Jet airplanes use turbine engine propulsion which provides a far greater amount of thrust than any conventional propeller or turbo-propeller system. This has allowed many modern aircraft to reach speeds greater than the speed of sound or "supersonic" speeds.
To be an airplane with jet engines? All jet airplanes leave contrails.
Yes.
Gravity.
they fly
Air
five jet
Efficiency. A jet engine works best in thin air.
fluorecent orange
No
With an engine--either prop or jet.
No. Airplanes are faster.
the stratosphere