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8 Unit Voc Review 1

Unit Vocab Review 1 - Hillery West

aberration an undesirable effect caused by a defect, such as color or twisting of an image by the lens of a telescope
apparent observed and noted without taking into consideration factors that may not be known; what is seen
celestial of the heavens
cluster a group of constellations; in astronomy , a related group of galaxies with a common gravitational pull
constellation an apparent group of stars which seem to form a pattern and are given a name
deterioration the state of becoming worse over time
disintegrating coming to pieces
distortion an apparent warping or twisting, as of an image changed by an imperfection in a lens
galaxy a group of stars held together by gravity, forming a distinct unit
Irregular not having a regular form
luminosity the amount of energy being given off by an object
magnitude the actual brightness of a celestial object, such as a star
nebula a cloud of dust and gas in space
optical having to do with visible light and its study
parabolic having to do with a special curve, which is described as the intersection of a plane with a cone
parallax the apparent shift in an objects location based upon changes in one's position
spherical having a round shape, such as the cross section of a sphere
asteroid a rock that orbits the sun
chromosphere the middle layer of the sun's atmosphere, considered to be the sun's surface
comet an icy, gaseous object that orbits the sun
corona the outermost layer of the sun's atmosphere, consisting of light gases
eclipse the hiding of a heavenly body by another
fusion a nuclear process in which light atoms combine to form heavier atoms, giving of energy
nucleus the center of an object, especially an atom or an astronomical bocy
optimum the very best possible; that which provides the greatest opportunity for success
photosphere the innermost layer of the sun's atmosphere, which lies next to the core
portend to indicate, as predictive of a future (usually undesirable) event
probe a spacecraft designed to explore a region or object in space and send back regular reports
prominence a tall stream of gas and flame that shoots out from the chromosphere of the sun
aphelion the point at which an astronomical
eclipse the hiding of an astronomical object by another
ellipse an oblong spheroid such as a flattened oval
equinox either of two times when the sun's rays strike the earth at the equator
lunar having to do with the moon
maria seas on the moon or Mars; the plural of mare
penumbre an area of light shadow
perihelion the point at which an astronomical object is at its closest point to the object it rotates around
phase a form of the moon based on the way the light of the sun which strikes it is observed from earth
satellite an object which orbits another
solstice either of two points when the sun's rays strike the earth farthest from the equator
subsequent something which follows another in time
tide the rise and fall of the ocean based upon the pull of the sun or moon
umbra an area of dark shadow
Created by: Hillerywest