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Because on Mars it is too cold so any water on the surface is frozen, while on Venus its too hot.
What else can I help you with?
Did Venus once have running water?
There is no known evidence of liquid water every having existed on Venus, but it is quite possible that surface conditions were once very different from what they are now. Note that the surface of Venus has not been studied as extensivley as the surface of Mars.
Which inner planet once had water on it?
The Rover mission confirmed that Mars once had liquid water on its surface.
What does earth have that mars and Venus doesnt?
Earth has abundant liquid water on its surface, a protective magnetic field, and a thick atmosphere that creates stable temperatures suitable for life. Mars lacks a significant atmosphere and water in liquid form, while Venus has a thick toxic atmosphere with extremely high temperatures.
Which planet is too hot for liquid to exist?
Mars is a planet that is too cold for liquid water to exist on its surface. Almost the entire surface of Mars is covered in ice.
If you were looking at Venus and Mars through a telescope which surface would be easier to see?
Mars
How much of Mars has water?
Mars has no liquid surface water.
Why do Venus and Mars lack a hydrosphere with liquid water?
Venus lacks a hydrosphere with liquid water because it experienced a runaway greenhouse effect that caused its surface temperature to rise too high for liquid water to exist. Mars likely lost much of its early atmosphere, leading to a decrease in atmospheric pressure that caused any surface water to either freeze or evaporate.
What is the sea surface area of Mars?
Although areas of Mars have the name "mare" (sea), there is no liquid water on the surface of Mars.
How big is Venus's compared to mars?
Venus is slightly smaller than Earth, with a diameter of about 12,104 kilometers, while Mars is smaller than both Venus and Earth, with a diameter of about 6,779 kilometers. So, Venus is significantly larger than Mars.
Why can astronomers see the surface of mars clearly not the surface of Venus?
Surface materialsbasaltic rock and altered materials
What planets have a rocky surface?
In this solar system there are four, Mercury, Venus, Earth, and Mars.
Does Mars and Venus have water?
Venus: Not much at all. Mars : Quite a bit in the form of ice, near the poles. Also probably some under the surface.
