Science fiction is the perfect window into the possibilities and perils of time travel. What would happen if you went back in time and killed your own grandparent? If you knew how to stop a presidential assassination, would time travel allow you to make your wish come true? Can we use time travel as a tool to escape the destiny of our future or mistakes of the past? explores time travel through your favorite science-fiction franchises, from the classic time travel paradoxes of to the universe-crossing shenanigans of . Discover the real science behind questions such as: It's time to fire up the DeLorean to 88 mph, jump into the TARDIS hiding in plain sight, or warp space with the to explore what time travel means for us.