I grabbed this yesterday while it was still very much daylight.if you notice to the right I captured something else. I recently read that there are so many objects from old space craft that reflect light of the sun and if one stays watching several hundred can be seen with the eye only.the jet flying toward the right is a Southwest airlines The condensation trail left behind jet aircraft are called contrails. Contrails form when hot humid air from jet exhaust mixes with environmental air of low vapor pressure and low temperature. The mixing is a result of turbulence generated by the engine exhaust.it also forms at the tips of jet wings from compressing the air I appreciate very much your visit and if you have time for a comment then even better