Blue supergiant stars live relatively short lives — typically 10 to 100 million years, depending on their mass.
Why so short?
Blue supergiants are extremely massive (often 10 to 50+ times the mass of the Sun) and very hot, burning through their nuclear fuel much faster than smaller stars like the Sun.
| Star Type | Mass (approx.) | Lifespan |
|---|---|---|
| Sun-like star | 1 solar mass | ~10 billion years |
| Blue supergiant | 10–50+ solar masses | ~10–50 million years |
| Red dwarf (tiny) | 0.1–0.5 solar masses | Up to 100+ billion years |
🌟 What happens after?
Blue supergiants typically end their lives in supernova explosions, often leading to:
-
A neutron star if they’re on the lighter side
-
A black hole if they’re more massive
Some famous blue supergiants, like Rigel in Orion, are in the final stages of their life and may explode within a few million years.