Season 6 Episodes11
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Ranked #8 of 9 in Season 6•−0.4 vs season avg
When a strange alien object is discovered speeding through our solar system, experts race to uncover if it's real evidence of extraterrestrial contact or a deadly asteroid on a collision course with planet earth.
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"Mystery of the Alien Asteroid" is episode 1 of Space's Deepest Secrets season 6. It scored 8.0/10 from 7 votes, ranking #8 of 9 episodes this season (season average 8.4). It aired on March 19, 2019.