I have suggested that a 'lighter than air' balloon, released on the moon, would rapidly rise upwards. I also suggested that perhaps a balloon filled with normal atmospheric gases might behave the same way on the moon, because 'the orbital energy level of such gases lie somewhere below the surface of the moon.' Apparently the orbital energy level of such gases lies right on the surface of the moon, which is an indication of just how 'unstretched' the gradient of the gravitational energy field is on the moon as compared to that of the earth, where atmospheric gases are found in thin quantities up to a couple of hundred miles above the surface of the earth.

Planetary Scientists Use Hubble to Spot Oxygen-Rich Soil on Moon