Vanderbilt University physicist Lorenzo Gavassino isn't so sure this is as big an obstacle as time-traveler pessimists have ...

When it comes to sending humans back to the moon, knowing how to work with the regolith that coats the ground will be make-or ...

It’s not every day that a well-known author writes a physics paper. But George R R Martin, who is best known for his Song of ...

The grandfather paradox is just one of the thorny logical problems that arise with the concept of time travel. But one ...

We like to believe we have a pretty good idea of how things work in our universe. However, the truth is that there is still much we don't know. Physicists have spent decades creating complex theories ...