The world’s best clocks may be sensitive to an odd mix of quantum and relativistic effects that would stretch time and test the boundaries of physics ...

Marty McFly went Back to the Future but what do scientists think about time travel in the real world? Is it possible? And ...

Psychologists say “time expansion” is real—moments when your brain slows reality, stretching seconds into minutes during ...

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Black holes are so strange that physicists have long wondered if they are quite what they seem. Now we are set to find out if they are instead gravastars, fuzzballs or something else entirely ...