The ancients believed that the universe consisted of countless worlds we could not see, and argued endlessly over the nature of these distant, invisible planets and whether they might be inhabited. Until recently many scientists thought we would never discover the truth, believing that extra-solar planets were simply too far, too small and too dim to detect. But new technologies have suddenly revealed thousands of distant planets, opening up the most exciting period in astronomy in decades. Some believe we're on the verge of answering the ancient question: are we alone in the universe?
| Title | The Universe - Season 9 Episode 4 Alien Worlds |
|---|---|
| Year | 2015 |
| Genre | Documentary |
| Country | United States of America |
| Studio | History, H2 |
| Cast | David Ackroyd, Erik Thompson |
| Crew | |
| Alternative Titles | Vesmír, Unser Universum - Entdecke die Grenzen des Unbekannten, Unser Universum, El Universo, L'Univers et ses Mystères, The Universe - Our Solar System, 宇宙探秘 3D, La storia dell'universo, The Universe - Explore the Edges of the Unknown |
| Keyword | technology, space travel, galaxy, space, planet, astronaut, universe, cosmology, astronomy, solar system, cosmos, science and technology, science history, science fact, science mystery, science of the stars |
| First Air Date | May 29, 2007 |
| Last Air date | May 23, 2015 |
| Season | 9 Season |
| Episode | 88 Episode |
| Runtime | 45:14 minutes |
| Quality | HD |
| IMDb: | 7.90/ 10 by 168.00 users |
| Popularity | 21.586 |
| Language | English |
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