The two are completely unrelated.
Airplanes are used for transportation within the earths atmosphere where as spaceships are for travel outside and eventually back into the earths atmosphere
There is no atmosphere on the moon. There is insufficient gravity to keep an atmosphere there.
Gravity pulled it in.
An aircraft flies in the Earths atmosphere, whereas a spaceship flies above the atmosphere.
The Earth's gravity.
Hydrogen and helium
Gravity.
Gravity is an entirely separate entity which is a consequence only of the mass of the earth itself. In fact, the atmosphere presses down because gravity is pulling on it.
Gravity. And the meteor is on a path that intersects the orbit of the Earth.
Oxygen in the atmosphere is O2, two atoms of oxygen. Ozone, no matter where it is in the atmosphere or in a process, is O3, three atoms of oxygen.
The earths gravity. The more mass a body has, the more gravity, The Earth has enough mass to hold an atmosphere. The Moon, on the other hand, is not massive enough, and so does not have a high enough gravity, which prevents it from holding an atmosphere.
Outside earths atmosphere its Gravity, and on Earth its Mass and Velocity.