Release Message:  Join Stephen Hawking as he 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.

Description:  Join Stephen Hawking as he 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.