascinating look into one of the most exciting developments in materials science in recent decades.

Interstellar Travel: Propulsion, Life Support, Communications, and the Long Journey addresses the technical challenges that must be overcome to make such journeys possible. Leading experts in the fields of space propulsion, power, communication, navigation, crew selection, safety and health provide detailed information about state-of-the-art technologies and approaches for each challenge, along with possible methods based on real science and engineering. This book offers in-depth, up-to-date and realistic technical and scientific considerations in the pursuit of interstellar travel and will be an essential reference for scientists, engineers, researchers and academics working on, or interested in, space development and space technologies. With a renewed interest in space exploration and development evidenced by the rise of the commercial space sector and various governments now planning to send humans back to the moon and to Mars, there is also growing interest in taking the next steps beyond the solar system and to the ultimate destination - planets circling other stars. With the rapid growth in the number of known exoplanets, people are now asking how we might make journeys to visit them.

Discusses the technical challenges that must be overcome to mount interstellar missionsFeatures various aspects of interstellar travel by the world's recognized leading experts in the fieldProvides referenceable data and analysis for both new and experienced researchers in the interstellar and deep-space exploration fields

Interstellar Travel: Purpose and Motivations is a comprehensive, technical look at the necessary considerations for interstellar travel addressed by leading experts in the field, from scientists studying possible destinations (exoplanets) and the vast distances between, to those concerned with building institutions and capabilities in society that could sustain such endeavors. In addition to the technical, medical, and anthropological aspects of deep space travel, the ethics and morality of spreading Earth-based life to other worlds is also examined.

In the first book of a three-book compilation, Interstellar Travel: Purpose and Motivations offers in-depth, up-to-date and realistic technical and scientific considerations in the pursuit of interstellar travel and is an integral reference for scientists, engineers, researchers and academics working on, or interested in, space development and space technologies. With a renewed interest in space exploration and development evidenced by the rise of the commercial space sector and various governments now planning to send humans back to the moon and to Mars, so also is interest in taking the next steps beyond the Solar System and to the ultimate destination - planets circling other stars.

Features detailed overviews with quantification of the technical challenges and potential benefits of interstellar missions Comprehensively covers the considerations for interstellar travel by the world's recognized leading experts in the field Features referenceable data and analysis for both new and experienced researchers in the interstellar and exoplanets fields

Interstellar Travel: After Arrival is a comprehensive, technical look at the necessary considerations for settlement on an extra solar planet following interstellar travel, addressed by leading experts in the fields of space development. The book features the current and future plans for lunar, Mars, and asteroid settlement, and how what we learn from such future endeavors might apply to settlement at destinations around other stars. In addition, scientists who have been considering the construction of large space structures and terraforming discuss realistic options to be considered.Other chapters cover necessary considerations such as whether terraforming is possible and how it might be accomplished, the ethical issues and scientific constraints to interacting with an alien biosphere, and what we might learn from settling within our own Solar System that would apply to settling elsewhere. The third book of a three-book compilation, this new release presents up-to-date and realistic technical and scientific considerations of the challenges that settling on an exoplanet would bring, including review of the current technological capabilities and how they might be put towards life on an extra solar planet.Features detailed discussions of the technical challenges to be overcome in establishing self-sufficient settlements on planets isolated from EarthDescribes the challenges and technical options available for establishing settlements on other planets, asteroids, and small bodies/moons by recognized leading expertsIncludes in-depth analysis of the technical and ethical issues associated with terraformingProvides data and analysis for both new and experienced researchers in the interstellar and deep-space exploration fields

Humans regularly visit the upper troposphere and ocean floor and technology has enabled a few to even reside above the atmosphere in space stations.For the next few millennia at least (barring breakthroughs), the human frontier will include the solar system and the nearest stars.

A brief guide to the real science of interstellar travelWith known exoplanets now numbering in the thousands and initiatives like 100 Year Starship and Breakthrough Starshot advancing the idea of interstellar travel, the age-old dream of venturing forth into the cosmos and perhaps even colonizing distant worlds may one day become a reality. A Traveler’s Guide to the Stars reveals how.Les Johnson takes you on a thrilling tour of the physics and technologies that may enable us to reach the stars. He discusses the latest exoplanet discoveries, promising interstellar missions on the not-so-distant horizon, and exciting new developments in space propulsion, power, robotics, communications, and more. But interstellar travel will not be easy, and it is not for the faint of heart. Johnson describes the harsh and forbidding expanse of space that awaits us, and he addresses the daunting challenges—both human and technological—that we will need to overcome in order to realize tomorrow’s possibilities.A Traveler’s Guide to the Stars is your passport to the next great frontier of human discovery, providing a rare inside look at the remarkable breakthroughs in science and technology that will help tomorrow’s space travelers chart a course for the stars.

A brief guide to the real science of interstellar travelWith known exoplanets now numbering in the thousands and initiatives like 100 Year Starship and Breakthrough Starshot advancing the idea of interstellar travel, the age-old dream of venturing forth into the cosmos and perhaps even colonizing distant worlds may one day become a reality. A Traveler’s Guide to the Stars reveals how.Les Johnson takes you on a thrilling tour of the physics and technologies that may enable us to reach the stars. He discusses the latest exoplanet discoveries, promising interstellar missions on the not-so-distant horizon, and exciting new developments in space propulsion, power, robotics, communications, and more. But interstellar travel will not be easy, and it is not for the faint of heart. Johnson describes the harsh and forbidding expanse of space that awaits us, and he addresses the daunting challenges—both human and technological—that we will need to overcome in order to realize tomorrow’s possibilities.A Traveler’s Guide to the Stars is your passport to the next great frontier of human discovery, providing a rare inside look at the remarkable breakthroughs in science and technology that will help tomorrow’s space travelers chart a course for the stars.

Sci-fi visionaries Travis S. Taylor (Solar Sails: A Novel Approach toInterplanetary Travel) and Les Johnson (Living Off the Land inSpace: Green Roads to the Cosmos) take readers "Back to the Moon" in thissaga of humanity's return to the lunar surface — possiblyforever.

Some humans may be content staying in one place, but many of us are curiousabout what’s beyond the next village, the next ocean, the next horizon.Are there others like us out there? How will we reach them? Others are concernedwith the survival of the species. It may be that we have to get out of Dodgebefore the lights go out on Earth. How can we accomplish this? Wonderfulquestions. Now get ready for some answers. Here is the science behind interstellar propulsion: reports from top tierscientists and engineers on starflight propulsion techniques that use only meansand methods that we currently know are scientifically possible. Here arein-depth essays on antimatter containment, solar sails, and fusion propulsion.And the human consequences? Here is speculation by a magnificent array ofaward-winning SF writers on what an interstellar voyage might look like, mightfeel like — might be like. It’s an all-star cast abounding with Hugoand Nebula award-winners, including Ben Bova, Mike Resnick, Jack McDevitt,Michael Bishop, and Sarah Hoyt.

“Sky Alert! What Happens When Satellites Fail” explores for the first time what our modern world would be like if we were suddenly to lose most, if not all, of our space assets. The author demonstrates humankind’s dependence on space satellites and show what might happen to various aspects of our economy, defense, and daily lives if they were suddenly destroyed. The book opens with a consideration of how our space assets might be lost in the first place: through orbital debris, war, and solar storms. The author then looks at what would happen if our satellites were lost, including the effect on weather forecasting, and the Global Positioning System, explaining GPS in detail and its importance to the military, including spy satellites and military reconnaissance, commerce, civilians, communications and remote sensing – both resource monitoring and locating and environmental monitoring and science. The effects of losing such assets as the International Space Station as well as such research satellites as the Hubble Space Telescope or the Chandra X-Ray Observatory are also considered. Part III of the book looks at how we can protect our satellites, preparing for the worst, reducing the growth and amount of orbital debris, preventing acts of war in space and hardening against space radiation. The book ends on an optimistic note: most spacefaring nations are now working together to develop new technologies to reduce the threat posed by orbital debris and in-space nuclear detonations and treaties exist to limit the development and use of weapons in space. Finally, it is hoped that it will not be long before we will be able to better predict and take precautions against solar storms. The global economy has now become so dependent upon satellites that their loss would be devastating – to the economy, to national security, and potentially, to the day-to-day survival of those who live in the world’s most advancedeconomies.

Space-based terrestrial power generation systems will work synergistically with Earth-based conservation. This book needs to be read urgently and widely, if we are to save ourselves from environmental disaster, reduce the risk of catastrophic cosmic impacts, and build a prosperous and sustainable future for all the creatures of Earth.

LOOMING DESTRUCTION FROM SPACE! It's the beginning of a new golden age of space exploration. Finally, humanity is taking the commercialization of space to the next level—mining asteroids. The new gold rush of the commercial space era has begun. Another commercial venture, an attempt to put a hotel on the Moon, is seeking the space tourism gold of the ultra wealthy. And it seems as if the dream of finally sending people to Mars is finally going to happen using a ship propelled by a powerful nuclear rocket. But space travel isn’t cut and dry, and there is nothing routine about it. In order to mine an asteroid the goal is to bring it closer to Earth, but orbital mechanics are tricky and close to Earth  proves to be far too close for comfort—with looming destruction from space about to become a grim reality.  Now astronauts, scientists, engineers, and people in all the burgeoning space businesses must team together to stop the asteroid before it is too late for humanity and the planet it calls home. About Travis S. Taylor: “[E]xplodes with inventive action.”—Publishers Weekly on Travis S. Taylor’s The Quantum Connection. “[Warp Speed] reads like Doc Smith writing Robert Ludlum. . .You won’t want to put it down.”—John Ringo About Rescue Mode by Ben Bova and Les Johnson: "... a suspenseful and compelling narrative of the first human spaceflight to Mars."—Booklist

Human civilization has evolved to the point at which we can consider tapping space resources and expanding beyond Earth’s atmosphere. The Introduction surveys possible motivations for large-scale human emigration to space. Since our early ancestors began to move out of Africa, humans have constantly expanded their range. Today, the pattern of human settlement extends from pole to pole. Humans regularly visit the upper troposphere and ocean floor and technology has enabled a few to even reside above the atmosphere in space stations.For the next few millennia at least (barring breakthroughs), the human frontier will include the solar system and the nearest stars. Will it better to settle the Moon, Mars, or a nearby asteroid and what environments can we expect to find in the vicinity of nearby stars are questions that need to be answered if mankind is to migrate into space.

The reality of sunlight-based sailing in space began in May 2010, and solar sail technology and science have continued to evolve rapidly through new space missions. It also discusses various sail systems that may use either sunlight or solar wind, and the design, fabrication and steering challenges associated with solar sails.

First contact with the seemingly impossible human civilization at Proxima Centauri is not going well. The Earth ships sent to render aid have not been able to reverse the contagion ravaging their population and, worse, many Proximans are now wondering if the humans from Earth are there for other, not so charitable, reasons. Can the extinction-level disaster faced at Proxima be reversed by the combined ingenuity of scientists from both worlds working together? Unsettling discoveries in the Proxima Centauri planetary system beg the questions: What if the evil gods depicted in Proxima’s ancient mythologies were real and far more powerful than even the humans from Earth with their late 21st-century technologies? Worse, what if their ancient oppressors never truly left? Praise for Travis S. Taylor: “. . . explodes with inventive action.” —Publishers Weekly on Travis S. Taylor’s The Quantum Connection “[Warp Speed] reads like Doc Smith writing Robert Ludlum . . . You won’t want to put it down.” —John Ringo Praise for Stellaris: People of the Stars, coedited by Les Johnson: “. . . a thought-provoking look at a selection of real-world challenges and speculative fiction solutions. . . . Readers will enjoy this collection that is as educational as it is entertaining.” —Booklist “This was an enjoyable collection of science fiction dealing with colonizing the stars. In the collection were several gems and the overall quality was high.” —Tangent Praise for Mission to Methone by Les Johnson: “The spirit of Arthur C. Clarke and his contemporaries is alive and well in Johnson’s old-fashioned first-contact novel, set in 2068. . . . includes plenty of realistic detail and puts fun new spins on familiar alien concepts. . . . There’s a great deal here for fans of early hard SF.” —Publishers Weekly “With equal parts science fiction and international intrigue. . . . an exciting, fast-paced read that you will not want to put down.” —Booklist Praise for Rescue Mode by Ben Bova and Les Johnson: “. . . a suspenseful and compelling narrative of the first human spaceflight to Mars.” —Booklist

THE ANSWER LIES OUT THEREThe year is 2072. At the lunar farside radio observatory, an old-school radio broadcast is detected, similar to those broadcast on Earth in the 1940s, but in an unknown language, coming from an impossible source, and originating at an equally impossible location—Proxima Centauri. While the nations of Earth debate making first contact, they learn that the Proximans are facing an extinction-level disaster, forcing a decision: will Earth send a ship on a multiyear trip to provide aid?Interstellar travel is not easy, and by traveling at the speeds required to arrive before disaster strikes at Proxima, humans will learn firsthand the effects of Einstein’s Special Relativity and be forced to ponder the ultimate of questions of "Are we alone in the universe?” and “What does it mean to be human?”About Travis S. Taylor:“[E]xplodes with inventive action.”—Publishers Weekly on Travis S. Taylor’s The Quantum Connection“[Warp Speed] reads like Doc Smith writing Robert Ludlum. . .You won’t want to put it down.”—John RingoAbout Stellaris: People of the Stars, coedited by Les Johnson:“[A] thought-provoking look at a selection of real-world challenges and speculative fiction solutions. . . . Readers will enjoy this collection that is as educational as it is entertaining.”—Booklist“This was an enjoyable collection of science fiction dealing with colonizing the stars. In the collection were several gems and the overall quality was high.”—TangentAbout Mission to Methone, by Les Johnson:“The spirit of Arthur C. Clarke and his contemporaries is alive and well in Johnson’s old-fashioned first-contact novel, set in 2068. . . . includes plenty of realistic detail and puts fun new spins on familiar alien concepts. . . . There’s a great deal here for fans of early hard SF.”—Publishers Weekly“With equal parts science fiction and international intrigue. . . . an exciting, fast-paced read that you will not want to put down.”—BooklistAbout Rescue Mode, by Ben Bova and Les Johnson:“. . . a suspenseful and compelling narrative of the first human spaceflight to Mars.”—Booklist

BUILD STARSHIPS NOWSome humans may be content staying in one place, but many of us are curious about what’s beyond the next village, the next ocean, the next horizon. Are there others like us out there? How will we reach them? Others are concerned with the survival of the species. It may be that we have to get out of Dodge before the lights go out on Earth. How can we accomplish this? Wonderful questions. Now get ready for some answers.Here is the science behind interstellar propulsion: reports from top tier scientists and engineers on starflight propulsion techniques that use only means and methods that we currently know are scientifically possible. Here are in-depth essays on antimatter containment, solar sails, and fusion propulsion. And the human consequences? Here is speculation by a magnificent array of award-winning SF writers on what an interstellar voyage might look like, might feel like—might be like. It’s an all-star cast abounding with Hugo and Nebula award winners: Ben Bova, Mike Resnick, Jack McDevitt, Michael Bishop, Sarah A. Hoyt, and more.Comprehensive teacher's guide available.About Stellaris: People of the Stars, coedited by Les Johnson:“[A] thought-provoking look at a selection of real-world challenges and speculative fiction solutions. . . . Readers will enjoy this collection that is as educational as it is entertaining.”—Booklist“This was an enjoyable collection of science fiction dealing with colonizing the stars. In the collection were several gems and the overall quality was high.”—Tangent About Mission to Methone, by Les Johnson:“The spirit of Arthur C. Clarke and his contemporaries is alive and well in Johnson’s old-fashioned first-contact novel, set in 2068. . . . includes plenty of realistic detail and puts fun new spins on familiar alien concepts. . . . There’s a great deal here for fans of early hard SF.”—Publishers Weekly“With equal parts science fiction and international intrigue. . . . an exciting, fast-paced read that you will not want to put down.”—Booklist About Rescue Mode, by Ben Bova and Les Johnson:“. . . a suspenseful and compelling narrative of the first human spaceflight to Mars.”—Booklist About Jack McDevitt:“The logical heir to Isaac Asimov and Arthur C. Clarke.”—Stephen King“‘Why read Jack McDevitt?’ The question should be: ‘Who among us is such a slow pony that s/he isn’t reading McDevitt?’”—Harlan Ellison “You should definitely read Jack McDevitt.”—Gregory Benford

The answer lies out there.The year is 2072. At the lunar farside radio observatory, an old-school radio broadcast is detected, similar to those broadcast on Earth in the 1940s, but in an unknown language, coming from an impossible source, and originating at an equally impossible location—Proxima Centauri. While the nations of Earth debate making first contact, they learn that the Proximans are facing an extinction-level disaster, forcing a decision: will Earth send a ship on a multiyear trip to provide aid?Interstellar travel is not easy, and by traveling at the speeds required to arrive before disaster strikes at Proxima, humans will learn firsthand the effects of Einstein’s Special Relativity and be forced to ponder the ultimate questions: Are we alone in the universe? What does it mean to be human?About Travis S. Taylor:“. . . explodes with inventive action.”—Publishers Weekly on Travis S. Taylor’s The Quantum Connection“[Warp Speed] reads like Doc Smith writing Robert Ludlum . . . You won’t want to put it down.”—John RingoAbout Stellaris: People of the Stars, coedited by Les Johnson:“. . . a thought-provoking look at a selection of real-world challenges and speculative fiction solutions. . . . Readers will enjoy this collection that is as educational as it is entertaining.”—Booklist“This was an enjoyable collection of science fiction dealing with colonizing the stars. In the collection were several gems and the overall quality was high.”—TangentAbout Mission to Methone by Les Johnson:“The spirit of Arthur C. Clarke and his contemporaries is alive and well in Johnson’s old-fashioned first-contact novel, set in 2068. . . . includes plenty of realistic detail and puts fun new spins on familiar alien concepts. . . . There’s a great deal here for fans of early hard SF.”—Publishers Weekly“With equal parts science fiction and international intrigue. . . . an exciting, fast-paced read that you will not want to put down.”—BooklistAbout Rescue Mode by Ben Bova and Les Johnson:“. . . a suspenseful and compelling narrative of the first human spaceflight to Mars.”—Booklist

NO TIME LIKE THE PRESENTHumanity has finally made it to the stars. Colony worlds thrive and there is general peace among the settled systems. Until now.Matte black ships of an advanced design appear in colonial systems. Their drives and weapons are not extremely advanced beyond their Terran counterparts—just superior enough to be utterly devastating. Colonies and their populations are obliterated. Once-settled worlds are rendered radioactive wastelands. Earth herself lies defenseless before the marauding enemy.DEFEND THE SKIES OF EARTHStanding against the invasion are two of humanity’s finest starship captains: Winslow Price of the British Space Navy and Anika Ahuja of the Indian Space Forces. Compatriots. Fierce competitors. Former lovers. Now they are on a quest that will plumb the scientific wells of existence, where the primordial knot of spacetime may be unraveling. Price and Ahuja are sworn to do whatever it takes to defend Earth and humanity from ultimate obliteration by an enemy that will not even speak its name. Even if it pushes each to the brink of life and death in battle. Even if it leads each beyond space and time—and to the edge of ultimate possibility!TAKE THE BATTLE TO THE STARS“Johnson, a NASA physicist, brings verisimilitude and scientific accuracy to this adventure, and his passion for the details of space travel will undoubtedly please readers looking for old-school hard science fiction.”  —Publishers WeeklyAbout Mission to Methone:“The spirit of Arthur C. Clarke and his contemporaries is alive and well in Johnson’s old-fashioned first-contact novel, set in 2068. . . . includes plenty of realistic detail and puts fun new spins on familiar alien concepts. . . . There’s a great deal here for fans of early hard SF.”—Publishers Weekly“With equal parts science fiction and international intrigue . . . an exciting, fast-paced read that you will not want to put down.”—BooklistAbout Rescue Mode by Ben Bova and Les Johnson:“. . . a suspenseful and compelling narrative of the first human spaceflight to Mars.”—Booklist

Traveling to the stars will be difficult, but not, perhaps, the most difficult part. What about when we get to another star? What then? Will the planets be immediately habitable? Not likely. Will those who undertook the journey be able to easily turn around and come home if they don’t find “Earth 2.0?” Almost certainly not. Therein the lies the challenge: Finding worlds that are potentially habitable and then taking the time, perhaps centuries, to make them compatible with Earth life. They will encounter mysteries and unexpected challenges, but the human spirit will endure. Join this diverse group of science fiction writers and scientists as they take up the challenge of The Ross 248 Project.

Traveling to the stars will be difficult, but not, perhaps, the most difficult part. What about when we get to another star? What then? Will the planets be immediately habitable? Not likely. Will those who undertook the journey be able to easily turn around and come home if they don’t find “Earth 2.0”? Almost certainly not. Therein the lies the challenge: Finding worlds that are potentially habitable and then taking the time, perhaps centuries, to make them compatible with Earth life. The settlers at the nearby red dwarf star, Ross 248, will encounter mysteries and unexpected challenges, but the human spirit will endure. Join this diverse group of science fiction writers and scientists as they take up the challenge of The Ross 248 Project.Stories and speculative nonfiction about life under a crimson sun, contributions by . . .Contributors:USAF Lt General (Ret) Steven KwastPatrick ChilesStephanie OsbornBrent ZiarnickLaura MontgomeryDaniel M. Hoyt & E. Marshall HoytMatthew WilliamsD.J. ButlerRobert E. HampsonMonalisa FosterJ.L. CurtisK.S. DanielsLes Johnson & Ken RoyPraise for A Traveler’s Guide to the Stars by Les Johnson:“We effortlessly travel round and round our sun, and we wonder: How hard would it be, really, to travel to another star? Les Johnson shows us the rocket science we’d need; that’s easy enough. But then he describes with wonderful detail the Starshot nanocrafts, chipsats, Starwisps, worldships, and metamaterial LightSails that we might use. It’s a flight of imagination backed up with real out-of-this-world science.” —Bill Nye“Les Johnson is that rare breed of writer who can make rocket science comprehensible even to the layperson. He has more than paid his dues in the field, and his enthusiasm for the cause of interstellar exploration shines through. But so does his sense of humor, his humanity, and his zest for life. This is highly recommended stuff.” —David Weber“Is humanity ready to take on the immensities outside our solar system? This traveler’s guide lays out methods and means that may enable our first steps into the great unknown beyond the sun’s familiar campfire.” —David BrinPraise for Mission to Methone:“The spirit of Arthur C. Clarke and his contemporaries is alive and well in Johnson’s old-fashioned first-contact novel, set in 2068. . . . There’s a great deal here for fans of early hard SF.” —Publishers WeeklyPraise for The Spacetime War:“Johnson, a NASA physicist, brings verisimilitude and scientific accuracy to this adventure, and his passion for the details of space travel will undoubtedly please readers looking for old-school hard science fiction. His narrative enjoys a slow-building sense of development as he gradually unravels multiple mysteries . . . Johnson’s fans will find plenty to enjoy.” —Publishers Weekly