A mountain is something that is higher than the rest of the land.
You can't be "higher than the rest of the land" unless there is lower land to be higher than.
If there were no space between mountains, then all land would be at the altitude of the top of the mountains, and it would all be flat, and there would be no mountains.
its space.
if it is a small distance between both mountains it is a valley . if it is a great distance between the mountains it is called a plain---------------- the space that lies along a line between the peak of two mountains that are very close to each other is called a saddle.
There are mountains on planets in space, and there are mountain sized asteroids, but there are no singular mountains floating in space that we know of.
A valley or crater ---------------------------------------------------------------------- If the mountains are close together, close enough to blend into each other, the space between them is called a saddle. ....or maybe you're looking for the word "cleavage"
The space is called a vally-------------------------------------------------------------------------------------------Actually it depends on what you mean by "between" . the actually space that lies between two mountain tops is called a saddle. Thinking of a valley as the intersection where the two sides of two mountains merge is a bit of stretch but could be true. In that case, the valley originates at the saddle which often forms a valley on opposite sides.
There are mountains on planets in space but there is no number on how many.
NO!
Yes. The space probe New Horizons found mountains on Pluto that are as tall as the Rocky Mountains on Earth.
The mountains that are between the black sea and the Caspian sea is the caucasus The Caucasus Mountains
It depends on which valley you're talking about, but most were created by erosion. Either that or they're the space between two hills/mountains.
Between hills and mountains valleys are to be found.
The opening between mountains iscalled a gap.