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Space's Deepest Secrets

Space's Deepest Secrets Season 5

Watch 'Space's Deepest Secrets' Season 5 Online

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Season 5 Episodes

1. Dark Origins of the Moon

October 15th, 201842 min

New discoveries reveal that everything known about the moon could be wrong; investigators race to understand the mysteries of its dark and violent past.

2. Mystery of the Alien Megastructure

October 22nd, 201842 min

A mysterious star hundreds of light years away might hold the hard evidence of extraterrestrial life, as experts speculate that its bizarre behavior points to proof of a massive alien-made megastructure.

3. Journey to Saturn's Rings

October 29th, 201842 min

New discoveries change everything known about Saturn's rings, revealing that they're newer and more mysterious than ever imagined, and that some day soon, they might disappear forever.

All Seasons

Season 8

Season 8

Mar 31, 2021
Season 7

Season 7

Sep 8, 2020
Season 6

Season 6

Mar 19, 2019
Season 5

Season 5

Oct 14, 2018
Season 4

Season 4

May 15, 2018
Season 3

Season 3

Aug 22, 2017
Season 2

Season 2

Apr 11, 2017
Season 1

Season 1

Apr 26, 2016