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The speed of a spaceship is often expressed in terms of c, the metaphorical speed of light (one cell per generation) which in many cellular automata is the fastest that an effect can spread. For example, a glider in Conway's Game of Life is said to have a speed of c / 4 {\displaystyle c/4} , as it takes four generations for a given state to be ...
The first space rendezvous was accomplished by Gemini 6A and Gemini 7 in 1965.. Records and firsts in spaceflight are broadly divided into crewed and uncrewed categories. Records involving animal spaceflight have also been noted in earlier experimental flights, typically to establish the feasibility of sending humans to outer space.
Eric S. Raymond has proposed the glider as an emblem to represent the hacker subculture, as the Game of Life appeals to hackers, and the concept of the glider was "born at almost the same time as the Internet and Unix". [7] The emblem is in use in various places within the subculture. [8] [9]
Space folding (science fiction), a fictitious method of faster-than-light travel whereby the space-time continuum is "folded" Space folding , the specific portrayal of faster-than-light travel in Frank Herbert's Dune series; Spacetime curvature due to gravity, a central aspect of the general theory of relativity
The Alcubierre drive ([alkuˈβjere]) is a speculative warp drive idea according to which a spacecraft could achieve apparent faster-than-light travel by contracting space in front of it and expanding space behind it, under the assumption that a configurable energy-density field lower than that of vacuum (that is, negative mass) could be created.
[23]: 5 E. C. Tubb has been credited with playing an important role in the development of hyperspace lore; writing a number of space operas in the early 1950s in which space travel occurs through that medium. He was also one of the first writers to treat hyperspace as a central part of the plot rather than a convenient background gadget that ...
Artist rendition of a spaceship entering warp drive. Generic terms for engines enabling science fiction spacecraft propulsion include "space drive" and "star drive". [g] [2]: 198, 216 In 1977 The Visual Encyclopedia of Science Fiction listed the following means of space travel: anti-gravity, [h] atomic (nuclear), bloater, [i] cannon one-shot, [j] Dean drive, [k] faster-than-light (FTL ...
In May 2017, the spacecraft was renamed the Parker Solar Probe in honor of astrophysicist Eugene Newman Parker, [28] [29] who had proposed the existence of nanoflares as an explanation of coronal heating [30] as well as having developed a mathematical theory that predicted the existence of solar wind. [31] The solar probe cost NASA US$1.5 billion.