9.32 avg 6 episodes 9.8 → 8.8 30 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 3 | Stunning Saturn | 9.8 | 9 |
| 4 | Time Lord | 8.5 | 10 |
| 5 | 50th Anniversary Celebration | 9.8 | 9 |
| 13 | Sputnik's Children | 9.7 | 10 |
| 14 | Last Man on the Moon | 9.3 | 11 |
| 15 | A Journey Through Space and Time | 8.8 | 8 |
7.70 avg 4 episodes 8.6 → 7.4 30 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | Beyond Pluto | 8.6 | 7 |
| 2 | Cosmology in Crisis? | 7.2 | 8 |
| 4 | Marsquake! | 7.6 | 7 |
| 8 | Space Mission Special | 7.4 | 7 |
7.97 avg 6 episodes 7.8 → 6.8 30 min avg
| # | Title | Rating | Votes |
|---|---|---|---|
| 1 | The Search for Alien Life | 7.8 | 6 |
| 3 | The UK Space Race | 8.6 | 6 |
| 4 | Is There Anybody out There? | 8.6 | 6 |
| 5 | Black Holes: Searching for the Unknown | 8.0 | 8 |
| 6 | The Very Large Telescope | 8.0 | 7 |
| 7 | Question Time Special | 6.8 | 6 |
