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last earth science test of the year(27 questions on test)
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what is Kepler's second law of motion?
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relates the speed of a planet throughout its orbit over equal amounts of time
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Terms in this set (23)
what is Kepler's second law of motion?
relates the speed of a planet throughout its orbit over equal amounts of time
how many degrees Celsius does the core of a star have to reach to began hydrogen fusion?
10,000,000 degrees celsius
what kind of galaxy is the milky way?
barred spiral
The knowledge we have of stars comes from what?
radiaton
why is there a minimum mass for a object to become a star?
Stars wouldn't have enough pressure to start hydrogen fusion