If the universe is expanding, then what is it expanding into, and what is it expanding from? Where's the edge of the universe ...

Mathematicians thought that they understood how rotation works, but now a new proof has revealed a surprising twist that ...

Physicists in Toronto observe quantum “negative time”: a pulse of light appears to leave before entering atoms.

NEW YORK — President Donald Trump was loudly booed at the men's final of the U.S. Open on Sunday, where extra security caused by his visit led to lines long enough that many people missed the start of ...