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Astronomy Vocabulary

Science Astronomy Vocabulary Terms

astronomy the study of objects and matter outside the earth's atmosphere and of their physical and chemical properties
telescope a device shaped like a long tube that you look through in order to see things that are far away
rotation the action or process of rotating on or as if on an axis or center, one complete turn
tide the regular upward and downward movement of the level of the ocean that is caused by the pull of the Sun and the Moon on the Earth
orbit a path described by one body in its revolution about another (as by the earth about the sun
satellite an object (such as a moon) that moves around a much larger planet
latitude distance north or south of the equator measured in degrees up to 90 degrees
crater a large round hole in the ground made by the explosion of a bomb or by something falling from the sky
revolution the action of moving around something in a path that is similar to a circle
heliocentric having or relating to the sun as the center
solstice one of the two times during the year when the sun is farthest north or south of the equator
ellipse a shape that resembles a flattened circle: oval
equinox a day when day and night are the same length
Core the inner most part of something
photsphere the visible surface of the Sun/ the depth of a star's outer shell from which light is radiated
phase the shape of the part of the moon that is visible at different times during a month
lunar eclipse an occasion when the moon looks like it is completely or partially covered with a dark circle because the Earth's shadow is on it
chromosphere the second layer of the three main layers in the Sun's atmosphere
gas giants also known as the Jovian or Outer; the planets whose compositions are mostly gases, such as hydrogen, and small amounts of rocky material (mostly at their cores)
axis the imaginary straight line in which an object (such as Earth) turns around
corona a bright circle seen around the sun or the moon
solar eclipse an occasion when the sun looks like it is completely or partially covered with a dark circle because the moon is between the sun and the Earth
gravity the natural force that tends to cause physical things to move towards each other /the force that causes things to fall towards the Earth
greenhouse effect the warming of the Earth's atmosphere that is caused by air pollution. The greenhouse effect occurs when warmth from the sun is trapped in the Earth's atmosphere by a layer of gases (such as carbon dioxide) and water vapor.
comet an object in outer space that develops a long, bright tail when it passes near the sun
terrestrial planets the terrestrial planets are the inner planets closest to the Sun
asteroid any one of thousands of small planets that circle around the sun
asteroid belt the region of the Solar System located roughly between the orbits of the planets Mars and Jupiter. It is occupied by numerous irregularly shaped asteroids
meteor a piece of rock or metal that burns and glows brightly in the sky as it falls from outer space into the Earth's atmosphere
meteorite a piece of rock or metal that has fallen to the ground from outer space: a meteor that reaches the surface of the Earth without burning up entirely
meteroid a piece of stone-like or metal-like debris which travels in outer space
sunspot temporary phenomena on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions.
prominences a large, bright, gaseous feature extending outward from the Sun's surface, often in a loop shape.
solar flare a sudden flash of brightness observed over the Sun's surface
Created by: sfarwell