Episode Ratings Grid

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Great

Episode Power Rankings

The peaks and the valleys. Find the essential episodes — and the ones to skip.

#1
S1E3 8.8
The Story of Everything

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.

#2
S1E2 8.4
Time Travel

"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.

#3
S1E1 8.0
Aliens

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.

The Quality Arc

Each point is an episode, plotted in order. Colored bands mark season boundaries. Look for the rise, the plateau, or the decline.

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Episode Engagement

High votes + high rating = beloved classic. High votes + low rating = notorious stinker. Low votes + high rating = hidden gem.

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