Add Yahoo as a preferred source to see more of our stories on Google. Physicists derived an exact limit on how much information a noisy channel could send backward through time. (CREDIT: AI-generated ...

Here’s what you’ll learn when you read this story: Inspired by the movie Interstellar, a team of researchers figured out—at least hypothetically—how to send messages to the past. The researchers ...

A message from the future sounds like science fiction, until someone starts asking how many bits it could actually carry. That is the question three physicists have now answered, using a setup ...