United Airlines Aircraft in Flight

A United Airlines Boeing 737 MAX (in the airline's current livery with 'EXPLORER' visible on the fuselage) flies above a smaller NASA research aircraft that is producing visible contrails. This image appears to document a sustainable aviation fuel (SAF) contrail research mission, in which NASA flew chase aircraft to analyze contrail formation from the United Airlines jet.

Notes

Photograph showing two aircraft in flight against a deep blue sky with contrails visible. The larger aircraft in the foreground is a United Airlines plane with distinctive blue and white livery, while a smaller aircraft is visible in the distance below.

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