Multiple choice

The core of a red supergiant star consists of:

  1. Iron

  2. Hydrogen

  3. Carbon

  4. Helium

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

As a star evolves, it fuses increasingly heavy elements. In a red supergiant, the fusion process eventually creates iron in the core, which cannot be fused further to release energy, leading to a core collapse.