Season 9 Episodes11
Cast1

Mike Rowe
Narrator
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Ranked #5 of 11 in Season 9•matches the season avg
Experts embark on a ground-breaking mission to land on a comet.

Mike Rowe
Narrator
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"Mission to a Comet" is episode 2 of How the Universe Works season 9. It scored 8.5/10 from 63 votes, ranking #5 of 11 episodes this season (season average 8.5). It aired on March 31, 2021.