What is the earths core made of – I'm a Scientist 25/26

Question: What is the earths core made of
- Keywords:
  core,
  Earth,
  planet
Asked by husk532echt85 to jonathanmound, Charles D on 16 Mar 2026. This question was also asked by ummayyah.
- Jonathan Mound answered on 16 Mar 2026:
  
  Mostly iron (about 85%) and nickel (about 5%). The remaining 10% is a mixture of other elements (oxygen, carbon, sulphur, silicon, hydrogen, etc) but we aren’t entirely sure which ones and how much of each.

Question: What is the earths core made of