These white lines are contrails, formed when water vapour from aircraft ... trails in the blue sky are ice or water vapour, not poisons or geoengineering materials, as the chemtrails conspiracy claims ...

These wispy man-made clouds have fascinated ... looping ribbons of white". "[N]ever before had I seen a plane writing in white upon the blue slate of sky," he added. During the Second World ...

If you’ve ever wondered why airplanes are painted white, there are five key reasons — and not one of them has to do with ...

Look up at a clear blue sky ... aircraft are seen producing vapour trails while others do not. High humidity means that vapour trails can last for long periods and become thin layers of cirrus ...

We’ve all seen those white ... blue sky. The lines are called contrails, short for condensation trails, and they appear when water vapor condenses and freezes around the exhaust from an aircraft ...

Avionics: Blue Sky Network published a white paper on ICAO’s initiative to improve global aircraft flight tracking, a move toward building the Global Aeronautical Distress and Safety System ...

With so many of us stuck at home, more people than ever are looking up during the day and wondering why there are so many skinny white clouds ... type patterns in the sky prior to about 2006.

As adults, there is something calming and comforting about those fluffy tufts of white drifting slowly past. Clouds are beautiful ... tiny particles of soot from aircraft exhausts.