The only real limit for jet airplanes is the amount of air available for the engines to maintain compression, combustion, and thrust. Once the air becomes too thin, the aircraft can't go any higher under its own power.
To be an airplane with jet engines? All jet airplanes leave contrails.
Yes.
they fly
Gravity.
Air
The jet stream regularly affects high altitude wind and low altitude weather.
five jet
36,000 feet
From 28,000 to 33,000 feet.
you mean jet streams...or thermals?
jet streams
The cruising altitude of a normal commercial jet airplane today is around 12,000 m (35,000 ft).