This enhanced infrared image from the Moderate ...

This is a photo of a persistent non-spreading ...

Photo of a persistent spreading contrail taken ...

Photo of a persistent spreading contrail taken ...

This is an image of a persistent spreading ...

Photo of a persistent spreading contrail taken ...

Photo of a persistent non-spreading contrail

Photo of many contrails in the sky near ...

Photo of many contrails in the sky near ...

This photograph shows many contrails in the sky ...

Photo of a short-lived contrail

Photo of three contrails – one is right after ...