Time travel is deterministic and locally free, a paper says —resolving an age-old paradox. This follows research observing ...

Time is one of the most intriguing concepts in physics, and yet, it's something that we often take for granted. But what if the way we experience time moving only forward defies the very laws of ...

In a peer-reviewed journal article, University of Queensland physicists say time is essentially self-healing. Changes in the past wouldn't necessarily cause a universe-ending paradox. Phew.

But, of course, before we can even worry about paradox-free time travel, we have to figure out time travel at its core. Something MIT scientists may be close to doing in their search for dark matter .

Of course, the paradox doesn’t apply just to instances of grand-patricide, but to all hypothetical situations where a time traveler goes back to prevent something from occurring. If they’re successful ...

The rules of time-travel have been debated by scientists and sci-fi fans alike for years, but now a student physicist has been able to "square the numbers" to show how paradox-free time travel is ...

Surprisingly, by focusing on the time it takes light to travel between the two, the paradox can be explained. Both the traveler and homebody set their clocks at zero when the traveler leaves Earth ...