Hawking joins science and imagination to explore one of the most important mysteries facing humankind — the possibility of alien, intelligent life and the likelihood of future "contact." Traveling from the moons of Jupiter to a galaxy maybe not so far, far away, he'll introduce us to possible alien life forms — in stunning CGI — that face the same universal trials of adaptation and survival as the residents of Earth.

"Is Time Travel Possible?" Hawking explores the world's favorite scientific 'what if?' warping the very fabric of time and space as he goes. From killing your grandfather to riding a black hole, see how time travel may actually come true.

The world's most famous living scientist presents the wonders of the universe, revealing the splendor and majesty of the cosmos as never seen before. See how the universe began, how it creates stars, black holes and life -- and how everything will end.