Uploaded December 2025 | Updated September 2026, 2 weeks ago

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From giant O-stars to dim brown dwarfs, we rank every stellar class by how well they could host life, Dyson swarms, and advanced civilizations across cosmic time.

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Credits:
Which Stars Could We Live Around? Ranking Every Type of Star
Written, Produced & Narrated by: Isaac Arthur
Select imagery/video supplied by Getty Images

Chapters
0:00 Intro
3:05 How Stars Work: A Brief Guide
9:44 The Main Sequence Stars, A Through M
11:12 A-Type Stars
12:00 F-Type Stars
13:00 G-Type Stars
14:12 K-Type Stars
15:06 Nebula
16:06 M-Type Stars
17:55 Brown Dwarfs
19:15 Red Giants
22:00 Dead Stars
26:10 Wolf Rayet & Supergiants
29:23 Ranking the Stars