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  2. Halo (religious iconography) - Wikipedia

    en.wikipedia.org/wiki/Halo_(religious_iconography)

    Such an aureola is often a mandorla ("almond-shaped" vesica piscis), especially around Christ in Majesty, who may well have a halo as well. In depictions of the Transfiguration of Jesus a more complicated shape is often seen, especially in the Eastern Orthodox tradition, as in the famous 15th century icon in the Tretyakov Gallery in Moscow. [41]

  3. Halo (optical phenomenon) - Wikipedia

    en.wikipedia.org/wiki/Halo_(optical_phenomenon)

    The particular shape and orientation of the crystals are responsible for the type of halo observed. Light is reflected and refracted by the ice crystals and may split into colors because of dispersion. The crystals behave like prisms and mirrors, refracting and reflecting light between their faces, sending shafts of light in particular directions.

  4. 22° halo - Wikipedia

    en.wikipedia.org/wiki/22°_halo

    22° halo around the Sun 22° halo around the Moon. A 22° halo is an atmospheric optical phenomenon that consists of a halo with an apparent diameter of approximately 22° around the Sun or Moon. Around the Sun, it may also be called a sun halo. [1] Around the Moon, it is also known as a moon ring, storm ring, or winter halo.

  5. Stellar halo - Wikipedia

    en.wikipedia.org/wiki/Stellar_halo

    These studies found halos with spherically shaped outer regions and flatter inner regions. [2] Large surveys in the 21st century such as the Sloan Digital Sky Survey have allowed the shape and distribution of the stellar halo to be investigated in much more detail; this data has been used to postulate a triaxial or oblate halo.

  6. Galactic halo - Wikipedia

    en.wikipedia.org/wiki/Galactic_halo

    The stellar halo is a nearly spherical population of field stars and globular clusters.It surrounds most disk galaxies as well as some elliptical galaxies of type cD.A low amount (about one percent) of a galaxy's stellar mass resides in the stellar halo, meaning its luminosity is much lower than other components of the galaxy.

  7. Dark matter halo - Wikipedia

    en.wikipedia.org/wiki/Dark_matter_halo

    The presence of dark matter (DM) in the halo is inferred from its gravitational effect on a spiral galaxy's rotation curve.Without large amounts of mass throughout the (roughly spherical) halo, the rotational velocity of the galaxy would decrease at large distances from the galactic center, just as the orbital speeds of the outer planets decrease with distance from the Sun.

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  9. Mandorla - Wikipedia

    en.wikipedia.org/wiki/Mandorla

    It is distinguished from a halo in that it encircles the entire body and not just the head. It is commonly used to frame the figure of Christ in Majesty in early medieval and Romanesque art, as well as Byzantine art of the same periods. It is the shape generally used for mediaeval ecclesiastical seals, secular seals generally being round.