According to general relativity, why does erarth orbit the sun?
A-matter contatins quarks and the earth and the sun attract each other with the color force between their quarks
B- Space around the sun is curved and the earth follows a geodesic in this curved space
C-the sun exerts a gravitational force on Earth across empty space
D- earth and the sun are continually exchanging photons of light in a way that holds earth in orbit
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