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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 ...
Waxing is the process of hair removal from the root by using a covering of a sticky substance, such as wax, to adhere to body hair, and then removing this covering and pulling out the hair from the follicle.
The "old moon" is a waning sliver (which eventually becomes undetectable to the naked eye) until the moment it aligns with the Sun and begins to wax, at which point it becomes new again. [4] Half moon is often used to mean the first- and third-quarter moons, while the term quarter refers to the extent of the Moon's cycle around the Earth, not ...
A pakṣa (Sanskrit: पक्ष) is the time taken by the Moon to move from a new moon to a full moon and vice versa. The waxing phase of the moon is known as the bright side (Sanskrit: शुक्ल पक्ष, romanized: śukla pakṣa) and the waning phase is known as the dark side (Sanskrit: कृष्ण पक्ष, romanized: kṛṣṇa pakṣa).
The Lunation Number or Lunation Cycle is a number given to each lunation beginning from a specific one in history. Several conventions are in use. The most commonly used was the Brown Lunation Number (BLN), which defines "lunation 1" as beginning at the first new moon of 1923, the year when Ernest William Brown's lunar theory was introduced in the American Ephemeris and Nautical Almanac.
The name of the center changed to the Kopernik Observatory and Science Education Center and it needed to generate about $54,000 each year from federal / state grants, fund-raisers, and company / public donations. Under the transfer agreement Kopernik had to balance its operating budget through 2011, otherwise Roberson could resume control of ...
In astronomy, coordinate systems are used for specifying positions of celestial objects (satellites, planets, stars, galaxies, etc.) relative to a given reference frame, based on physical reference points available to a situated observer (e.g. the true horizon and north to an observer on Earth's surface). [1]
NSSDC – (organization) National Space Science Data Center; NSV – (catalog) New Suspected Variable, a catalog of variable stars; NT – (astrophysics terminology) Non-Thermal, radiation that is not related to the emission source's temperature (such as synchrotron radiation)