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121Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
122PDP-11 — This article is about the PDP 11 series of minicomputers. For the PDP 11 processor architecture, see PDP 11 architecture. The PDP 11 was a series of 16 bit minicomputers sold by Digital Equipment Corporation (DEC) from 1970 into the 1990s, one of …
123Plate tectonics — The tectonic plates of the world were mapped in the second half of the 20th century …
124Blowback (arms) — Blowback is an operating system for autoloading firearms that utilizes energy created by combustion in the chamber and bore acting directly on the bolt face through the cartridge. Other operating systems are recoil operation, gas operation,… …
125Milky Way — This article is about the galaxy. For other uses, see Milky Way (disambiguation). Milky Way galaxy Image of the Milky Way s Galactic Center in the night sky above Paranal Observatory Observation data …
126Colonization of Venus — Venus The colonization of Venus has been a subject of much speculation and many works of science fiction since before the dawn of spaceflight, and is still much discussed. With the discovery of Venus hostile surface environment, attention has… …
127King (TV series) — infobox television show name = King caption = starring = Mark Rendall Kevin McDonald Julie Lemieux Robert Tinkler Cathal J. Dodd Marnie McPhail format = Animated series runtime = 30 minutes (with commercials) country = Canada network = Family… …
128Ocean planet — Illustration of a hypothetical ocean planet with a terrestrial atmosphere and two satellites An ocean planet (also termed a waterworld) is a hypothetical type of planet whose surface is completely covered with an ocean of water. Planetary objects …
