Why does Earth have a liquid water supply and the moon does not?

Answer 1

It has an atmosphere because if it didn't, all living things could die from the sun rays. Technically, the atmosphere is like a shield to a knight, it protects the knight from arrows, like the atmosphere protects the earth from deadly sun rays.

Actually the earth's atmosphere was kinda made on accident. It started because Volcanoes, and Comets blew/hit and released gases which reacted with eachother. Therefore causing the atmosphere

Answer 2

The Moon does not have enough gravity to form a thick atmosphere. Intense sunlight reaches and heats the surface. Liquid water would be ionized and escape back into space as hydrogen and oxygen ions.

The water on the Moon is in the form of ice in deep crater shadows. Sunlight cannot reach this ice to melt and vaporize it.

Answer 3

Earth has more mass, and therefore, more gravity. The Moon doesn't have enough gravity to hold a significant atmosphere for any significant amount of time.
The Earth is more massive, and so has more gravitational force to hold gasses.

Answer 4

Atmospheres on planets are a result of when a planet has a strong enough gravitational pull to be able to gather and contain smaller and lighter atoms (such as Hydrogen and Helium) towards the planet without them floating away. A big factor as to why the Earth was able to develop and maintain an atmosphere, is because of the distance between the Earth and the Sun.

The Earth was able to do this but it was so hot from the sun heating it up that most of the Hydrogen and Helium in its atmosphere floated away, but since the Earth had geographical land formations such as volcanoes, which released gases such as CO2, Ammonia, and Steam into the Earth's Atmosphere (which being heavier than Hydrogen and Helium they didn't float away) this allowed the Earth to develop a new atmosphere, composed of H2O, CO2, and Nitrogen. Under these conditions plants were able to develop and flourish by photosynthesizing due to having access to Sunlight, CO2, and H2O.

This resulted in the Earth having Oxygen within it's atmosphere and having the ability to harbor new organisms that require Oxygen to live such as animals.

Answer 5

The Moon is smaller than Earth, and its gravity is quite a bit weaker. As a result, most gas molecules escape to space. (On Earth, the escape velocity is 11.2 km/second; on the Moon, the escape velocity is 2.38 km/second.)

Answer 6

Earth's liquid water supply is maintained due to its stronger gravity, which allows it to retain an atmosphere that traps heat and prevents water from freezing or evaporating away. The moon's weaker gravity and lack of atmosphere mean that any water present would either evaporate into space or freeze on its surface.

Answer 7

Probably a mixture of volcanic eruptions and then plants starting to grow and then other animals soon after.

Answer 8

The popular conjecture is that it does not; however, some scientists have expressed that it may be possible.