Time travel has shifted from pure fantasy to a serious, if highly constrained, topic in modern physics. The equations that describe gravity, quantum fields and the structure of spacetime now allow ...

Like stretch marks left on skin that expanded too quickly or cracks embedded in freezing ice, cosmic strings are artifacts of ...

The Lisska Center for Intellectual Engagement will host a roundtable discussion on time travel at 4:30 p.m. Nov. 5. The event, “Time Travel: Fact, Fiction, and Flux Capacitors,” will take place in the ...

Time travel isn't exclusively a feature of the sci-fi genre, and history's greatest non-sci-fi time travel film is a classic ...