⚙️ how
How do astronomers know when a star will explode as a supernova?
Quick Answer
They study the star’s mass, composition, and stage of evolution. Massive stars, especially those above about 8 solar masses, are likely to end in core-collapse supernovae.
The Full Story
A star’s fate depends mainly on its mass. Very massive stars fuse elements in layers until they build an iron core, which can no longer produce energy by fusion. When that core collapses, the star can explode as a supernova. Astronomers also watch certain stars for instability, but predicting the exact timing is difficult because the final stages can be brief and complex.
Key Facts
1.Stars above about 8 solar masses can become core-collapse supernovae
2.Iron fusion does not release energy
3.The exact timing of an explosion is hard to predict
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"When does a giant star run out of time?"
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