Episode Ratings Grid

M
Loading chart...
Great

Episode Power Rankings

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

#1
S1E5 8.3
Aliens

Professor Brian Cox visits some of the most stunning locations on earth to describe how the laws of nature have carved natural wonders across the solar system.

#2
S1E3 8.2
The Thin Blue Line

Brian reveals how something as flimsy as an atmosphere can create some of the most wondrous sights in the solar system. He takes a ride to the top of earth's atmosphere, and in the Namib desert, he tells how Mercury lost its atmosphere.

#3
S1E1 8.1
Empire of the Sun

Physicist Brian Cox examines the sun's rule over our planet, heading for India to witness a total solar eclipse, and viewing the Northern Lights in the Arctic Circle.

#4 Order Out of Chaos S1E2 8.1
#5 Dead or Alive S1E4 8.0

Lowlights

#5 S1E4 Dead or Alive 8.0

The worlds that surround our planet are all made of rock, but there the similarity ends. Some have a beating geological heart, others are frozen in time. Brian travels to the tallest mountain on earth, the volcano Mauna Kea on Hawaii, to show how something as basic as a planet's size can make the difference between life and death. Even on the summit of this volcano, Brian would stand in the shade of the tallest mountain in the solar system, an extinct volcano on Mars called Olympus Mons, which rises up 27 km.

#4 Order Out of Chaos S1E2 8.1
#3 Empire of the Sun S1E1 8.1
#2 The Thin Blue Line S1E3 8.2
#1 Aliens S1E5 8.3

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.

Loading chart...

Episode Engagement

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

Loading chart...