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Magellanic Clouds

(Encyclopedia) Magellanic CloudsMagellanic Cloudsmăjˌəlănˈĭk [key], two dwarf galaxies located in the far southern sky and visible to the unaided eye; they are classified as irregular because they…

radioactive isotope

(Encyclopedia) radioactive isotope or radioisotope, natural or artificially created isotope of a chemical element having an unstable nucleus that decays, emitting alpha, beta, or gamma rays until…

dream

(Encyclopedia) dream, mental activity associated with the rapid-eye-movement (REM) period of sleep. It is commonly made up of a number of visual images, scenes or thoughts expressed in terms of…

white dwarf

(Encyclopedia) white dwarf, in astronomy, a type of star that is abnormally faint for its white-hot temperature (see mass-luminosity relation). Typically, a white dwarf star has the mass of the sun…

megalithic monument

(Encyclopedia) megalithic monumentmegalithic monumentmĕgəlĭthˈĭk [key] [Gr.,=large stone], in archaeology, a construction involving one or several roughly hewn stone slabs of great size; it is…

projective geometry

(Encyclopedia) projective geometry, branch of geometry concerned with those properties of geometric figures that remain invariant under projection. The basic elements are points, lines, and planes,…

Lobster FAQ

Source: National Marine Fisheries Services' Northeast Fisheries Science CenterHow many kinds of lobsters are there in the United States? Two kinds of lobster-like crustaceans exist in U.S. waters…

DK Science: Health

EXERCISEHYGIENEDIETFIND OUT MOREMany factors play a part in keeping your body and mind in good health. These include taking plenty of EXERCISE, eating a healthy DIET, and observing some…

Theories of the Universe: Action at a Distance

Action at a DistanceTheories of the UniverseThe Universe As a HologramAction at a DistanceQuantum PotentialThe Importance of WholenessOrdered RealityThe Holographic Universe This astounding bit of…