Is time travel possible? What would happen if you did it? How would you do it? The answers to these questions are surprisingly complicated and weird.

Quantum time travel experiments hint that physics creates closed time loops, meaning you can't change history.

If we ever ended up in the past, it's tempting to think our modern skills would make us rich and famous. But putting those skills to use centuries ago is trickier than it sounds...

If time travel is possible, what direction would be the easiest to visit and have the fewest limitations?

Time machines may be possible, but the laws of physics will impose limits on what they'll be able to do.