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The branch of astronomy that employs principles of physics and chemistry to determine the nature of astronomical objects and phenomena, examining properties such as luminosity, density, temperature, and chemical composition (rather than the positions or motions of objects in space, which is more specifically the emphasis of celestial mechanics).
Astronomical events are celestial body events such as eclipses, novae or planetary collisions studied by the scientific discipline of astronomy, whereas "astronomy events" refers to social events such as academic meetings, conferences and other such newsworthy occasions relating to astronomy.
Greek astronomy is characterized from the start by seeking a rational, physical explanation for celestial phenomena. [17] In the 3rd century BC, Aristarchus of Samos estimated the size and distance of the Moon and Sun, and he proposed a model of the Solar System where the Earth and planets rotated around the Sun, now called the heliocentric ...
Phenomena associated with stars and space. For those phenomena specifically associated with the Earth's Sun, see Category:Solar phenomena. Subcategories.
The celestial phenomenon is one that unites us as we stop to gaze in awe while the central force of our solar system dances out of view and the moon seemingly takes a bite out of our star.
An aurora is a natural phenomenon. A natural phenomenon is an observable event which is not man-made. Examples include: sunrise , weather , fog , thunder , tornadoes ; biological processes , decomposition , germination ; physical processes , wave propagation , erosion ; tidal flow , and natural disasters such as electromagnetic pulses ...
ZAHB – (celestial object) "zero-age" horizontal branch, horizontal branch stars that have just begun burning helium in their cores and hydrogen in a shell around the cores; ZAMS – (celestial object) zero age main sequence, a star that has just become a main-sequence star (i.e. a star that has begun burning hydrogen in its core)
(No negative connotation there.) Plus, names that refer to the celestial are especially fitting since, much like the sky, the birth of a baby is an event that inspires a deep sense of wonder ...