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Sto caricando le informazioni... A Traveler’s Guide to the Starsdi Les Johnson
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Iscriviti per consentire a LibraryThing di scoprire se ti piacerà questo libro. Attualmente non vi sono conversazioni su questo libro. Just as in the pre-1957 period people like Arthur C Clarke wrote books foretelling how robotic and human exploration of near-Earth and larger solar-system space might proceed, so now physicist Johnson has done the analogous thing for interstellar travel. His time scales for realization are of course very different -- not years and decades but centuries and millennia. Propulsion methods -- primarily rockets and light-sails -- are well covered, as is the design of starships. The chapter on probably-impossible ideas includes schemes for faster-than-light travel and suspended animation (mere hibernation would not eliminate aging) but, unaccountably I think, makes no mention of a space elevator as a great help in a voyage's initial launch stage. nessuna recensione | aggiungi una recensione
Premi e riconoscimenti
"The discovery in the last few decades of thousands of exoplanets orbiting nearby stars has made the age-old dream of interstellar travel a newly urgent scientific question. Initiatives like NASA's 100-Year Starship and the billionaire-funded Breakthrough Starshot are now investigating and developing new technologies that could one day enable humans to explore, perhaps even colonize, distant solar systems. This short, accessible book brings readers to the forefront of this new frontier, laying out both the challenges to be navigated and the latest thinking and scientific developments that could allow us to overcome them. NASA scientist Les Johnson begins by surveying the vast, hostile landscape between stars we'll need to traverse: an extremely cold, mysterious expanse rife with harsh radiation and cosmic dust. He describes our first sallies into this sphere with forerunners like the Voyager craft, now well on their way into the interstellar medium, and new extrasolar probes currently being planned that will venture farther beyond our solar system and launch within our lifetimes. He next considers who our interstellar explorers will be-first robots, followed by humans-and what each will entail, before delving into the mind-boggling science of how one would actually propel an interstellar starship. Johnson explains the most promising approaches, from antimatter-powered rockets to the light-filled sails scientists like himself are piloting now, and discusses other design challenges to be overcome like power and communications. The book closes with a chapter exploring the real science of sci-fi and pop culture fixtures like warp drives and wormholes, and a conclusion that considers what it will take as a society to realize our interstellar future"-- Non sono state trovate descrizioni di biblioteche |
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Google Books — Sto caricando le informazioni... GeneriSistema Decimale Melvil (DDC)629.45Technology Engineering and allied operations Other Branches Astronauts and Space Travel Manned space flightClassificazione LCVotoMedia: Nessun voto.Sei tu?Diventa un autore di LibraryThing. |