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20 Cards in this Set
- Front
- Back
Orbit
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the path a planet travels around the sun.
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electromagnetic spectrum
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the range of wavelengths or frequencies
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solar system
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the collection of nine planets and their moons in orbit around the sun
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observatory
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A building, place, or institution designed and equipped for making observations of astronomical, meteorological, or other natural phenomena
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full moon
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The moon when it is visible as a fully illuminated disk.
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space probe
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A spacecraft carrying instruments intended for use in exploration of the physical properties of outer space or celestial bodies other than Earth.
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Mercury
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is the closest planet to the sun. it atmosphere is made up of helium and hydrogen. Mercury is very hot it can be around 465˚C
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radio telescope
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A device used in radio astronomy for detecting and recording radio waves coming from stars and other celestial objects
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meteor
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A bright trail or streak that appears in the sky when a meteoroid is heated to incandescence by friction with the earth's atmosphere.
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meteorite
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A stony or metallic mass of matter that has fallen to the earth's surface from outer space.
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comet
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A celestial body, observed only in that part of its orbit that is relatively close to the sun
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asteroid
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Any of numerous small celestial bodies that revolve around the sun
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new moon
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The phase of the moon occurring when it passes between the earth and the sun and is invisible or visible only as a narrow crescent at sunset.
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solar eclipse
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an eclipse in which the sun is obscured by the moon.
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lunar eclipse
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an eclipse in which the moon appears darkened as it passes into the earth's shadow.
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eclipse
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an obscuring of the light from one celestial body by the passage of another between it and the observer or between it and its source of illumination
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sphere
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A three-dimensional surface, all points of which are equidistant from a fixed point
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axis
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A straight line about which a body or geometric object rotates or may be conceived to rotate
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rotation
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The act or process of turning around a center or an axis:the axial rotation of the earth
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revolution
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Orbital motion about a point, especially as distinguished from axial rotation
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