1. According to Einstein's theory of general Relativity, The Earth orbits around the sun.
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3. a) The gravitational force emanating from the Sun causes the Earth to accelerate away from a straight line path and curve towards the Sun
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5. b) The structure of space-time in the region of the Earth has been altered by the presence of the Sun in such a way that its orbit, although curved, is the shortest path in space-time.
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7. c) The particles having mass in the Sun give off gravitons which interact with the particles having mass in the Earth causing changes in the motion of the Earth which cause it to follow its elliptical orbit

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b The structure of spacetime in the region of the Earth has been altered ... View the full answer