Search results
Results from the WOW.Com Content Network
This glossary of astronomy is a list of definitions of terms and concepts relevant to astronomy and cosmology, their sub-disciplines, and related fields. Astronomy is concerned with the study of celestial objects and phenomena that originate outside the atmosphere of Earth. The field of astronomy features an extensive vocabulary and a ...
The word is often used in reference to the Sun, Earth, and either the Moon or a planet, where the latter is in conjunction or opposition. Solar and lunar eclipses occur at times of syzygy, as do transits and occultations. The term is often applied when the Sun and Moon are in conjunction or in opposition . [4]
For instance, for a large portion of names ending in -s, the oblique stem and therefore the English adjective changes the -s to a -d, -t, or -r, as in Mars–Martian, Pallas–Palladian and Ceres–Cererian; [note 1] occasionally an -n has been lost historically from the nominative form, and reappears in the oblique and therefore in the English ...
"Astronomy" and "astrophysics" are synonyms. [ 3 ] [ 4 ] [ 5 ] Based on strict dictionary definitions, "astronomy" refers to "the study of objects and matter outside the Earth's atmosphere and of their physical and chemical properties", [ 6 ] while "astrophysics" refers to the branch of astronomy dealing with "the behavior, physical properties ...
The definitions were: A planet is any object in orbit around the Sun with a diameter greater than 2,000 km. (Eleven votes in favor) A planet is any object in orbit around the Sun whose shape is stable due to its own gravity. (Eight votes in favor) A planet is any object in orbit around the Sun that is dominant in its immediate neighbourhood.
The word derives from the Medieval Latin empyreus, an adaptation of the Ancient Greek empyros (ἔμπυρος), meaning "in or on the fire (pyr)". [ 1 ] In Christian religious cosmologies, the Empyrean was "the source of light" and where God and saved souls resided, [ 1 ] and in medieval Christianity, the Empyrean was the third heaven and ...
Get ready for fireworks! On Jan. 15, the sun will oppose Mars retrograde, triggering a cosmic standoff between your ego and your emotions. This is the kind of transit that could make you feel like ...
The sun then travels behind the firmament back to the other end of the Earth, from whence it could rise again. [46] In the Testament of Solomon, the heavens are conceived in a tripartite structure and demons are portrayed as being capable of flying up to and past the firmament in order to eavesdrop on the decisions of God. [47]