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The Oort Cloud: The Solar System's Shell

April 5, 2026 · 24 min

Show notes

What lies at the edge of the Solar System? Far beyond the orbit of Neptune and the Kuiper Belt, deep into interstellar space, we find a vast, thick shell of icy space debris. We have never seen it directly, but we know it exists- because it is the source of the most distant comets that we see entering the Solar System. So why is it there? Today we'll find out.


All background songs in this video were sourced from the royalty and attribution-free YouTube Audio Library.


CHAPTERS:

00:00: Introduction

02:01: The Oort Cloud

05:18: The Scale of the Cloud

06:47: Formation of the Oort Cloud

09:33: The Source of All Comets

13:17: The Hills Cloud

14:40: Sedna

16:12: The Outer Oort Cloud

17:13: Siding Spring, Hale Bopp, Lovejoy

19:20: Future Missions to the Oort Cloud

21:46: Extra-solar Oort Clouds

All episodes of SEA: Space Exploration & Astronomy

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