Scientists prove cosmological speed limit, time travel moves a little further out of reach
In this article: cosmological speed limit, CosmologicalSpeedLimit, Du Shengwang, DuShengwang, einstein, general relativity, GeneralRelativity, hong kong university of science and technology, HongKongUniversityOfScienceAndTechnology, photon, photons, science, special relativity, SpecialRelativity, speed of light, SpeedOfLight, time travel, TimeTravel
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