An Interesting query...think about it?

I'm not a physicist, so I'm just shooting from the hip, but I would think that the hemisphere-topped-by-cone shape occurs in the Earth's atmosphere largely due to wind resistance the droplet encounters as it falls. I don't remember off-hand if the moon has some minimal atmospheric layer or none at all. I would expect a falling water droplet (excluding the effect of a slower rate of fall and the possibility of freezing or evaporation) to ume the same shape to the extent that an atmosphere is present. If there is no atmosphere at all I would expect a water droplet to ume a spherical shape.