The chemistry of stars and interstellar space.
(Countable) A particular discipline or branch of learning, especially one dealing with measurable or systematic principles rather than intuition or natural ability. [from 14th c.]
The branch of astronomy dealing with the moon in general
The definition of astrophysics is a branch of astronomy that studies the composition and origin of objects in outer space along with the way they interact with each other and other matter.
The study of spectra, especially experimental observation of optical spectra or mass spectra, to determine the properties of their source.
The horizontal angular distance from a reference direction, usually the northern point of the horizon, to the point where a vertical circle through a celestial body intersects the horizon, usually measured clockwise. Sometimes the southern point is used as the reference direction, and the measurement is made clockwise through 360°.
(Mathematics) Based on the number 2 or the binary number system.
Any of several celestial objects emitting periodic, short, intense bursts of radio, x-ray, or visible electromagnetic radiation, generally believed to be quickly rotating neutron stars.
The branch of astronomy dealing with the description of the heavens and the mapping of the stars
A map or chart prepared from this data
A philosophical, religious, or mythical explanation of the nature and structure of the universe.
A mechanical apparatus consisting of balls of various sizes arranged as on wires, designed to illustrate the relative motions and positions of the sun, earth, moon, and often other planets
A faintly colored luminous ring appearing to surround a celestial body (such as the Moon or Sun) that is visible through a haze or thin cloud, caused by diffraction of light from suspended matter in the intervening medium.
Either of the two points in the orbit of the Moon when it lies in a straight line with the Sun and Earth. A new moon syzygy occurs when the Moon is between the Sun and the Earth; a full moon syzygy occurs when the Earth is between the Moon and the Sun.
Scientists believe that asteroids may be the remains of the formation of the solar system - the Big Bang explosion. The material that was not pulled into one of the planets remained in space and began its own cooling process. The material that did not get pulled into a planetary gravitational field continues to grow as an asteroid.
An imaginary sphere of infinite extent with the earth at its center and on which the stars, planets, and other heavenly bodies appear to be located.
(Gram.) An uninflected word used to connect words, phrases, clauses, or sentences; connective: conjunctions may be coordinating (Ex.: and, but, or), subordinating (Ex.: if, when, as, because, though), or correlative (Ex.: either . . . or, both . . . and)
(Archaic) The act or state of bending downward; inclination.
The plane of the earth's orbit extended infinitely
Either of the two points on the celestial sphere where the ecliptic (the apparent path of the Sun) crosses the celestial equator . &diamf3; The point at which the Sun's path crosses the celestial equator moving from south to north is called the vernal equinox . The vernal equinox marks the zero point in both the equatorial and ecliptic coordinate systems; horizontal angular distances (right ascension in the equatorial system and celestial longitude in the ecliptic system) are measured eastward from this point. The vernal equinox is also known as the first point of Aries because when first devised some 2,000 years ago this point occurred at the beginning of Aries in the zodiac. Because of the westward precession of the equinoxes, the vernal equinox is now located at the beginning of Pisces. &diamf3; The point at which the Sun's path crosses the celestial equator moving from north to south is called the autumnal equinox .
(Mathematics) A number assigned to a quantity so that it may be compared with other quantities.
A meteor that reaches the Earth's surface because it has not been burned up by friction with the atmosphere. Meteorites are believed to be fragments of comets and asteroids. &diamf3; Meteorites that consist mostly of silicates are called stony meteorites and are classified as either chondrites or achondrites. &diamf3; Meteorites that consist mostly of iron are called iron meteorites. &diamf3; Meteorites that consist of a mixture of silicates and iron are called stony-iron meteorites.
(Beekeeping, archaic) An empty box added beneath a full one in a beehive to give the colony more room to expand or store honey.
(Botany) A slight curving or circular movement in a stem, as of a twining plant, caused by variation in growth rates of different parts.
The point at which an orbiting object, such as a planet or a comet, is closest to the Sun.
Any of a number of starlike celestial objects that emit immense amounts of light and, often, radio waves, characterized by having spectral lines with very large redshifts: quasars are thought to be the most distant and oldest observable objects in the universe
An increase in the wavelength of radiation emitted by a celestial body as a consequence of the Doppler effect.
Either of the two points on the celestial sphere where the ecliptic (the apparent path of the Sun) reaches its greatest distance north or south of the celestial equator . &diamf3; The northernmost point of the Sun's path, called the summer solstice , lies on the Tropic of Cancer at 23°27' north latitude. &diamf3; The southernmost point of the Sun's path, called the winter solstice , lies on the Tropic of Capricorn at 23°27' south latitude.
The point directly overhead in the sky or on the celestial sphere
A defect of focus, such as blurring in an image.
The point at which an orbiting body, such as a planet or comet, is farthest away from the Sun.
(Mineralogy) Any of several impure mixtures of uranium oxides
The geology of celestial bodies.
Find another word for astronomy. In this page you can discover 61 synonyms, antonyms, idiomatic expressions, and related words for astronomy, like: stargazing, earth-space science, uranology, astrophotography, astrochemistry, science, selenology, astrophysics, spectroscopy, azimuth and binary.