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Elements of some cosmological models
The celestial spheres, or celestial orbs, were the fundamental entities of the cosmological models developed by Plato, Eudoxus, Aristotle, Ptolemy, Copernicus
Celestial_spheres
Conceptual tool in astronomy
In astronomy and navigation, the celestial sphere is an abstract sphere that has an arbitrarily large radius and is concentric to Earth. All objects in
Celestial_sphere
Classical theories concerning movement of spheres
different theories about the dynamics of the celestial spheres. They explained the motions of the various nested spheres in terms of the materials of which they
Dynamics of the celestial spheres
Dynamics_of_the_celestial_spheres
Model of objects in the sky consisting of a framework of rings
armillary sphere (variations are known as spherical astrolabe, armilla, or armil) is a model of objects in the sky (on the celestial sphere), consisting
Armillary_sphere
1543 book by Copernicus describing his heliocentric theory of the universe
De revolutionibus orbium coelestium (On the Revolutions of the Heavenly Spheres) is the seminal work on the heliocentric theory[citation needed] of the
De revolutionibus orbium coelestium
De_revolutionibus_orbium_coelestium
Imaginary sky rotation points
and south celestial poles are the two points in the sky where Earth's axis of rotation, indefinitely extended, intersects the celestial sphere. The north
Celestial_pole
System for specifying positions of celestial objects
direction on a celestial sphere, if the object's distance is unknown or trivial. Spherical coordinates, projected on the celestial sphere, are analogous
Astronomical coordinate systems
Astronomical_coordinate_systems
Southern half of the celestial sphere
southern celestial hemisphere, also called the Southern Sky, is the southern half of the celestial sphere; that is, it lies south of the celestial equator
Southern_celestial_hemisphere
Postulated primary cause of all activity in the universe
classical planets arising from uniform circular motions of celestial spheres. While the number of spheres in the model itself was subject to change (47 or 55)
Unmoved_mover
Set of points equidistant from a center
including pressure vessels and most curved mirrors and lenses are based on spheres. Spheres roll smoothly in any direction, so most balls used in sports and toys
Sphere
Natural sciences as described by Aristotle
the cosmos into concentric spheres, with the Earth at the centre and celestial spheres around it. The terrestrial sphere was made of four elements, namely
Aristotelian_physics
Northern half of the celestial sphere
northern celestial hemisphere, also called the Northern Sky, is the northern half of the celestial sphere; that is, it lies north of the celestial equator
Northern_celestial_hemisphere
Concept of a world of celestial spheres
New Age philosophies and mystery religions. It is the world of the celestial spheres, crossed by the soul in its astral body on the way to being born and
Astral_plane
Projection of Earth's equator out into space
The celestial equator is the great circle of the imaginary celestial sphere on the same plane as the equator of a planet, by convention generally Earth
Celestial_equator
Ancient Greek geocentric cosmological model
model of concentric (or homocentric) spheres, developed by Eudoxus, Callippus, and Aristotle, employed celestial spheres all centered on the Earth. In this
Concentric_spheres
Apparent path of the Sun on the celestial sphere
ecliptic or ecliptic plane is the apparent path of the Sun on the celestial sphere, resulting from Earth's orbit around the Sun. It was a central concept
Ecliptic
Topics referred to by the same term
upon the celestial sphere Celestial spheres, fundamental entities of the cosmological models developed by Plato, Aristotle, and others Celestial (Circle
Celestial
Sculpture
The Celestial Sphere (also known as the Woodrow Wilson Memorial Sphere) is an armillary sphere artpiece situated in the Palais des Nations in Geneva, Switzerland
Celestial Sphere Woodrow Wilson Memorial
Celestial_Sphere_Woodrow_Wilson_Memorial
divided into five spheres: five are part of the celestial sphere of the sun (Mars, Jupiter, Saturn, the fixed stars, and the "Great Sphere" (al-falak al-aʿẓam))
Cosmology_in_the_Muslim_world
Group of stars on the celestial sphere
A constellation is an area on the celestial sphere in which a group of visible stars forms a perceived pattern or outline, typically representing an animal
Constellation
Astronomical instrument
(Saturn). The depicted device also had celestial spheres, following the Ptolemaic model, and Earth was shown as a blue sphere with circles of geographic coordinates
Astrolabe
Classical element
motion. Aristotle also stated that celestial spheres made of aether held the stars and planets. The idea of aethereal spheres moving with natural circular motion
Aether_(classical_element)
Scale model of a celestial body
A globe is a spherical model of Earth, of some other celestial body, or of the celestial sphere. Globes serve purposes similar to maps, but, unlike maps
Globe
Supposed celestial phenomenon in the Holy Roman Empire
exhausted combatant spheres falling to earth in clouds of smoke. The broadsheet claims that witnesses observed hundreds of spheres, cylinders, and other
1561 celestial phenomenon over Nuremberg
1561_celestial_phenomenon_over_Nuremberg
Type of astronomical bodies
stars are fixed within their celestial spheres, but the spheres themselves are not fixed. The rotations of these spheres thus explain the subtle movements
Fixed_stars
sub-disciplines, and related fields. Astronomy is concerned with the study of celestial objects and phenomena that originate outside the atmosphere of Earth.
Glossary_of_astronomy
Ancient philosophical concept
called music of the spheres or harmony of the spheres, is a philosophical concept that regards proportions in the movements of celestial bodies—the Sun, Moon
Musica_universalis
Topics referred to by the same term
Celestial sphere, the astronomical description of the sky Celestial spheres or planetary spheres, refer to a geocentric model of the universe and the associated
Sphere_(disambiguation)
Deity in Greek mythology
Earth on his shoulders, but Classical art shows Atlas holding the celestial spheres, not the terrestrial globe; the solidity of the marble globe borne
Atlas_(mythology)
Imaginary point directly above a particular location, on the imaginary celestial sphere
The zenith (UK: /ˈzɛnɪθ/, US: /ˈziː-/) is the imaginary point on the celestial sphere directly "above" a particular location. "Above" means in the vertical
Zenith
Socrates' explation to Glaucon that souls must be immortal
in the afterlife, including an account of metempsychosis and the celestial spheres of the astral plane. The tale includes the idea that moral people
Myth_of_Er
Radical shift in Western cosmology
even infinite universe in opposition to the ancient orthodoxy of celestial spheres. William Gilbert also argued (correctly) that Copernicus was right
Copernican_Revolution
Mathematician and astronomer (1473–1543)
book De revolutionibus orbium coelestium (On the Revolutions of the Celestial Spheres), just before his death in 1543, was a major event in the history
Nicolaus_Copernicus
Superseded description of the Universe with Earth at the center
rotating spheres surrounding the Earth, all concentric with it. (The number is so high because several spheres are needed for each planet.) These spheres, known
Geocentrism
Diagram used in various mystical traditions
spheres were of the same size, the lines became wide paths, the spheres were aligned into 3 distinct columns, Malkuth was connected to three spheres,
Tree_of_life_(Kabbalah)
Italian narrative poem by Dante Alighieri
seven lowest spheres of Heaven deal solely with the cardinal virtues of Prudence, Fortitude, Justice and Temperance. The first three spheres involve a deficiency
Divine_Comedy
Star charts arranged on a globe
positioned at the centre of the celestial sphere, is of the gnomonic projection inside of the celestial sphere, whereas the celestial globe is orthographic projection
Celestial_globe
Type of celestial coordinate system
separating the hemispheres is the celestial horizon, which is defined as the great circle on the celestial sphere whose plane is normal to the local
Horizontal_coordinate_system
Ancient Roman statue of Greek Deity
Egyptian bas-relief depicting constellations Globe Celestial cartography Celestial sphere Celestial spheres Early world maps Zodiac synagogue mosaic Valerio
Farnese_Atlas
Branch of astronomy
which combines celestial mechanics with numerical analysis and astronomical and spacecraft data. Dynamics of the celestial spheres concerns pre-Newtonian
Celestial_mechanics
Timekeeping system on Earth relative to the celestial sphere
astronomers. Using sidereal time and the celestial coordinate system, it is easy to locate the positions of celestial objects in the night sky. Sidereal time
Sidereal_time
Unobstructed view upward from Earth
In the field of astronomy, the sky is also called the celestial sphere. This is an abstract sphere, concentric to the Earth, on which the Sun, Moon, planets
Sky
Work by Aristotle
Physics (Aristotle) Aristotelian physics Dynamics of the celestial spheres Celestial spheres Aristotle (1922). Stocks, John Leofric (ed.). "De caelo"
On_the_Heavens
Outermost moving sphere in the geocentric model of the universe
moving of all the spheres. The total number of celestial spheres was not fixed. In this 16th-century illustration, the firmament (sphere of fixed stars)
Primum_Mobile
seems to turn around the North star, which led him to the concept of a Celestial sphere around Earth. And, as the sky seems to vary with latitude, he also
Ancient_Greek_astronomy
Twice-annual astronomical event when the Sun is farthest from above the Earth's equator
most northerly or southerly sun path relative to the celestial equator on the celestial sphere. Two solstices occur annually, around 20–22 June and 20–22
Solstice
Great semicircle passing through the celestial poles
anti-meridian), and the intersection of the plane with the celestial sphere is the celestial meridian for that location and time. There are several ways
Meridian_(astronomy)
American physicist (born 1993)
American theoretical physicist specializing in high energy physics and celestial holography at the Perimeter Institute for Theoretical Physics. Pasterski
Sabrina_Pasterski
Seminal work on cosmography
Qazwini's cosmography consists of two parts, the first part is celestial, dealing with the spheres of the heaven with its inhabitants, the angels, and chronology
Aja'ib_al-Makhluqat
Time period in ancient historical and astrological theories of time
continuous motion of the celestial sphere. This discovery was groundbreaking because it revealed that the celestial sphere was not as fixed as previously
Astrological_age
Collection of maps
Earth. Advances in astronomy have also resulted in atlases of the celestial sphere or of other planets. Atlases have traditionally been bound into book
Atlas
Area of the sky divided into twelve signs
approximately 8° north and south celestial latitude of the ecliptic – the apparent path of the Sun across the celestial sphere over the course of the year
Zodiac
Point on the celestial sphere
constellation of Aries, it is one of the two points on the celestial sphere at which the celestial equator crosses the ecliptic, the other being the first
First_point_of_Aries
Astronomical location
an equinox is either of two places on the celestial sphere at which the ecliptic intersects the celestial equator. Although there are two such intersections
Equinox (celestial coordinates)
Equinox_(celestial_coordinates)
Region in the geocentric cosmos below the Moon
to the sublunary sphere. Medieval scholastics like Thomas Aquinas, who charted the division between celestial and sublunary spheres in his work Summa
Sublunary_sphere
Danish astronomer (1546–1601)
prevailing theory of solid celestial spheres. With the comet likely traveling between Mercury and Venus, the notion of these rigid spheres became untenable. It
Tycho_Brahe
Designated common star constellations
constellations sharing some defining characteristic, such as proximity on the celestial sphere, common historical origin, or common mythological theme. In the Western
Constellation_family
Apparent solar time minus mean solar time
representing the angular offset of the Sun from its mean position on the celestial sphere as viewed from Earth. The equation of time values for each day of the
Equation_of_time
Jewish mythological griffin-like bird
] The creation of the fifth day, the animal world, rules over the celestial spheres. Witness the Ziz, which can darken the sun with its pinions. Non-Jews
Ziz
The Moon's circuit around Earth
distance of approximately its diameter, or about half a degree on the celestial sphere, each hour. The Moon differs from most regular satellites of other
Orbit_of_the_Moon
Astronomical coordinate analogous to latitude
(abbreviated dec; symbol δ) is the angular distance from the celestial equator on the celestial sphere; when paired with right ascension, it forms the equatorial
Declination
Change of rotational axis in an astronomical body
grid around the equator) moves. The celestial equator is just the Earth's equator projected onto the celestial sphere, so it moves as the Earth's equatorial
Axial_precession
Calculating the Sun's location in the sky at a given time and place
year, the Sun appears to move with respect to the fixed stars on the celestial sphere, along a circular path called the ecliptic. Earth's rotation about
Position_of_the_Sun
Celestial coordinate system used to specify the positions of celestial objects
consisting of the projection of Earth's equator onto the celestial sphere (forming the celestial equator), a primary direction towards the March equinox
Equatorial_coordinate_system
Celestial coordinate system used to describe Solar System objects
In astronomy, the ecliptic coordinate system is a celestial coordinate system commonly used for representing the apparent positions, orbits, and pole
Ecliptic_coordinate_system
Measurement unit for time
Science". 2023-07-20. Retrieved 2025-11-18. "Sidereal time | Celestial Coordinates, Celestial Sphere & Equinoxes | Britannica". www.britannica.com. Retrieved
Unit_of_time
Astrological chart or diagram
horoscope in English include natal chart, astrological chart, astro-chart, celestial map, sky-map, star-chart, cosmogram, vitasphere, radical chart, radix
Horoscope
Science of measuring the shape, orientation, and gravity of Earth
for the south celestial pole.) Celestial equator: the (instantaneous) intersection of Earth's equatorial plane with the celestial sphere. Meridian plane:
Geodesy
Part of astronomy concerned with mapping of stars
with mapping stars, galaxies, and other astronomical objects on the celestial sphere. Measuring the position and light of charted objects requires a variety
Celestial_cartography
Hindu deity representing ascending lunar node
Rāhu (Sanskrit: राहु, ) is one of the nine major celestial bodies (navagraha) in Hindu texts and the king of meteors. It represents the ascension of the
Rahu
Constellation in the northern celestial hemisphere
and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere. The name comes from Latin: Boōtēs, which comes from Ancient Greek:
Boötes
The Celestial Sphere is a large scale oratorio for chorus and orchestra by Charles Wuorinen, commissioned by Augustana College (Rock Island, Illinois)
The_Celestial_Sphere
Ancient Egyptian primordial god
Greeks associated Shu with Atlas, the primordial Titan who held up the celestial spheres, as they are both depicted holding up the sky. According to the Heliopolitan
Shu_(god)
Measure in 3-dimensional geometry
the celestial sphere that an astronomical observer positioned at latitude θ can see as the Earth rotates. At the equator all of the celestial sphere is
Solid_angle
are among the brightest and span thirty-eight constellations of the celestial sphere from the declination of −70° to +89°. Many of the selected stars were
List_of_stars_for_navigation
Hindu text on astrology
Astrological sign Axial tilt Azimuth Cardinal direction Celestial equator Celestial sphere Celestial spheres Center of mass Circular orbit Deferent and epicycle
Vedanga_Jyotisha
Time of one rotation around a planet axis
fluctuation of a solar day, and stellar day and sidereal day (using the celestial sphere) used for astronomy. In some countries outside of the tropics, daylight
Day
Earth's axis, or a Heaven-Earth connection
axis of Earth between the celestial poles. In a geocentric coordinate system, this is the axis of rotation of the celestial sphere. Consequently, in ancient
Axis_mundi
Ancient Greek analogue astronomical computer
front face was to position astronomical bodies with respect to the celestial sphere along the ecliptic, in reference to the observer's position on the
Antikythera_mechanism
Coordinates used in the equatorial coordinate system
with the declination to fully specify the location of a point on the celestial sphere in the equatorial coordinate system. The local hour angle (LHA) of
Hour_angle
Gnostic cosmology of eight heavens
theories had introduced the concept of seven planetary spheres with an eighth above them, the sphere of the fixed stars. In the system of Valentinus, the
Ogdoad_(Gnosticism)
Sanskrit astronomical treatise by Aryabhata
verses): Geometric/trigonometric aspects of the celestial sphere, features of the ecliptic, celestial equator, node, shape of the Earth, cause of day
Aryabhatiya
from a previous Gunpla academy that was owned by PPSE. Celestial Sphere gets its name from Celestial Being of Mobile Suit Gundam 00. Wilfrid Kijima (キジマ・ウィルフリッド
List of Gundam Build Fighters Try characters
List_of_Gundam_Build_Fighters_Try_characters
Painting attributed to Leonardo da Vinci
his left, signalling his role as Salvator Mundi and representing the celestial sphere of the heavens. Approximately thirty copies and variations of the work
Salvator_Mundi_(painting)
Coordinate frames
ECI. The ECI frame is also useful for specifying the direction toward celestial objects: To represent the positions and velocities of terrestrial objects
Earth-centered_inertial
Polarization pattern of the daytime sky
9 o'clock, 6 o'clock, and 3 o'clock (counter-clockwise around the celestial sphere, since the observer is looking up at the sky). Note that because the
Rayleigh_sky_model
Third part of Dante's Divine Comedy
through the sphere of fire believed to exist in the earth's upper atmosphere (Canto I), Beatrice guides Dante through the nine celestial spheres of Heaven
Paradiso
Historical place in New Delhi
constellations by measuring the latitude and longitude of a celestial object at the very moment the celestial object crosses the meridian. Between 1727 and 1734
Jantar_Mantar,_New_Delhi
Polish academic and diplomat (c. 1445 - c. 1497)
figuring out the number of celestial orbs or spheres that lay in the heavens. Averroes refused to believe that there was a ninth sphere in the heavens. He believed
Albert_Brudzewski
Angle between the rotational axis and orbital axis of a body
ecliptic, being the angle between the ecliptic and the celestial equator on the celestial sphere. It is denoted by the Greek letter ε. Earth currently
Axial_tilt
Direction on Earth's surface
representation avoids those limitations. The celestial pole is the location on the imaginary celestial sphere where an imaginary extension of the rotational
True_north
French philosopher (1325–1382)
celestial spheres, all the movements that we see in the heavens that are computed by the astronomers would appear exactly the same as if the spheres were
Nicole_Oresme
Lie group of Lorentz transformations
Minkowski spacetime and are modeled by points on the celestial sphere. Then a given point on the celestial sphere can be associated with ξ = u + iv, a complex
Lorentz_group
Class of star chart
planisphere. The term planisphere contrasts with armillary sphere, where the celestial sphere is represented by a three-dimensional framework of rings.
Planisphere
Iranian Shia Islamic scholar (1547–1621)
the context of Islamic astronomy. Tashrīḥ al-aflāk (Anatomy of the celestial spheres), a summary of theoretical astronomy where he affirms the view that
Baha_al-Din_al-Amili
Astronomical equivalent of longitude
these astronomical coordinates specify the location of a point on the celestial sphere in the equatorial coordinate system. An old term, right ascension (Latin:
Right_ascension
One hundred years, from 1501 to 1600
met with strong resistance, and Tycho Brahe refuted the theory of celestial spheres through observational measurement of the 1572 appearance of a Milky
16th_century
Diagrammatic representation of Sun's position over a period of time
line along the celestial equator. The north–south component of the analemma shows the Sun's declination, its latitude on the celestial sphere, or the latitude
Analemma
Belief that angels are ordered according to rank
in the 5th or 6th century in his book De Coelesti Hierarchia (On the Celestial Hierarchy). Dionysius described nine levels of spiritual beings which
Hierarchy_of_angels
Interpretations of the planets of the Solar System
is considered to form the first celestial sphere above Earth. Everything below the Moon is part of the sublunary sphere. Mercury moves the second fastest
Planets_in_astrology
CELESTIAL SPHERES
CELESTIAL SPHERES
Boy/Male
Indian, Sanskrit
Celestial
Girl/Female
French American Latin
Heavenly.
Boy/Male
Bengali, Christian, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Tamil, Telugu
Celestial
Girl/Female
Hindu, Indian, Kannada, Marathi, Sindhi, Tamil, Telugu
Celestial
Girl/Female
French American Latin
This French name is based on the Latin 'caelestis' meaning 'heavenly'. Used as both a masculine...
Boy/Male
French
This French name is based on the Latin caelestis meaning 'heavenly'. Used as both a masculine and...
Girl/Female
Spanish Latin French
Heavenly.
Girl/Female
Indian, Sanskrit
Celestial
Boy/Male
Gujarati, Hindu, Indian, Kannada
Celestial
Female
Italian
Feminine form of Italian/Spanish Celestino, CELESTINA means "heavenly."
Boy/Male
French
This French name is based on the Latin 'caelestis' meaning 'heavenly'. Five popes have been named...
Girl/Female
Tamil
Celestial
Girl/Female
Hindu
Celestial
Boy/Male
Indian, Sanskrit
Celestial
Boy/Male
Indian, Sanskrit
Celestial
Boy/Male
Tamil
Celestial
Male
Italian
Italian and Spanish form of Latin Cælestinus, CELESTINO means "heavenly."
Female
English
English form of French Célestine, CELESTINE means "heavenly."
Girl/Female
French Latin
Heavenly.
Girl/Female
Tamil
Celestial
CELESTIAL SPHERES
CELESTIAL SPHERES
Boy/Male
Hindu, Indian
One of Arjuna's Arrows
Boy/Male
Indian, Punjabi, Sikh
Full of God's Grace
Female
Egyptian
, the mother of the royal butler Aia.
Girl/Female
American, Arabic, British, Chinese, Christian, English, Greek, Hebrew, Indian, Jamaican
From Kay and Lee; Beloved; Variant of Kay and Kayla; Keeper of the Keys; Like God; Slender; Pasture
Boy/Male
Indian
Honor, Respect
Boy/Male
African, Australian, Chinese, Malawi
A Voice; Willow
Boy/Male
British, Christian, English
Month; Horse; Boundary
Boy/Male
Australian, Hindu, Indian
Limit; Sky
Girl/Female
Hindu
Long life
Girl/Female
Gujarati, Hindu, Indian
Who has Knowledge of All
CELESTIAL SPHERES
CELESTIAL SPHERES
CELESTIAL SPHERES
CELESTIAL SPHERES
CELESTIAL SPHERES
n.
A native of China.
n.
One of the orders of the celestial hierarchy.
adv.
In a celestial manner.
a.
Of or pertaining to the spiritual heaven; heavenly; divine.
n.
Alt. of Celestite
n.
A description of celestial phenomena, as rainbows, etc.
v. & a.
The orb of the fixed stars; the most rmote of the celestial spheres.
a.
Human; not celestial; not spiritual or divine.
a.
Of or pertaining to the heavens; celestial; astronomical.
n.
A chief angel; one high in the celestial hierarchy.
a.
Higher than celestial; superangelic.
n.
An imaginary circle or orbit in the heavens; one of the celestial spheres.
v. t.
To make like heaven.
n.
An elevation of mind to things celestial.
n.
Native strontium sulphate, a mineral so named from its occasional delicate blue color. It occurs crystallized, also in compact massive and fibrous forms.
v. t.
To make celestial.
n.
An inhabitant of heaven.
a.
Belonging to the aerial regions, or visible heavens.
a.
Pertaining to the firmament; celestial; being of the upper regions.
n.
Alt. of Celestinian