Shadow in the sky

The sky can add drama and interest to a photo. Or the sky can be the subject of the photo, as in this picture I took last month.

The contrail, or condensation trail, from a jet is casting a shadow on the clouds in the background. Here's a vertical version:



I always try to keep an eye on the sky, especially in the early morning or at twilight. I saw the contrail and shadow while on my way to a convenience store to get milk.