Season 1 (2014)
9.01 avg 13 episodes 9.1 → 9.4 43 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Standing Up in the Milky Way | 9.1 | 3,772 |
| 2 | Some of the Things That Molecules Do | 8.9 | 2,869 |
| 3 | When Knowledge Conquered Fear | 9.0 | 2,609 |
| 4 | A Sky Full of Ghosts | 9.1 | 2,472 |
| 5 | Hiding in the Light | 9.0 | 2,209 |
| 6 | Deeper, Deeper, Deeper Still | 8.7 | 1,981 |
| 7 | The Clean Room | 8.8 | 1,970 |
| 8 | Sisters of the Sun | 8.9 | 1,858 |
| 9 | The Lost Worlds of Planet Earth | 9.0 | 1,829 |
| 10 | The Electric Boy | 9.1 | 1,851 |
| 11 | The Immortals | 9.0 | 1,784 |
| 12 | The World Set Free | 9.1 | 1,697 |
| 13 | Unafraid of the Dark | 9.4 | 1,901 |
