Many times, it is easy to trace a flight’s path in the sky, thanks to the wispy white lines that a plane leaves in its route, ...

Social media users were perplexed by unusual sighting in the viral video, with one saying "genuinely what is this." ...

The water vapor from the hot plane engine turns to ice mid-air which we see as white lines in the sky called contrails. This is the same phenomenon we see when we breathe hot air on a cold day.