Discussion on 'Halimbawa ng textong expositori narativ?'

(1) On August 18, 2009 at 12:47 am Damraiden [0] said:

In astronomy, Kepler's three laws of planetary motion are:

"The orbit of every planet is an ellipse with the sun at a focus."

"A line joining a planet and the sun sweeps out equal areas during equal intervals of time."[1]

"The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit."

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