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Sphere (disambiguation)

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A sphere is a three-dimensional object shaped like a ball; it may also refer to a sphere-like region or shell.

Sphere may also refer to:

Astronomy

  • Armillary sphere, a physical model of the celestial sphere
  • Celestial sphere, the astronomical description of the sky
  • Celestial spheres or planetary spheres, refer to a geocentric model of the universe and the associated postulate of a "Musica Universalis" (Music of the Spheres)
  • Dyson sphere, a hypothetical megastructure that encompasses a star and captures a large percentage of its solar power output
  • Hill sphere, the spherical region around an astronomical body where the primary gravitational influence on an orbiting object is that body
  • Spectro-Polarimetric High-Contrast Exoplanet Research (SPHERE) is an adaptive optics system and coronagraphic facility at the Very Large Telescope (VLT)
  • Sphere of influence (astrodynamics), similar to the Hill sphere, but smaller, only about 60% of the radius
  • Sphere of influence (black hole), a region around a supermassive black hole
  • SPHERES (Synchronized Position Hold, Engage, Reorient Experimental Satellites), a formation flight testbed developed by MIT's Space Systems Laboratory
  • SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer), a proposed space telescope

Human sciences

  • Separate spheres, an ideological term referring to separation between a private sphere and a public sphere in some societies
  • Sphere of influence, a metaphorical region of influence surrounding a country, person or concept

Mathematics

  • n-sphere, the set of points at fixed distance from a central point in n+1 dimensional space
  • Spherical surface, the boundary of a sphere (also known simply as sphere in mathematics)
  • Spherical volume, the region inside a sphere (also known as a ball in mathematics)
  • Unit sphere, the set of points at a distance of 1 from a central point

Arts, entertainment, and media

Architecture

Films

Literature

Music

Groups

Albums and songs

Other uses

See also

Topics referred to by the same term Disambiguation iconThis disambiguation page lists articles associated with the title Sphere.
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