If there is no gravitational field around the Earth, air molecules would not stick around the surface of the Earth, and they'll be in random motion through the entire space.
Earth: Space: - is a planet - No gravity - supports life - Vaccum - gravity - No gravity or atmosphere - atmosphere
Gravity causes the atmosphere to stay here on Earth, where there is a huge demand for it.
The gravity can't be responsible for drifting away of footprints. Its the absence of the atmosphere which is really responsible. Due to its absence, no factor such as wind or something can drift away the footprints
The Earth's gravity.
The Moon has almost no atmosphere, so that is unable to influence lunar gravity - which is about one sixth of Earth's gravity.
There is no atmosphere on the moon. There is insufficient gravity to keep an atmosphere there.
It is essential: no gravity - no atmosphere.
There certainly is gravity outside the atmosphere. For example, it is gravity that keeps the Moon in orbit around the Earth, and the Earth in orbit around the Sun.
gravity and temperature; It needs gravity so it can hold its atmosphere.
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.
The force of gravity binds the hydrosphere and lower atmosphere to earth.
The atmosphere we breath is held round the earth's surface due to earth's gravity. Without this gravity, earth's atmosphere would disperse into space. Because our moon's gravity is weak, so there is no atmosphere on the moon.