What is the universe's end date? We don't know exactly, but experts now say it could be sooner than previously expected.

Dark matter, though invisible, weighs heavily on how we understand the universe. Its gravity sculpts galaxies, holds clusters ...

A new study, however, identifies a possible candidate. A separate team of astronomers compared 1983 data from the Infrared ...

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The president’s proposed budget includes major cuts to NASA — among them, the elimination of funding for the Nancy Grace ...