Stephen Hawking challenges three ordinary people to determine if time travel is possible. The fascinating journey of discovery features DeLoreans, atomic clocks, a giant black hole and a large swath of New York City.

Professor Stephen Hawking challenges three ordinary people to work out the likelihood of alien life out there in the universe. See why the team has their minds blown in a way they were never expecting.

Stephen Hawking gives three ordinary people a truly mind-bending challenge: Can they work out why they exist at all? Hawking takes them down a rabbit hole of profound realizations, helping them think like philosophers as much as scientists.

Stephen Hawking challenges three ordinary people to work out where the universe came from. Hawking leads the trio on an extraordinary journey of discovery featuring racing cars, ice-skaters, balloons and running tracks.

Stephen Hawking challenges three ordinary people to find out what we really are. Self-assembling machines, light-up bacteria and the world's first physical demonstration of evolution in action conspire to revolutionize their view of life.