Threats to Interplanetary & Interstellar Civilizations

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Natural disasters can topple civilizations, even in modern times, but with more and more technology civilizations become more robust and capable of predicting future calamities and preventing such ruin. So what other threats face spacefaring civilizations, both at the interplanetary and interstellar scale?

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Credits:
Threats to Interplanetary & Interstellar Civilizations
Episode 197, Season 5 E32

Written by:
Isaac Arthur

Editors:
Darius Said
Jerry Guern
Keith Blockus
Stuart Graham
Matt Campbell

Cover Art:
Jakub Grygier

Graphics by:
Bryan Versteeg
Fishy Tree
Jarred Eagley
Jeremy Jozwik
Ken York
Sergio Botero

Produced & Narrated by:
Isaac Arthur

Music Manager:
Luca DeRosa

Music:
Paradox Interactive, "The Titan"
Kai Engel, "Endless Story About Sun and Moon"
Lombus, "Hydrogen Sonata"
Aerium, "Waters of Atlantis"
Stellardrone, "Crystal Spheres"
Marcus Warner, "The First Few Waves"
Epic Mountain, "Space Travel"