This page contains information on the layer of the atmosphere called the mesosphere.  This is the layer after the stratosphere and before the thermosphere.  Below is a little animation of meteors hitting the earth!

      The extent of the mesosphere is from the stratopause to about 80 kilometers above the Earth's surface.  The temperature here though drops to about -100°C, which is much colder than the stratopause.  The upper region of the mesosphere is amazingly the coldest area of the entire atmosphere.

     Unlike in the picture above, meteoroids usually burn up in the mesosphere.   This is caused by the meteor rubbing against molecules in the mesosphere.  When the friction is great enough, they burn up.

      When the mesosphere reaches its maximum height,  the mesopause is found.  It is the boundary between the mesosphere and the cold yet hot thermosphere.