query: Is there an absolute center of mass exist in the universe?
positive_passages.docid: 10362
positive_passages.text: Does the universe have a center?
negative_passages.docid: 36719
negative_passages.text: Gravitational time dilation at the earth's center
negative_passages.docid: 43505
negative_passages.text: Why is there no gravitational magnetic field? (Or, is there?)
negative_passages.docid: 35463
negative_passages.text: How come the universe is made of matter and not antimatter?
negative_passages.docid: 146976
negative_passages.text: Is the gravitational constant $G$ a fundamental universal constant?
negative_passages.docid: 144380
negative_passages.text: When the Center of Mass and Center of gravity does Not Coincide
negative_passages.docid: 92674
negative_passages.text: Could spontaneous symmetry breaking happen again in our universe?
negative_passages.docid: 67531
negative_passages.text: Universe being flat and why we can't see or access the space "behind" our universe plane?
negative_passages.docid: 85883
negative_passages.text: If there is no gravity, does that mean there's no mass as well?
negative_passages.docid: 89194
negative_passages.text: Potential at Center of Earth
negative_passages.docid: 153223
negative_passages.text: What's the exact gravitational force between spherically symmetric masses?
negative_passages.docid: 44342
negative_passages.text: Negative Mass and gravitation
negative_passages.docid: 90122
negative_passages.text: Is there experimental evidence that massless particles such as photons attract massive objects?
negative_passages.docid: 51901
negative_passages.text: Ambiguity in applying Newton's shell theorem in an infinite homogeneous universe
negative_passages.docid: 61618
negative_passages.text: Could the missing antimatter lie outside the observable universe?
negative_passages.docid: 50876
negative_passages.text: Is space expanding equally in every direction?
negative_passages.docid: 112264
negative_passages.text: Cosmological constant doubts