Season 8 Episodes7
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Ranked #4 of 7 in Season 8•matches the season avg
Astronomers finally unlock the mysteries of Uranus and Neptune.
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"The Giant Ice Planets" is episode 5 of Space's Deepest Secrets season 8. It scored 8.0/10 from 8 votes, ranking #4 of 7 episodes this season (season average 8.0). It aired on April 28, 2021.