Time travel has shifted from pure fantasy to a serious, if highly constrained, topic in modern physics. The equations that ...

Time feels like the most familiar thing in the world, yet it hides one of physics’ hardest questions: why do we only remember ...

Hawking once said, "I have experimental evidence that time travel is not possible," and recounted his unusual test — which involved throwing a party on Jun 28, 2009. But Hawking didn't send out ...

Most people see time as a one-directional arrow in the universe's symphony. But the world of theoretical quantum physicists is one in which the direction of time is far more flexible. These experts ...

In a makeshift lab, a trio of brainiac students argue over their time-travel device. The skeptic on the team has her doubts—not that the invention will work, but whether they should be mucking around ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American It’s northern summer time, and thoughts drift ...