Answers

2015-12-13T15:02:41+05:30
our earth is formed from the explosive gases in big bang theory when that big bang occured all rocks were explosed around sun so all continued moving due to sun's gravity and they got cooled down
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2015-12-13T15:05:11+05:30
If the Earth did not revolve around the sun, it would be pulled, by gravity, into the sun.  Objects manage to keep their distance from the Sun by moving forward at about the same speed they are falling into the sun. 
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