Black hole and Big Bang singularities break our best theory of gravity. A trilogy of theorems hints that physicists must go ...

Who's up for a Florida launch? Weather permitting, a SpaceX rocket could be seen in Cocoa Beach, Merritt Island, Melbourne, ...

A curious question sparked a cosmic deep dive into why light never tires—even after 25 million years on the move.

Researchers have found that the supermassive black hole in the center of our Milky Way galaxy, known as Sagittarius A*, is spinning so rapidly that it is altering the fabric of space-time around it.

There were a lot of reasons to expect the subjects’ performance to suffer as a result of their time in space. Among the psychological and emotional factors Dev and her colleagues considered were ...