Flying machine without using the air-polluting fuel is not a matter to be laughed at.
I agree, we need science to develop one.
If we remove the alphabet “t” from the word PLANET, we have the word PLANE
If we remove the "e" we have plant! So what?
You and the entire humanity are aboard on this PLANE called earth, and it is flying at a speed of 30 km per second, i.e., 1,08,000 km per hour! [At this speed, the distance to the moon can be covered in just four hours]
Earth is not a plane. It's falling, actually, not flying. Everything you wrote is factually and demonstrably wrong.