what could destroy the earth besides the sun.

Question: what could destroy the earth besides the sun.
- Keywords:
  end of the world
Asked by joshuabellotryan to Claire, Renata, Suzanne on 27 Jun 2013.
- Suzanne Harvey answered on 27 Jun 2013:
  
  I think the most likely would be humans! Nuclear weapons could destroy the earth. Another possibility would be a huge meteor, but let’s hope these things don’t happen any time soon…

Question: what could destroy the earth besides the sun.