The plane had left the extra particles and the residual vapor remaining.
NASA’s satellite, Terra, managed to capture aerial imagery that shows traces of the planes that fly across the Atlantic Ocean. Trace of the aircraft trajectory is seen to spread across the sky off the coast of Newfoundland, Canada.
Citing page Daily Mail, trace the shape is created after the planes left the extra particles and residual vapors left over from the plane’s flight.
NASA calls this trail can last up to 14 hours. At the latest, according to NASA calculations, reaching four to six hours.