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The End Of Eternity
''The End of Eternity'' is a 1955 science fiction novel by Isaac Asimov with mystery and thriller elements on the subjects of time travel and social engineering. Its premise is that of a causal loop, a type of temporal paradox in which events and their causes form a loop. In ''The End of Eternity'', members of the time-changing organization ''Eternity'' seek to ensure that the conditions that led to its founding occur as history says that they occurred. The protagonist, Andrew Harlan, is placed in a situation in which he must decide whether to allow the "circle" to close and ''Eternity'' to be founded or to allow the opposite to happen and prevent ''Eternity'' from having ever existed. Many years later, Asimov tied this novel into his broader ''Foundation'' Series by hinting in '' Foundation's Edge'' that it is set in a universe where ''Eternity'' had existed but was destroyed by Eternals, leading to an all-human galaxy later. The novel was shortlisted to the Hugo Award fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isaac Asimov
yi, יצחק אזימאװ , birth_date = , birth_place = Petrovichi, Russian SFSR , spouse = , relatives = , children = 2 , death_date = , death_place = Manhattan, New York City, U.S. , nationality = Russian (1920–1922)Soviet (1922–1928)American (1928–1992) , occupation = Writer, professor of biochemistry , years_active = 1939–1992 , genre = Science fiction (hard SF, social SF), mystery, popular science , subject = Popular science, science textbooks, essays, history, literary criticism , education = Columbia University ( BA, MA, PhD) , movement = Golden Age of Science Fiction , module = , signature = Isaac Asimov signature.svg Isaac Asimov ( ; 1920 – April 6, 1992) was an American writer and professor of biochemistry at Boston University. During his lifetime, Asimov was considered one of the "Big Three" science fiction writers, along with Robert A. Heinlein and Arthur C. Clarke. A prolific writer, he wrote or edited more than 500 books ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mushroom Cloud
A mushroom cloud is a distinctive mushroom-shaped flammagenitus cloud of debris, smoke and usually condensed water vapor resulting from a large explosion. The effect is most commonly associated with a nuclear explosion, but any sufficiently energetic detonation or deflagration will produce the same effect. They can be caused by powerful conventional weapons, like thermobaric weapons, including the ATBIP and GBU-43/B Massive Ordnance Air Blast. Some volcanic eruptions and impact events can produce natural mushroom clouds. Mushroom clouds result from the sudden formation of a large volume of lower-density gases at any altitude, causing a Rayleigh–Taylor instability. The buoyant mass of gas rises rapidly, resulting in turbulent vortices curling downward around its edges, forming a temporary vortex ring that draws up a central column, possibly with smoke, debris, condensed water vapor, or a combination of these, to form the "mushroom stem". The mass of gas plus entrained moist ai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lester Del Rey
Lester del Rey (June 2, 1915 – May 10, 1993) was an American science fiction author and editor. He was the author of many books in the juvenile Winston Science Fiction series, and the editor at Del Rey Books, the fantasy and science fiction imprint of Ballantine Books, along with his fourth wife Judy-Lynn del Rey. Birth name Del Rey often told people his real name was Ramon Felipe Alvarez-del Rey (and sometimes even Ramon Felipe San Juan Mario Silvio Enrico Smith Heartcourt-Brace Sierra y Alvarez del Rey y de los Verdes Stableford, Brian and Clute, John.del Rey, Lester, '' Encyclopedia of Science Fiction''. Retrieved September 9, 2020.). However, his sister has confirmed that his name was in fact Leonard Knapp. He also claimed that his family was killed in a car accident in 1935. In reality, the accident only killed his first wife. Career Writing career Del Rey first started publishing stories in pulp magazines in the late 1930s, at the dawn of the so-called Go ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The New York Times Book Review
''The New York Times Book Review'' (''NYTBR'') is a weekly paper-magazine supplement to the Sunday edition of ''The New York Times'' in which current non-fiction and fiction books are reviewed. It is one of the most influential and widely read book review publications in the industry. The offices are located near Times Square in New York City. Overview The ''New York Times'' has published a book review section since October 10, 1896, announcing: "We begin today the publication of a Supplement which contains reviews of new books ... and other interesting matter ... associated with news of the day." In 1911, the review was moved to Sundays, on the theory that it would be more appreciatively received by readers with a bit of time on their hands. The target audience is an intelligent, general-interest adult reader. The ''Times'' publishes two versions each week, one with a cover price sold via subscription, bookstores and newsstands; the other with no cover price included as an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The New York Times
''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid digital subscribers. It also is a producer of popular podcasts such as '' The Daily''. Founded in 1851 by Henry Jarvis Raymond and George Jones, it was initially published by Raymond, Jones & Company. The ''Times'' has won 132 Pulitzer Prizes, the most of any newspaper, and has long been regarded as a national " newspaper of record". For print it is ranked 18th in the world by circulation and 3rd in the U.S. The paper is owned by the New York Times Company, which is publicly traded. It has been governed by the Sulzberger family since 1896, through a dual-class share structure after its shares became publicly traded. A. G. Sulzberger, the paper's publisher and the company's chairman, is the fifth generation of the family to head the pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Alternate Asimovs
''The Alternate Asimovs'' (1986) is a collection of early science fiction drafts by American writer Isaac Asimov. Asimov mostly threw away early drafts. Just a few survived and were included in this anthology. It consists of three items: *''Grow Old With Me'', the original version of the novel '' Pebble in the Sky'', never published in this form *"The End of Eternity", an unpublished 20,000 word novella that was extensively revised before appearing as the novel ''The End of Eternity'' *"Belief", two versions of a short story ''Grow Old With Me'' This is a shorter and less refined version of the book ''Pebble in the Sky''; set in the very early days of the Trantorian Empire whose eventual decline had been described in the Foundation novels. The plot is largely the same, though the chief villain is less developed. Asimov also explained how he began with the idea that Earth was radioactive from an atomic war. As he learned more, he became unhappy with the notion, reckoning that a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pebble In The Sky
''Pebble in the Sky'' is a science fiction novel by American writer Isaac Asimov, published in 1950. This work is his first novel — parts of the ''Foundation'' series had appeared from 1942 onwards in magazines, but ''Foundation'' was not published in book form until 1951. The original ''Foundation'' books are also a string of linked episodes, whereas this is a complete story involving a single group of characters. Publication history ''Pebble in the Sky'' was originally written in the summer of 1947 under the title "Grow Old with Me" for '' Startling Stories'', whose editor Sam Merwin, Jr. had approached Asimov to write a forty thousand word short novel for the magazine. The title was an adaption of Robert Browning's ''Rabbi ben Ezra'', the first few lines of which (starting "Grow old along with me! / The best is yet to be...") were included in the final novel. It was rejected by ''Startling Stories'' on the basis that the magazine's emphasis was more on adventure than sci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galactic Empire Series
The ''Galactic Empire'' series (also called the ''Empire'' novels or trilogy) is a science fiction sequence of three of Isaac Asimov's earliest novels, and extended by one short story. They are connected by their early place in his published works and chronological placement within his overarching ''Foundation'' universe, set around the rise of Asimov's Galactic Empire, between the ''Robot'' and ''Foundation'' series to which they were linked in Asimov's later novels. Works in the series In order of internal chronology the ''Empire'' series consists of: # '' The Stars, Like Dust'' (1951), novel # ''The Currents of Space'' (1952), novel # ''Pebble in the Sky'' (1950), his first novel # "Blind Alley" (1945), a short story also set between the ''Robot'' and ''Foundation'' series (However, Asimov stated in 1988 in the "Author's Note" to ''Prelude to Foundation'' that book #6 was "The Currents of Space" (1952), and that this was "the first of my Empire novels," and that book #7 was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nova
A nova (plural novae or novas) is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star (hence the name "nova", which is Latin for "new") that slowly fades over weeks or months. Causes of the dramatic appearance of a nova vary, depending on the circumstances of the two progenitor stars. All observed novae involve white dwarfs in close binary systems. The main sub-classes of novae are classical novae, recurrent novae (RNe), and dwarf novae. They are all considered to be cataclysmic variable stars. Classical nova eruptions are the most common type. They are likely created in a close binary star system consisting of a white dwarf and either a main sequence, subgiant, or red giant star. When the orbital period falls in the range of several days to one day, the white dwarf is close enough to its companion star to start drawing accreted matter onto the surface of the white dwarf, which creates a dense but shallow atmosphere. This atmosphe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Galaxy Science Fiction
''Galaxy Science Fiction'' was an American digest-size science fiction magazine, published in Boston from 1950 to 1980. It was founded by a French-Italian company, World Editions, which was looking to break into the American market. World Editions hired as editor H. L. Gold, who rapidly made ''Galaxy'' the leading science fiction magazine of its time, focusing on stories about social issues rather than technology. Gold published many notable stories during his tenure, including Ray Bradbury's "The Fireman", later expanded as ''Fahrenheit 451''; Robert A. Heinlein's ''The Puppet Masters''; and Alfred Bester's ''The Demolished Man''. In 1952, the magazine was acquired by Robert Guinn, its printer. By the late 1950s, Frederik Pohl was helping Gold with most aspects of the magazine's production. When Gold's health worsened, Pohl took over as editor, starting officially at the end of 1961, though he had been doing the majority of the production work for some time. Under Pohl ''Gala ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Old Faithful
Old Faithful is a cone geyser in Yellowstone National Park in Wyoming, United States. It was named in 1870 during the Washburn–Langford–Doane Expedition and was the first geyser in the park to be named. It is a highly predictable geothermal feature and has erupted every 44 minutes to two hours since 2000. The geyser and the nearby Old Faithful Inn are part of the Old Faithful Historic District. History In the afternoon of September 18, 1870, the members of the Washburn-Langford-Doane Expedition traveled down the Firehole River from the Kepler Cascades and entered the Upper Geyser Basin. The first geyser that they saw was Old Faithful. Nathaniel P. Langford wrote in his 1871 Scribner's account of the expedition: In the early days of the park, Old Faithful was often used as a laundry: Eruptions More than 1,000,000 eruptions have been recorded. Harry Woodward first described a mathematical relationship between the duration and intervals of the eruptions in 1938. Old F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geyser
A geyser (, ) is a spring characterized by an intermittent discharge of water ejected turbulently and accompanied by steam. As a fairly rare phenomenon, the formation of geysers is due to particular hydrogeological conditions that exist only in a few places on Earth. Generally all geyser field sites are located near active volcanic areas, and the geyser effect is due to the proximity of magma. Generally, surface water works its way down to an average depth of around where it contacts hot rocks. The resultant boiling of the pressurized water results in the geyser effect of hot water and steam spraying out of the geyser's surface vent (a hydrothermal explosion). A geyser's eruptive activity may change or cease due to ongoing mineral deposition within the geyser plumbing, exchange of functions with nearby hot springs, earthquake influences, and human intervention. Like many other natural phenomena, geysers are not unique to Earth. Jet-like eruptions, often referred to as cryoge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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