query: Was Einstein wrong when he said nothing can go faster than the speed of light?
positive_passages.docid: 5930
positive_passages.text: Why is the observable universe so big?
negative_passages.docid: 158250
negative_passages.text: According to special relativity, has the future already happened?
negative_passages.docid: 14922
negative_passages.text: Do tachyons move faster than light?
negative_passages.docid: 29290
negative_passages.text: Why is there a controversy on whether mass increases with speed?
negative_passages.docid: 47988
negative_passages.text: Reflection At Speed of Light
negative_passages.docid: 50289
negative_passages.text: The vacuum light speed: Is it really constant, i.e., independent of location in space-time?
negative_passages.docid: 81880
negative_passages.text: How can a photon have no mass and still travel at the speed of light?
negative_passages.docid: 10781
negative_passages.text: Accelerating particles to speeds infinitesimally close to the speed of light?
negative_passages.docid: 91265
negative_passages.text: Has the speed of light changed over time?
negative_passages.docid: 2154
negative_passages.text: Why doesn't gravity speed up light?
negative_passages.docid: 16748
negative_passages.text: What happens if light/particles exceeded the speed of light for a particular medium?
negative_passages.docid: 28488
negative_passages.text: I am confused about the idea that the speed of light is independent of the speed of the source of light
negative_passages.docid: 2790
negative_passages.text: Can space expand with unlimited speed?
negative_passages.docid: 42816
negative_passages.text: Does entanglement have a speed or is it instantaneous
negative_passages.docid: 116728
negative_passages.text: Why does speed of light have to be constant?
negative_passages.docid: 77372
negative_passages.text: "Speed" of Gravity and Speed of Light
negative_passages.docid: 142906
negative_passages.text: How can a particle in a medium ever travel faster than light?