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- S1.E1 ∙ Black holes: the other side of infinity
- S1.E2 ∙ Dynamic earth
- S1.E3 ∙ Supervolcanoes
- S1.E4 ∙ Oasis in space
- S1.E5 ∙ Death of a star
- S1.E6 ∙ Undiscovered worlds
- S1.E7 ∙ Mysterious birth of the moon
- S1.E8 ∙ Search for the edge of the universe
