if( aicp_can_see_ads() ) { $adCode = '
'; return $adCode; } else { return '
'; }

Why the sky ISN’T blue

On a clear sunny day, the sky above us looks bright blue. In the evening, the sunset puts on a brilliant show of reds, pinks and oranges. Why is the sky blue? What makes the sunset red? To answer these questions, we must learn about light, and the Earth’s atmosphere.


Like it? Share it!