How the Universe Works Episode Ratings Heatmap
2010 · 11 Seasons · 93 Episodes · Overall Score: 8.2/10 (36 rated)
Season 6 holds the highest collective average score across the series.
Season 6 Details →Lowest score variance (σ = 0.25), maintaining an average of 8.1.
Complete Episode Rating Matrix
Interactive score chart by season and episode number. Darker green indicates higher ratings; amber and red denote lower reception.
| Episode | Season 1 | Season 2 | Season 3 | Season 4 | Season 5 | Season 6 | Season 7 | Season 8 | Season 9 | Season 10 | Season 11 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Ep 1 | 7.7 | 7.2 | 8.0 | – | – | – | – | – | – | – | – |
| Ep 2 | 7.8 | 7.2 | 8.0 | 8.0 | 8.0 | – | – | – | – | – | – |
| Ep 3 | 7.8 | 8.0 | 8.0 | – | – | – | 9.0 | – | – | – | – |
| Ep 4 | 7.8 | 7.7 | 8.5 | 9.0 | 8.5 | – | 8.0 | – | – | – | – |
| Ep 5 | 8.0 | 9.0 | 10.0 | – | 8.0 | 9.0 | 9.0 | – | – | – | – |
| Ep 6 | 7.6 | 8.0 | 10.0 | – | 8.0 | – | – | – | – | – | – |
| Ep 7 | 7.0 | 9.5 | – | – | – | – | 9.0 | 9.0 | – | – | – |
| Ep 8 | 7.7 | 7.0 | – | – | – | – | – | – | – | – | – |
| Ep 9 | – | – | 8.0 | – | – | – | – | – | – | – | – |
| Ep 10 | – | – | – | – | – | – | – | – | – | – | – |
| Ep 11 | – | – | – | – | – | – | – | – | 7.0 | – | – |
| Season Avg | 7.7 | 8.0 | 8.6 | 8.5 | 8.1 | 9.0 | 8.8 | 9.0 | 7.0 | – | – |
Ratings Analysis & Trajectory
Across 11 seasons and 93 episodes, How the Universe Works has earned an overall series rating of 8.2 out of 10. The series reached its critical peak early, showing a slight contraction in audience satisfaction in later chapters.
The single highest-rated hour of television in the series is Season 3, Episode 5 ("Is Saturn Alive?"), rated at an extraordinary 10.0/10 with 1 ratings. Conversely, the lowest-rated installment is Season 9, Episode 11 ("Mystery of Alien Worlds"), landing at 7.0/10.
The most precipitous single-episode shift occurred in Season 2 between Episode 7 ("Asteroids - Worlds That Never Were", 9.5) and Episode 8 ("Birth of the Earth", 7), a swing of 2.5 points.
Top 10 Highest Rated Episodes of How the Universe Works
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 3, Ep 5 | Is Saturn Alive? | 10.0 | 1 | Aug 6, 2014 |
| #2 | Season 3, Ep 6 | Weapons of Mass Extinction | 10.0 | 1 | Aug 13, 2014 |
| #3 | Season 2, Ep 7 | Asteroids - Worlds That Never Were | 9.5 | 2 | Aug 22, 2012 |
| #4 | Season 2, Ep 5 | Extreme Orbits - Clockwork and Creation | 9.0 | 2 | Aug 8, 2012 |
| #5 | Season 4, Ep 4 | Edge of the Solar System | 9.0 | 1 | Aug 4, 2015 |
| #6 | Season 6, Ep 5 | Uranus & Neptune: Rise of the Ice Giants | 9.0 | 1 | Feb 6, 2018 |
| #7 | Season 7, Ep 3 | The Interstellar Mysteries | 9.0 | 1 | Jan 22, 2019 |
| #8 | Season 7, Ep 5 | Secret World of Nebulas | 9.0 | 1 | Feb 5, 2019 |
| #9 | Season 7, Ep 7 | Battle of the Dark Universe | 9.0 | 1 | Feb 19, 2019 |
| #10 | Season 8, Ep 7 | Edge of the Universe | 9.0 | 1 | Feb 13, 2020 |