why is the sky blue? – Gallium Zone

Question: why is the sky blue?
- Keywords:
  blue,
  colour,
  sky
Asked by jemmaa to Asif, Laura, Lena, Sean, Viv on 15 Mar 2012.
- Laura Waters answered on 14 Mar 2012:
  
  Because light gets scattered all over and it makes our eyes think it looks blue.
- Sean Murphy answered on 15 Mar 2012:
  
  Sunlight reaches Earth’s atmosphere and is scattered in all directions by all the gases and particles in the air. Blue light is scattered in all directions by the tiny molecules of air in Earth’s atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.

Question: why is the sky blue?