Season 4
20168 EpisodesDocumentary, Talk, Mystery
Episode Guide
Astronomers detect compelling evidence of incredible alien technology orbiting a distant star. The earliest images of Pluto may reveal a moving object crossing its surface. Apollo astronauts encounter an unexplainable phenomenon as they approach the Moon.
Season 4 FAQs
Episodes run about 45 mins. The total runtime is about 6h 0 mins.
You can watch Season 4 on Philo (Subscription), Discovery + (Subscription), Google Play Movies (Buy), and The Roku Channel (Ads). Check this Fanbiz page for the latest platforms.
Season 4 was released on 30 Aug 2016.
Season 4 has 5 seasons and 8 episodes on Fanbiz. Available seasons include Season 1, Season 2, Season 3, Season 5, and Season 6.