I believe that all motion is relative and that the frame of reference changes depending on whose perspective one chooses to use. In the reading, "Newton's Bucket" the Scientists monitoring the motion of water spinning within a bucket, disagreed on the existence of relative motion or whether there is absolute space. I agree with aspects of Einstein's theory of relativity but I understand that depending on location the perspective can be very different. For instance, the perspective of someone on earth, affected by gravity is very different than someone on the moon following the same objects.