Might the mere fact of creating a time machine ensure its own elimination from history? That’s the disquieting suggestion of a new theoretical framework by Andrew Jackson, a research associate at the ...

Imagine a thread so thin it's invisible to the naked eye but packed with the mass of thousands of stars. This isn't science fiction—it's the theoretical description of cosmic strings, structures that ...

A trip through time has always sparked curiosity. The idea that you could step into a machine and emerge in the past or future has captured human imagination for generations. While science fiction ...

Time travel is one of the hallmarks of science fiction, but many time-travel-based movies have plots that leave one with a headache just thinking about them. What if you could travel into the past, ...