KANSAS CITY, Mo. -- It was a day that began at a desk, on an elevator, washing the windows. Ordinary. It is appropriate, then, that the most powerful pieces of the Smithsonian Institution's traveling ...

WASHINGTON (Reuters) - A Pentagon report on unidentified flying objects said U.S. government investigations since the end of World War Two have found no evidence of extraterrestrial technology and had ...

Primordial black holes are ancient mysteries, born in the universe’s earliest seconds. Unlike regular black holes, they weren’t formed by collapsing stars. Instead, they emerged when extremely dense ...

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