when the rocks {from outer space } come to earth why is it in fire and how does it create it

Question: when the rocks {from outer space } come to earth why is it in fire and how does it create it
- Keywords:
  earth,
  fire,
  meteorite,
  space
Asked by ammu to Pip, Reka on 18 Nov 2016.
- Reka Nagy answered on 18 Nov 2016:
  
  As asteroids enter Earth’s atmosphere, they encounter friction (because there are a lot more atoms in the atmosphere than there are in space).
  
  Because they travel at such high speeds, they experience a lot of resistance in the atmosphere so they start heating up, which is what causes them to catch fire!

ammu commented on 19 Nov 2016:

thankyou Reka can we live in mars withut helmet

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Question: when the rocks {from outer space } come to earth why is it in fire and how does it create it