This is called the arrow paradox, and it's another of Zeno's arguments against motion. The issue here is that in a single instant of time, zero seconds pass, and so zero motion happens.

One of the most famous paradoxes ever, the grandfather paradox, cautions against making changes that could break the timeline if you were to ever travel back in time. But, according to one scientist, ...

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

We're waking up and repeating the day with these Groundhog Day style time paradox RPGs, board, and card games.

Einstein’s general relativity predicts the existence of closed timelike curves—space-time loops allowing theoretical travel back to past events. In a rotating universe, space-time could warp ...