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21 Cards in this Set
- Front
- Back
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The study of the stars planets and all other heavenly bodies
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Astronomy
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Scientist Who study outerspace
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Astronomers
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An area containing no air or any other matter
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Vacuum
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The force that resists motion
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Friction
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A star system containing millions to billions of stars
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Galaxy
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The bearred spiral galaxy and in which we live in
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Milky Way
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A cluster of about 40 galaxies including the Milky Way
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Local group
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A spiral galaxy in which the spiral arms are attached to a straight bar that runs through the center of the galaxy
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Barred spiral
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A large cloud of gas and dust in space
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Nebulae
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The stars outlining an imaginary picture in the sky
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Constellation
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An imaginary line around which the earth rotates that stretches from pole to pole through the interior of the earth
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Axis of rotation
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Intermost region of the earth Central hottest region of the sun
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Core
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The suns visible surface sphere of light
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Photosphere
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A Patch of gas on the sun surface that is cooler than the rest of the sun and therefore rotates bright
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Sunspots
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An Event that occurs when the earths moon passes between the sun and the earth temporarily blocking the sun's rays from a portion of the earth
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Solar eclipse
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The part of the sun's atmosphere closest to the sun's surface spear of cool
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Chromosphere
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A haze of very hot grasses that extends hundreds of thousands of miles from the surface of the sun the hottest region of the sun's atmosphere
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Corona
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A stream potentially harmful particles that flows constantly from the surface of the sun formed by particles of gas escaping int space at high-speed
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Solar wind
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The distance light travels in one year a unit for measuring distances in space equal to about 5.9 trillion miles
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Light year
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An occurance when a star suddenly flayers up to many times it's original brightness
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Nova
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The violent explosion of the sun
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Super nova
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