Mysterious Satellite Captured on Camera: The UnXplained (Season 3)

While constructing the international space station, astronauts capture a strange object on camera, which raises suspicions around the world. See more in this clip from Season 3, "The Search For Extraterrestrial Life."

Watch all new episodes of The UnXplained, streaming now, on The HISTORY Channel website at http://history.com/schedule.

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From the producers of Ancient Aliens and The Curse of Oak Island comes The UnXplained, a one-hour, non-fiction series that explores the world’s most fascinating, strange and inexplicable mysteries. Hosted and executive produced by Golden Globe and Emmy Award-winning actor William Shatner (Star Trek, Boston Legal) each episode will feature compelling contributions from scientists, historians, witnesses and experiencers—each seeking to shed light on how the seemingly impossible actually can happen.

HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network’s all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.