Is the earth flat?
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Aug4-06, 05:47 PM
An orbiting body is following its inertial path which might otherwise be a straight line, but due to the curvature of spacetime caused by a nearby massive object, that straight line appears curved, as if the orbiting body were traveling around the edge of a depression. So the moon is traveling in a straight line (its inertial tendency), but because it is near the earth, a massive gravitational object, it APPEARS to be traveling a curved path. Am i correct so far?
No in GR theory this is not the case!
An orbiting body is traveling on a geodesic but a geodesic is not necessarily a straight line!
See for a detailed discussion on this subject see the last few pages of:
Real frame (strong issue)