澳门永利

澳门永利:Glow around black holes could light up dark energy

作者:冼忍增    发布时间:2019-03-14 03:01:01    

By Lisa Grossman DISCOVERING that the universe’s expansion is speeding up garnered three cosmologists a Nobel prize last week, even though the force apparently responsible – dark energy – remains deeply mysterious. Now there’s a way to measure this cosmic acceleration that should be able to probe a much earlier period in the universe’s history. This primordial era may be key to revealing what dark energy is. Cosmologists probe the early universe by looking at distant objects. Light speed is constant, so the further away something is,

 

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