Haze, a slight clouding of the atmosphere caused by the suspension in the air of dust, soot, or other solid matter. Haze can also occur as a mixture of solid particles with tiny water droplets. A suspension consisting mostly or entirely of water droplets is a mist. A thick mist is a fog. Optical haze is caused by unevenly heated air that refracts light irregularly, causing distant objects to shimmer or waver.
Comets are remarkable pieces of our universe's past, and they tell us a great deal about how the universe was formed. Learn about the long but rewarding process of discovering and analyzing comets.
You've heard of the big bang, of course, but do you have any idea as to what was happening during that massive flurry of activity billions of years ago?