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Strange radio signal at Milky Way’s heart could challenge Einstein’s relativity

At the center of the Milky Way, close to the pull of a supermassive black hole, astronomers have found a strange new radio signal that behaves like a slow, steady clock. This object is more than an ...

Obama clarifies alien comments after telling podcast 'they’re real'

Former U.S. President Barack Obama has clarified comments he made about alien life on a podcast over the weekend ...