query: Accelerating beyond the speed of light?
positive_passages.docid: 420
positive_passages.text: Does the pilot of a rocket ship experience an asymptotic approach to the speed of light?
negative_passages.docid: 139098
negative_passages.text: Can the Flash run faster than light?
negative_passages.docid: 128965
negative_passages.text: Photon pair production at relativistic speeds?
negative_passages.docid: 102370
negative_passages.text: At what speed does our universe expand?
negative_passages.docid: 138834
negative_passages.text: A question about special relativity theory
negative_passages.docid: 8077
negative_passages.text: Photons in expanding space: how is energy conserved?
negative_passages.docid: 130813
negative_passages.text: Erik Lentz's faster-than-light soliton
negative_passages.docid: 72901
negative_passages.text: Can Special Relativity hold even without motion?
negative_passages.docid: 155345
negative_passages.text: Can we use curved spacetime to measure the one-way speed of light?
negative_passages.docid: 91385
negative_passages.text: Does quantum mechanics allow faster than light (FTL) travel?
negative_passages.docid: 2790
negative_passages.text: Can space expand with unlimited speed?
negative_passages.docid: 26363
negative_passages.text: How does faster than light travel violate causality?
negative_passages.docid: 15685
negative_passages.text: Does slowing light violate relativity?
negative_passages.docid: 2154
negative_passages.text: Why doesn't gravity speed up light?
negative_passages.docid: 128320
negative_passages.text: In superluminal phase velocities, what is it that is traveling faster than light?
negative_passages.docid: 47568
negative_passages.text: Is it experimentally proven that photons travel at speed $c$ in vacuum?
negative_passages.docid: 102908
negative_passages.text: Explaining to an 8-year-old why nothing can travel faster than light