While the average temperature of the planet is estimated to be around -64 degrees Fahrenheit (-53 degrees Celcius), it could still maintain liquid water
on its surface like Earth owing to its thick atmosphere.
If the planet has a dense atmosphere, which will take future studies to determine, it could trap enough heat to warm the planet and allow liquid water
on its surface."
It can trap heat, and make the surface warm enough for liquid water
to exist on the surface, allowing for the cultivation of crops.
According to researchers, including lead author Edward Schwieterman of (https://www.ibtimes.com/nasa-asteroid-tracker-180-foot-neo-get-incredibly-close-earth-today-2799905) NASA , most planets that are located near the edge of these zones require high levels of carbon dioxide to maintain liquid water
and above-freezing temperatures.
A study published last year in the journal Science suggested liquid water
is present beneath the south polar ice cap of Mars.
The predicted temperature at the base of the southern polar layered deposits is -68[degrees]C (-90[degrees]F), and pure liquid water
can't exist at such low temperatures.
It is the first time a large stable body of liquid water
has been confirmed to exist on Mars.
US astrobiologist Professor Kirk Schulze-Makuch, from Washington State University, said: "If liquid water
and a significant atmosphere were present on the early moon for long periods of time, we think the lunar surface would have been at least transiently habitable."
Until the 1990's, it was claimed that there is no liquid water
except on Earth.
At the same time, the liquid water
movement process is affected by not only aerodynamic force and gravity but also the centrifugal force, eventually leading to the variation of ice shape.
Many problems of practical and scientific interest involve equilibrium between a gas phase and a condensed phase that is either nearly pure liquid water
or pure ice.