vocab
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| elliptical A | shaped like a flattened circle
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| geocentric B | having or representing the earth as the center, as in former astronomical systems.
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| gravitational force C | the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface
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| Heliocentric D | having or representing the sun as the center, as in the accepted astronomical model of the solar system.
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| moon E | the natural satellite of the earth, visible (chiefly at night) by reflected light from the sun.
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| orbit F | the curved path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution.
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| Planet G | a celestial body moving in an elliptical orbit around a star.
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| solar system H | the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
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| Parallax | an apparent shift in the position of an object when viewed from different locations
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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